Prof. Dr. Daniel Keller, eMBA
Katharina Wildfeuer
Daniel Keller is the founder of Keller Partner in Bonn. He combines academic knowledge with over ten years of practical experience as a management consultant and trainer in various industries and countries. He has worked in and with DAX-listed companies, family-owned and run SMEs, NGOs, dot-com start-ups and the Catholic church. He has thus acquired a wealth of experience in many different consulting and cultural contexts: automotive, insurance, production, trade, app development as well as the health and social sectors in Germany, Italy, China, Dubai, Singapore, India and the USA.
He has worked as a Management Consultant and Leadership Trainer at the Malik Management Zentrum in St. Gallen, Switzerland under Prof. Dr. Fredmund Malik, at Capgemini Strategy Consultants as well as at a successful dot-com start-up, ip.labs GmbH.
Daniel studied at the University of Bonn and continued at the Papal University, Gregoriana, in Rome. He graduated in Catholic Theology and Philosophy summa cum laude, completing his Doctorate on The Greatest Good in Immanuel Kant. He has completed his academic education to date with an Executive Master of Business Administration (eMBA) in Accounting and Controlling from the Faculty of Business Administration at the University of Münster, Germany.
As Professor of General Management and Leadership at the Steinbeis University in Berlin he focuses on the connection of application-based research, having recourse to different academic disciplines at the Steinbeis University Berlin. Here he considers the question: What do all organisations need in order to survive in the long-term?
Katharina Wildfeuer works as an Executive Assistant at Keller Partner in Bonn. Her duties include establishing Keller Partners’ e-learning and mobile learning systems as well as knowledge management, content marketing and social media marketing.
After completing her first degree in Economics from the Rheinische Friedrich-Wilhelms University in Bonn she joined an up-and-coming start-up company in the advertising industry to work as a content manager.
While studying for her international Masters in Economics at the same university, graduating in October 2018, she began working for a renowned major media company, monitoring its various social media channels. Last but not least, Katharina also has market research experience which she gained working in a market research institute.
Nicholas Neis-Forster
Petra Sieber
As Project Management Officer at Keller Partner, Nicholas Neis-Forster is responsible for the coordination, conception and monitoring of training and development measures. In doing so, he works closely with the trainers and continues to provide support on important corporate development issues.
Nicholas has a degree in psychology with a focus on work, organisational and business psychology. He also holds a Bachelor’s degree in German-French Studies.
During his studies, Nicholas already worked as a student trainee at Keller Partner. Before joining Keller Partner again, he worked for 1.5 years in management consulting with a focus on pricing.
Petra Sieber is Head of Administration at Keller Partner in Bonn. She is responsible for the digital coordination and administration processes and is an important link to the client.
After studying business administration, she worked for two different management consultancies in Frankfurt, where she gained relevant experience as an executive assistant.
She then moved to the ADG Business School at Steinbeis University in Montabaur and worked for more than eight years as head of study organisation and administration as well as office management.
Before joining Keller Partner, she spent two years as head of administration at one of Europe’s leading producers of large-format advertising materials.
Daniel Keller is the founder of Keller Partner in Bonn. He combines academic knowledge with over ten years of practical experience as a management consultant and trainer in various industries and countries. He has worked in and with DAX-listed companies, family-owned and run SMEs, NGOs, dot-com start-ups and the Catholic church. He has thus acquired a wealth of experience in many different consulting and cultural contexts: automotive, insurance, production, trade, app development as well as the health and social sectors in Germany, Italy, China, Dubai, Singapore, India and the USA.
He has worked as a Management Consultant and Leadership Trainer at the Malik Management Zentrum in St. Gallen, Switzerland under Prof. Dr. Fredmund Malik, at Capgemini Strategy Consultants as well as at a successful dot-com start-up, ip.labs GmbH.
Daniel studied at the University of Bonn and continued at the Papal University, Gregoriana, in Rome. He graduated in Catholic Theology and Philosophy summa cum laude, completing his Doctorate on The Greatest Good in Immanuel Kant. He has completed his academic education to date with an Executive Master of Business Administration (eMBA) in Accounting and Controlling from the Faculty of Business Administration at the University of Münster, Germany.
As Professor of General Management and Leadership at the Steinbeis University in Berlin he focuses on the connection of application-based research, having recourse to different academic disciplines at the Steinbeis University Berlin. Here he considers the question: What do all organisations need in order to survive in the long-term?
Katharina Wildfeuer works as an Executive Assistant at Keller Partner in Bonn. Her duties include establishing Keller Partners’ e-learning and mobile learning systems as well as knowledge management, content marketing and social media marketing.
After completing her first degree in Economics from the Rheinische Friedrich-Wilhelms University in Bonn she joined an up-and-coming start-up company in the advertising industry to work as a content manager.
While studying for her international Masters in Economics at the same university, graduating in October 2018, she began working for a renowned major media company, monitoring its various social media channels. Last but not least, Katharina also has market research experience which she gained working in a market research institute.
As Project Management Officer at Keller Partner, Nicholas Neis-Forster is responsible for the coordination, conception and monitoring of training and development measures. In doing so, he works closely with the trainers and continues to provide support on important corporate development issues.
Nicholas has a degree in psychology with a focus on work, organisational and business psychology. He also holds a Bachelor’s degree in German-French Studies.
During his studies, Nicholas already worked as a student trainee at Keller Partner. Before joining Keller Partner again, he worked for 1.5 years in management consulting with a focus on pricing.
Petra Sieber is Head of Administration at Keller Partner in Bonn. She is responsible for the digital coordination and administration processes and is an important link to the client.
After studying business administration, she worked for two different management consultancies in Frankfurt, where she gained relevant experience as an executive assistant.
She then moved to the ADG Business School at Steinbeis University in Montabaur and worked for more than eight years as head of study organisation and administration as well as office management.
Before joining Keller Partner, she spent two years as head of administration at one of Europe’s leading producers of large-format advertising materials.
Corinna Alpers
Prof. Dr. Pamela Luckau
Corinna Alpers is a team assistant at Keller Partner. She is the one pulling all the strings together. Calls come in to her central phone number, she takes care of the daily back office tasks and supports the team as well as the network partners of KellerPartner GmbH with her work.
She completed her training and subsequent traineeships with distinction in the upscale Cologne hotel industry. In the following years, she gained further professional experience as an editorial and event assistant at internationally active television production companies. She returned to Bonn, to work there as an event manager for a large company and foundation. Before being part of Keller Partner, she worked in the catering and events department of the UN Campus in Bonn.
Pamela Luckau is an energetic and committed entrepreneur who works for Keller Partner as a behavioural trainer, coach, facilitator, speaker and professor of communication and coaching at the SRH – The Mobile University in Riedlingen. As a certified communication and behavioural trainer, she has been working for clients from academia, the corporate world and politics for almost 20 years. Her speciality is the focus on best behaviour and the question of how exactly this behaviour can succeed via a vis ourselves, employees or relatives in challenging life situations. She works in house with groups and individuals in Germany and other European countries in German and English and advises clients at Keller Partner on the design of learning and development paths. As a professor at Germany’s only distance learning university of applied science, she is an expert in virtually designed learning and development processes.
With a scholarship for gifted students from the Adenauer Foundation and a doctoral scholarship from the German Research Foundation, her academic journey in the political sciences took her from the Free and Humboldt Universities of Berlin to the Université Libre de Bruxelles and ETH Zurich. She has been a part-time professor at SRH – The Mobile University since 2017, combining her high level of practical expertise with training students in the field of communication and behaviour.
Clients agree that her energy is infectious and the fast pace is just right in phases where there is less discussion and action is allowed to take centre stage – it is serious, but never dry and boring.
In addition to practical experience in international organisations and the German Bundestag, she has a broad psychological background, is certified as a communication and behavioural trainer (artop Institute Berlin) and is licensed as an NLP trainer in the USA with the co-founder of Neurolinguistic Programming, Richard Bandler.
In 2007, she was one of the youngest contestants in the history of Toastmasters International to win the English language speaking competition in the Evaluation Speech category. Her particular strength as a trainer, coach and speaker is the analytical penetration of issues, coupled with outstanding language skills and her talent as a performer: this is how communication and behavioural issues come to life and enable her coachees, participants and attendees to make rapid changes that are sustainable
Alexander Noß, LL.B.
Katja Kranz
Alexander Noß is a lawyer and trainer with expertise in commercial criminal law in the fields of compliance and corporate governance as well as in general behavioural and ethics training. His law degree (Bucerius Law School, Hamburg and Emory University School of Law, Atlanta, GA, USA) was supported by, among others, the Konrad-Adenauer Foundation.
He has completed various continuous and professional training programmes in the psychology of communication, systemics and applied communication (including at the Schulz-von-Thun Institute, Kauke up, ZHI), which complete his range of tools and skills at the interface between the law and behavioural science .
A passionate commercial criminal lawyer he has worked in law firms as well as in companies ranging from start-ups to DAX-listed corporations; as a trainer he is fascinated by opportunities to enhance self-effectiveness; both worlds share a special way of handling communication and language.
In his Doctorate he looks at the question of how greater employee satisfaction can be combined with compliance to prevent corporate crime.
Katja Kranz is Manager Sales & Marketing at Keller Partner. Her responsibilities include internal and external communication, the presentation and distribution of services and products as well as the support and optimisation of social media channels and the website.
Katja studied International Business Studies in Dresden and Arnhem (NL), where she already focused on marketing. Her CV has not only taken her to New York and the Netherlands, but also to various stations within Germany.
Among other things, she worked for many years as a Programme Manager and later as Head of Consulting & Sales at the ADG Business School at Steinbeis University.
Corinna Alpers is a team assistant at Keller Partner. She is the one pulling all the strings together. Calls come in to her central phone number, she takes care of the daily back office tasks and supports the team as well as the network partners of KellerPartner GmbH with her work.
She completed her training and subsequent traineeships with distinction in the upscale Cologne hotel industry. In the following years, she gained further professional experience as an editorial and event assistant at internationally active television production companies. She returned to Bonn, to work there as an event manager for a large company and foundation. Before being part of Keller Partner, she worked in the catering and events department of the UN Campus in Bonn.
Pamela Luckau is an energetic and committed entrepreneur who works for Keller Partner as a behavioural trainer, coach, facilitator, speaker and professor of communication and coaching at the SRH – The Mobile University in Riedlingen. As a certified communication and behavioural trainer, she has been working for clients from academia, the corporate world and politics for almost 20 years. Her speciality is the focus on best behaviour and the question of how exactly this behaviour can succeed via a vis ourselves, employees or relatives in challenging life situations. She works in house with groups and individuals in Germany and other European countries in German and English and advises clients at Keller Partner on the design of learning and development paths. As a professor at Germany’s only distance learning university of applied science, she is an expert in virtually designed learning and development processes.
With a scholarship for gifted students from the Adenauer Foundation and a doctoral scholarship from the German Research Foundation, her academic journey in the political sciences took her from the Free and Humboldt Universities of Berlin to the Université Libre de Bruxelles and ETH Zurich. She has been a part-time professor at SRH – The Mobile University since 2017, combining her high level of practical expertise with training students in the field of communication and behaviour.
Clients agree that her energy is infectious and the fast pace is just right in phases where there is less discussion and action is allowed to take centre stage – it is serious, but never dry and boring.
In addition to practical experience in international organisations and the German Bundestag, she has a broad psychological background, is certified as a communication and behavioural trainer (artop Institute Berlin) and is licensed as an NLP trainer in the USA with the co-founder of Neurolinguistic Programming, Richard Bandler.
In 2007, she was one of the youngest contestants in the history of Toastmasters International to win the English language speaking competition in the Evaluation Speech category. Her particular strength as a trainer, coach and speaker is the analytical penetration of issues, coupled with outstanding language skills and her talent as a performer: this is how communication and behavioural issues come to life and enable her coachees, participants and attendees to make rapid changes that are sustainable
Alexander Noß is a lawyer and trainer with expertise in commercial criminal law in the fields of compliance and corporate governance as well as in general behavioural and ethics training. His law degree (Bucerius Law School, Hamburg and Emory University School of Law, Atlanta, GA, USA) was supported by, among others, the Konrad-Adenauer Foundation.
He has completed various continuous and professional training programmes in the psychology of communication, systemics and applied communication (including at the Schulz-von-Thun Institute, Kauke up, ZHI), which complete his range of tools and skills at the interface between the law and behavioural science .
A passionate commercial criminal lawyer he has worked in law firms as well as in companies ranging from start-ups to DAX-listed corporations; as a trainer he is fascinated by opportunities to enhance self-effectiveness; both worlds share a special way of handling communication and language.
In his Doctorate he looks at the question of how greater employee satisfaction can be combined with compliance to prevent corporate crime.
Katja Kranz is Manager Sales & Marketing at Keller Partner. Her responsibilities include internal and external communication, the presentation and distribution of services and products as well as the support and optimisation of social media channels and the website.
Katja studied International Business Studies in Dresden and Arnhem (NL), where she already focused on marketing. Her CV has not only taken her to New York and the Netherlands, but also to various stations within Germany.
Among other things, she worked for many years as a Programme Manager and later as Head of Consulting & Sales at the ADG Business School at Steinbeis University.
Dr. Sandra Dentler
Dario Cameretti
Sandra Dentler is a content producer at Keller Partner in Bonn. Her responsibilities include the active supervision and further development of projects in the field of knowledge management and content marketing as well as conceptual and operational collaboration on client projects.
Sandra studied Modern and Contemporary History, Medieval History and Political Science at the Ludwig Maximilian University of Munich and the University of Dundee (Scotland).
After her studies, she worked for several years as a scientific-pedagogical assistant at the Bonn Memorial and as a consultant at the Dachau Concentration Camp Memorial. At the same time, she completed her doctorate on the topic of “‘Volksgemeinschaft’ in Bonn”.
In addition to numerous further training courses within the framework of the Graduate Center of the LMU on the topic of self-management, communication and leadership, she completed a six-month further training course in project management at the IU Academy.
Dario Cameretti has been providing strategic top management consulting since 2006. The issues with which he concerns himself encompass the full range of complex challenges that face management – both strategic and organisational aspects and issues surrounding operative and culture-specific procedures.
His expertise in systemically integrated corporate transformation enables his clients to implement effective, long-term working solutions together. Thus Dario Cameretti sees himself as a generalist who, if necessary, can deep dive into details with the client.
His knowledge of methods is based on his studies of chemical engineering at the Technical University of Dortmund as well as his 5-year stint at an international manufacturer of construction materials.
Moreover, his 10 years spent working with Prof. Dr Fredmund Malik at the Malik Management Centre in St. Gallen, latterly as an Associate Partner, took him to countless leading international companies and successful family-owned and run SMEs in industries ranging from agriculture, automotive, construction, chemicals, financial services, health, consumer goods, logistics, aerospace and machine and systems and plant construction.
Alongside his work as a management consultant he is constantly sought after as an instructor and tutor on international MBA programmes. He is a sparring partner for C-level managers and supports start-ups in developing their business models.
Dario Cameretti is the founder of cameretti management consulting in Wiesbaden and a network partner of Keller Partner.
Daniel Dunkhase
Dr. Johannes Flecker
Daniel Dunkhase is a network partner of Keller Partner in Bonn. His services include designing and implementing international programmes for leadership performance, coaching top management teams, acting as a sparring partner for senior executives and managing directors as well as providing support during effective implementation of corporate strategy. In more than 15 years he has advised around 5000 executives (at all levels), predominantly in senior and top management. He has gained vast international experience by leading and implementing global training and consulting projects with project work in Europe, Asia, USA and Australia.
Significant projects include, for example, providing strategic support and coaching on leadership and change management for 250 top executives of a global manufacturing company , running training and coaching programs for the senior executives of a global trade organization, accompanying and supporting the restructuring and coaching of a top management team in the Asia/Pacific region, helping them to become a high performance team.
Alongside his practical experience in different industries, Daniel has systematically developed his knowledge and expertise by working for leading international consultancies (including Malik Management and Kienbaum Consultants International) and by means of continuous further training and professional development.
Dr. Johannes Flecker is a networkpartner of Keller Partner and founder at Sound Leadership, a creative management consultancy in New York City. As a management consultant and advisor with nine years of experience and as a University lecturer in management, he possesses deep practical and academic understanding of systemic management development. He leads projects in agile leadership transformation, digital change, strategy development and management education. His track record includes science and education, automotive, banking, logistics, chemical, health care, construction and IT industry. As a US based entrepreneur and startup founder, he designs and delivers entrepreneurship curricula for the Ivy League summer institute on Harvard and Yale campus.
Johannes is an advisory board member at a strategy advisory in Delhi, a policy think tank in London, and he is faculty member at the Applied Innovation Institute in Silicon Valley. He is a doctor in social and economic sciences from the University of Graz, Austria, and a summa cum laude graduate from world-renowned Berklee College of Music.
As the founder of Sound Leadership, he combines leadership development and creativity and leads projects for Fortune 100 companies and thought leaders across the US, Europe and Asia. He delivered programs on innovation and creativity at the Swiss Innovation Forum and Swiss Economic Forum.
Johannes Flecker is the author of a published book and articles about brand personality, strategy and goals and storytelling. He received awards by the Austrian Academy of Sciences, the Austrian Ministry of Sciences. Johannes has worked in Switzerland, India, Spain and France for 12 years. He lives in New York City.
Sandra Dentler is a content producer at Keller Partner in Bonn. Her responsibilities include the active supervision and further development of projects in the field of knowledge management and content marketing as well as conceptual and operational collaboration on client projects.
Sandra studied Modern and Contemporary History, Medieval History and Political Science at the Ludwig Maximilian University of Munich and the University of Dundee (Scotland).
After her studies, she worked for several years as a scientific-pedagogical assistant at the Bonn Memorial and as a consultant at the Dachau Concentration Camp Memorial. At the same time, she completed her doctorate on the topic of “‘Volksgemeinschaft’ in Bonn”.
In addition to numerous further training courses within the framework of the Graduate Center of the LMU on the topic of self-management, communication and leadership, she completed a six-month further training course in project management at the IU Academy.
Dario Cameretti has been providing strategic top management consulting since 2006. The issues with which he concerns himself encompass the full range of complex challenges that face management – both strategic and organisational aspects and issues surrounding operative and culture-specific procedures.
His expertise in systemically integrated corporate transformation enables his clients to implement effective, long-term working solutions together. Thus Dario Cameretti sees himself as a generalist who, if necessary, can deep dive into details with the client.
His knowledge of methods is based on his studies of chemical engineering at the Technical University of Dortmund as well as his 5-year stint at an international manufacturer of construction materials.
Moreover, his 10 years spent working with Prof. Dr Fredmund Malik at the Malik Management Centre in St. Gallen, latterly as an Associate Partner, took him to countless leading international companies and successful family-owned and run SMEs in industries ranging from agriculture, automotive, construction, chemicals, financial services, health, consumer goods, logistics, aerospace and machine and systems and plant construction.
Alongside his work as a management consultant he is constantly sought after as an instructor and tutor on international MBA programmes. He is a sparring partner for C-level managers and supports start-ups in developing their business models.
Dario Cameretti is the founder of cameretti management consulting in Wiesbaden and a network partner of Keller Partner.
Daniel Dunkhase is a network partner of Keller Partner in Bonn. His services include designing and implementing international programmes for leadership performance, coaching top management teams, acting as a sparring partner for senior executives and managing directors as well as providing support during effective implementation of corporate strategy. In more than 15 years he has advised around 5000 executives (at all levels), predominantly in senior and top management. He has gained vast international experience by leading and implementing global training and consulting projects with project work in Europe, Asia, USA and Australia.
Significant projects include, for example, providing strategic support and coaching on leadership and change management for 250 top executives of a global manufacturing company , running training and coaching programs for the senior executives of a global trade organization, accompanying and supporting the restructuring and coaching of a top management team in the Asia/Pacific region, helping them to become a high performance team.
Alongside his practical experience in different industries, Daniel has systematically developed his knowledge and expertise by working for leading international consultancies (including Malik Management and Kienbaum Consultants International) and by means of continuous further training and professional development.
Dr. Johannes Flecker is a networkpartner of Keller Partner and founder at Sound Leadership, a creative management consultancy in New York City. As a management consultant and advisor with nine years of experience and as a University lecturer in management, he possesses deep practical and academic understanding of systemic management development. He leads projects in agile leadership transformation, digital change, strategy development and management education. His track record includes science and education, automotive, banking, logistics, chemical, health care, construction and IT industry. As a US based entrepreneur and startup founder, he designs and delivers entrepreneurship curricula for the Ivy League summer institute on Harvard and Yale campus.
Johannes is an advisory board member at a strategy advisory in Delhi, a policy think tank in London, and he is faculty member at the Applied Innovation Institute in Silicon Valley. He is a doctor in social and economic sciences from the University of Graz, Austria, and a summa cum laude graduate from world-renowned Berklee College of Music.
As the founder of Sound Leadership, he combines leadership development and creativity and leads projects for Fortune 100 companies and thought leaders across the US, Europe and Asia. He delivered programs on innovation and creativity at the Swiss Innovation Forum and Swiss Economic Forum.
Johannes Flecker is the author of a published book and articles about brand personality, strategy and goals and storytelling. He received awards by the Austrian Academy of Sciences, the Austrian Ministry of Sciences. Johannes has worked in Switzerland, India, Spain and France for 12 years. He lives in New York City.
Bernhard Graßl
Prof. Dr. Katrin Keller
Bernhard Graßl is a network partner of Keller Partner. He works as a management trainer for international companies and SMEs and deals with the conception and development of learning and development, also with e-learning and blended learning. The range of services he offers spans conceiving training that incorporates the individual needs of the participants as well as the current situation and strategic goals of the company as well as delivering training as a trainer.
Bernhard Graßl has over 25 years of experience in vocational training. He began his professional career implementing complex multi-media products for large international IT groups and public sector clients and devised corporate simulations and web-based training for the German banking industry.
In addition, he has worked for Malik Management Centre in St. Gallen, where he spent ten years as a trainer and consultant for the company’s blended learning products, as well as for customers from retail, IT, personnel consulting as well as in the fields of academia and research. He has run and managed training and consultancy projects in Europe, Asia and the USA and works in both German and English.
Bernhard Graßl studied contemporary German literary history, German mediaeval language and literature and Catholic theology at the Ludwig-Maximilian University in Munich, where he worked for two years at the Institute of German Philology as a research assistant. Finally, he has also completed vocational and professional training in system-based management theory.
Prof. Dr. Katrin Keller has been a consultant, coach and trainer since 2008, mainly in Germany for profit and non-profit companies. Her central idea is “thinking humanly – acting entrepreneurially” and this is a common thread through her activities. After her dissertation at one of the major German communications companies, she was on the road in the field of “Talent and Change Management” at an international strategy consultancy. Following this, she was accountable for building an educational institute in cooperation with ministries, universities and the business sector in Stuttgart. Currently, she is accountable for the business development and the competence development of doctors in a health group
She began her academic career at the University of Koblenz-Landau with the study of educational sciences and was supplemented by an exchange program in Oxford. During her time at the consultancy, she substantiated her intellectual qualification with the distance learning of business management. In addition, she completed various certified training courses – e.g. the DISG-training or systemic conversation.
Markus Orengo
Mathias Pflüger
Markus Orengo is the founder of social systems engineering GmbH in Zurich and a network partner of Keller Partner in Bonn.
His expertise is in connecting strategy, organization and management. In classic approaches, these complex management domains are mostly dealt with in an isolated fashion. In contrast, Markus supports managers with decision power in understanding and developing them holistically and deliberately. At the center of his approach is a throughout orientation towards the customer, or towards the beneficiary, respectively.
In his function as a management consultant, trainer and university lecturer, Markus assures that these terms do not remain empty clichés. Instead, he supports managers in understanding their customers and their competitive situation in a structured manner and, on this basis, in developing customer oriented organizations, customer oriented innovation and management systems as well as customer oriented cost structures. His toolbox connects normative topics, such as vision and mission, with the operative management of individuals. The objective lies in achieving that each individual knows, which contribution she is supposed to deliver in her organization – and that she indeed wants, is allowed to and is able to deliver this contribution.
The approach of Markus is based on the systems oriented St. Gallen approach as well as on related approaches. He has refined it over many years in close interaction with his training and consulting experience. Markus has published the core elements of his approach in several publications, among others in the book ›Kundenorientierung‹ (Engl. Customer Orientation) (Verlag Tredition, 2017).
Before Markus started in dealing with the engineering of social systems, he used to focus on technical systems. After his studies of electrical engineering at the Swiss Federal Institute of Technology in Zurich he spent 12 years in complex, international IT and Telecom environments. At first he focused on purely technical tasks. Later, commercial and management tasks grew in importance. During the years 2005–07 he did an MBA in international Management in France. Markus speaks fluently Swiss German, German, English and French as well as a decent Italian.
Mathias Pflüger is a network partner of Keller Partner in Bonn. He works as a management trainer and consultant for international and medium-sized companies. He does this in various industries and contexts: Automotive, insurance, personnel services, telecommunications, publishing, fashion, energy, healthcare, administration and banking. His range of services includes the conception and implementation of leadership development programs, the support of change processes as well as the development of cultural patterns and cultural objectives of companies.
He has 19 years of experience as a trainer and consultant in which he managed and implemented numerous projects with several thousand executives at the Malik Management Zentrum in St. Gallen and as a freelancer.
He began his studies of organizational and business psychology at the University of Saarbrücken and finished it at the Ludwig-Maximilians-University in Munich where he also worked for three years as a research assistant at the chair of Prof. Rosenstiel. He completed in-service training in system-oriented management theory.
Bernhard Graßl is a network partner of Keller Partner. He works as a management trainer for international companies and SMEs and deals with the conception and development of learning and development, also with e-learning and blended learning. The range of services he offers spans conceiving training that incorporates the individual needs of the participants as well as the current situation and strategic goals of the company as well as delivering training as a trainer.
Bernhard Graßl has over 25 years of experience in vocational training. He began his professional career implementing complex multi-media products for large international IT groups and public sector clients and devised corporate simulations and web-based training for the German banking industry.
In addition, he has worked for Malik Management Centre in St. Gallen, where he spent ten years as a trainer and consultant for the company’s blended learning products, as well as for customers from retail, IT, personnel consulting as well as in the fields of academia and research. He has run and managed training and consultancy projects in Europe, Asia and the USA and works in both German and English.
Bernhard Graßl studied contemporary German literary history, German mediaeval language and literature and Catholic theology at the Ludwig-Maximilian University in Munich, where he worked for two years at the Institute of German Philology as a research assistant. Finally, he has also completed vocational and professional training in system-based management theory.
Prof. Dr. Katrin Keller has been a consultant, coach and trainer since 2008, mainly in Germany for profit and non-profit companies. Her central idea is “thinking humanly – acting entrepreneurially” and this is a common thread through her activities. After her dissertation at one of the major German communications companies, she was on the road in the field of “Talent and Change Management” at an international strategy consultancy. Following this, she was accountable for building an educational institute in cooperation with ministries, universities and the business sector in Stuttgart. Currently, she is accountable for the business development and the competence development of doctors in a health group
She began her academic career at the University of Koblenz-Landau with the study of educational sciences and was supplemented by an exchange program in Oxford. During her time at the consultancy, she substantiated her intellectual qualification with the distance learning of business management. In addition, she completed various certified training courses – e.g. the DISG-training or systemic conversation.
Markus Orengo is the founder of social systems engineering GmbH in Zurich and a network partner of Keller Partner in Bonn.
His expertise is in connecting strategy, organization and management. In classic approaches, these complex management domains are mostly dealt with in an isolated fashion. In contrast, Markus supports managers with decision power in understanding and developing them holistically and deliberately. At the center of his approach is a throughout orientation towards the customer, or towards the beneficiary, respectively.
In his function as a management consultant, trainer and university lecturer, Markus assures that these terms do not remain empty clichés. Instead, he supports managers in understanding their customers and their competitive situation in a structured manner and, on this basis, in developing customer oriented organizations, customer oriented innovation and management systems as well as customer oriented cost structures. His toolbox connects normative topics, such as vision and mission, with the operative management of individuals. The objective lies in achieving that each individual knows, which contribution she is supposed to deliver in her organization – and that she indeed wants, is allowed to and is able to deliver this contribution.
The approach of Markus is based on the systems oriented St. Gallen approach as well as on related approaches. He has refined it over many years in close interaction with his training and consulting experience. Markus has published the core elements of his approach in several publications, among others in the book ›Kundenorientierung‹ (Engl. Customer Orientation) (Verlag Tredition, 2017).
Before Markus started in dealing with the engineering of social systems, he used to focus on technical systems. After his studies of electrical engineering at the Swiss Federal Institute of Technology in Zurich he spent 12 years in complex, international IT and Telecom environments. At first he focused on purely technical tasks. Later, commercial and management tasks grew in importance. During the years 2005–07 he did an MBA in international Management in France. Markus speaks fluently Swiss German, German, English and French as well as a decent Italian.
Mathias Pflüger is a network partner of Keller Partner in Bonn. He works as a management trainer and consultant for international and medium-sized companies. He does this in various industries and contexts: Automotive, insurance, personnel services, telecommunications, publishing, fashion, energy, healthcare, administration and banking. His range of services includes the conception and implementation of leadership development programs, the support of change processes as well as the development of cultural patterns and cultural objectives of companies.
He has 19 years of experience as a trainer and consultant in which he managed and implemented numerous projects with several thousand executives at the Malik Management Zentrum in St. Gallen and as a freelancer.
He began his studies of organizational and business psychology at the University of Saarbrücken and finished it at the Ludwig-Maximilians-University in Munich where he also worked for three years as a research assistant at the chair of Prof. Rosenstiel. He completed in-service training in system-oriented management theory.
Dr. Gregor Rinn
Prof. Dr. Christian Kalhöfer
As a network partner at Keller Partner, Gregor Rinn focuses on facilitating clarity. This includes supporting individuals reconciling themselves with their roles and guiding teams through conflict or towards commonly shared goals. Clarity can only emerge when a person experiences something as meaningful. Understanding what the individual experiences and making these unique experiences being understood is the focus of his work.
Moreover he is familiar with the client‘s business context based on his ten years of experience as a strategic management consultant amongst others with The Boston Consulting Group, Oliver Wyman und Deekeling Arndt Advisors.
His work experience stretches not only across several lines of industry but encompasses also very diverse clientele. Whether it is for a group of bus drivers in Berlin of for high-ranking employees of the Royal Palace in Rhyiad, he has a keen focus on the individual person.
Having studied History and Psychology he has deep knowledge and expertise of change processes. He obtained his doctorate on the subject of the national self-perception of the German people in the picture of the automobile.
Prof. Dr. Christian Kalhöfer, network partner of Keller Partner, has been active for more than 20
years in the training and further education of executives, with focusing on the banking sector. In the classical topics of overall bank management, he works effectively with a blended learning / gamification approach using a simulation program, which enables the participants to achieve a deep understanding of the topic within a relatively short time and thus an intensive understanding of the overall context.
He began his academic career by studying industrial engineering (mechanical engineering) at the Technical University in Kaiserslautern. He completed his doctoral thesis on the use of the matched market rate concept in life insurance companies while working as a research associate at the Chair of Financial Services and Financial Management (Prof. Dr. Reinhold Hölscher).
He then worked as a professor at the German University in Cairo, where he was Head of Department for the Corporate Finance and Accounting departments. His next step led him to the American University of Paris, before he finally moved to the ADG Business School at the Steinbeis University Berlin. Here he holds the professorship for General Business Administration with a focus on Banking and Finance and, as academic director, is responsible for the master’s programs.
In his research, he deals not only with the original banking and financial topics but also with issues of business ethics. He is a member of the Society of Business Ethics.
Dr. Helge Baas
Martina Rühm
Dr. Helge Baas is network partner at Keller Partner from Berlin. Working as self-employed management consultant – for communicative corporate governance – since 2009, he focusses on conflict moderation. Primarily for hospitals, however in leadership development and transformational processes respectively of diverse industrial sectors as well.
During his studies, Helge Baas began coaching groups as clients. Later on he worked in the fields of organization and sustainability for renowned corporations, interest groups and government departments, in Germany and internationally. At last, he worked as a management consultant for strategic communicative governance with a well-known consultant firm.
Helge E. Baas studied philosophy, history and economics as well as medicine in Berlin, Hamburg and Jerusalem. And he wrote his psychological doctoral thesis on the essence of human life and action at the Humboldt University of Berlin. He was educated, trained and qualified with a gestalt-pedagogic and hypno-systemic emphasis as organizational consultant, coach & mediator.
Helge held a lectureship for ethics and values in corporate governance. Beyond that he has long-standing mindfulness/ self-awareness available: in particular with (grand-)masters of Advaita Vedanta or Zen Buddhism respectively and Taoist Kung-Fu.
Martina Rühm is a network partner of Keller Partner.
As an organisational consultant, she supports managers and decision-makers in analysing and changing organisational structures as well as in dealing with associated phenomena and necessities on the part of the organisational and management culture. This includes, for example, dealing with resistance or conflicts on a structural, team or individual level, advising and coaching managers on individual issues, deriving development needs for managers and much more.
During her studies of sociology, political science and psychology at the Free University of Berlin, Martina Rühm was already intensively involved with systems theory approaches and the interactions and mutual influence of systems and people/ the interactions between systems and people.
Martina Rühm has gained extensive practical experience in various roles and professional fields, sectors (e.g. mechanical engineering, automotive, information services, banking, pharmaceuticals, higher education and research,…) and organisational forms (e.g. international corporate structures, SMEs, public administration,…) with regard to the most diverse forms of regulation and control of organisations. Since 2014, Martina Rühm has been working as an independent organisational consultant and coach.
Her expertise in management and organisational consulting is based on the constant alignment and expansion of practical experience and theoretical training in the fields of organisational theory, management approaches, consulting and coaching.
As a network partner at Keller Partner, Gregor Rinn focuses on facilitating clarity. This includes supporting individuals reconciling themselves with their roles and guiding teams through conflict or towards commonly shared goals. Clarity can only emerge when a person experiences something as meaningful. Understanding what the individual experiences and making these unique experiences being understood is the focus of his work.
Moreover he is familiar with the client‘s business context based on his ten years of experience as a strategic management consultant amongst others with The Boston Consulting Group, Oliver Wyman und Deekeling Arndt Advisors.
His work experience stretches not only across several lines of industry but encompasses also very diverse clientele. Whether it is for a group of bus drivers in Berlin of for high-ranking employees of the Royal Palace in Rhyiad, he has a keen focus on the individual person.
Having studied History and Psychology he has deep knowledge and expertise of change processes. He obtained his doctorate on the subject of the national self-perception of the German people in the picture of the automobile.
Prof. Dr. Christian Kalhöfer, network partner of Keller Partner, has been active for more than 20
years in the training and further education of executives, with focusing on the banking sector. In the classical topics of overall bank management, he works effectively with a blended learning / gamification approach using a simulation program, which enables the participants to achieve a deep understanding of the topic within a relatively short time and thus an intensive understanding of the overall context.
He began his academic career by studying industrial engineering (mechanical engineering) at the Technical University in Kaiserslautern. He completed his doctoral thesis on the use of the matched market rate concept in life insurance companies while working as a research associate at the Chair of Financial Services and Financial Management (Prof. Dr. Reinhold Hölscher).
He then worked as a professor at the German University in Cairo, where he was Head of Department for the Corporate Finance and Accounting departments. His next step led him to the American University of Paris, before he finally moved to the ADG Business School at the Steinbeis University Berlin. Here he holds the professorship for General Business Administration with a focus on Banking and Finance and, as academic director, is responsible for the master’s programs.
In his research, he deals not only with the original banking and financial topics but also with issues of business ethics. He is a member of the Society of Business Ethics.
Dr. Helge Baas is network partner at Keller Partner from Berlin. Working as self-employed management consultant – for communicative corporate governance – since 2009, he focusses on conflict moderation. Primarily for hospitals, however in leadership development and transformational processes respectively of diverse industrial sectors as well.
During his studies, Helge Baas began coaching groups as clients. Later on he worked in the fields of organization and sustainability for renowned corporations, interest groups and government departments, in Germany and internationally. At last, he worked as a management consultant for strategic communicative governance with a well-known consultant firm.
Helge E. Baas studied philosophy, history and economics as well as medicine in Berlin, Hamburg and Jerusalem. And he wrote his psychological doctoral thesis on the essence of human life and action at the Humboldt University of Berlin. He was educated, trained and qualified with a gestalt-pedagogic and hypno-systemic emphasis as organizational consultant, coach & mediator.
Helge held a lectureship for ethics and values in corporate governance. Beyond that he has long-standing mindfulness/ self-awareness available: in particular with (grand-)masters of Advaita Vedanta or Zen Buddhism respectively and Taoist Kung-Fu.
Martina Rühm is a network partner of Keller Partner.
As an organisational consultant, she supports managers and decision-makers in analysing and changing organisational structures as well as in dealing with associated phenomena and necessities on the part of the organisational and management culture. This includes, for example, dealing with resistance or conflicts on a structural, team or individual level, advising and coaching managers on individual issues, deriving development needs for managers and much more.
During her studies of sociology, political science and psychology at the Free University of Berlin, Martina Rühm was already intensively involved with systems theory approaches and the interactions and mutual influence of systems and people/ the interactions between systems and people.
Martina Rühm has gained extensive practical experience in various roles and professional fields, sectors (e.g. mechanical engineering, automotive, information services, banking, pharmaceuticals, higher education and research,…) and organisational forms (e.g. international corporate structures, SMEs, public administration,…) with regard to the most diverse forms of regulation and control of organisations. Since 2014, Martina Rühm has been working as an independent organisational consultant and coach.
Her expertise in management and organisational consulting is based on the constant alignment and expansion of practical experience and theoretical training in the fields of organisational theory, management approaches, consulting and coaching.
Theo Zichel
Patricia Wand
Theo Zichel is a network partner of Keller Partner.
As an organisational consultant, intensive analytical consultant and coach, he supports managers and executives in analysing and changing organisational structures and cultures. He looks at emerging phenomena through a psychological and at the same time an organisational sociological perspective in order to do justice to the often high complexity with a holistic view. This includes, for example, dealing with resistance or conflicts on a structural, team or individual level, advising and coaching managers on individual issues and deriving development needs for managers.
He is a business psychologist specialising in personnel and organisational development. In his professional career to date, he has gained experience in agile and digital transformation and worked in an international consultancy with a focus on change, learning and communication. In his work with organisations and individuals, he combines depth psychological and systemic approaches.
Theo Zichel has been working as an independent organisational consultant and coach since 2022. At Les Enfants Terribles he works as an organisational developer and is involved in the strategic direction of the company. Together with Reni Meyza, he developed the FilterTalks format. FilterTalks are entertaining philosophical discussion rounds in which the group takes an in-depth look at a predefined theme, e.g. silence, meaning, encounter or leisure.
Thematically, he focuses on New Work and New Learning in his advisory work. Although he prefers to talk about good work rather than new work, because not everything that is new has to be better. He is concerned with the question of how organisations can adequately design their learning culture in everyday working life in order to better master challenges with their own resources. He believes that people want to experience self-efficacy and that organisations can create a good framework to enable this. For him, organisational development is not a temporary change project, but continuous work on one’s own organisational operating system.
Patricia Wand is a network partner of Keller Partner. As a consultant and coach she accompanies and supports individuals, teams, projects and organisational units through change projects. Her areas of expertise include change management, culture, communication, leadership and strategy.
Thanks to her broadly-based professional background she is extremely familiar with the environments in which her clients operate and is able to put her wide experience to good use. In addition to experience as a strategy consultant at the Boston Consulting Group and as a change management consultant in the energy sector she has many years of international leadership expertise in the fields of marketing and business development not to mention her own experience of founding a start-up.
Patricia Wand is qualified as an integrative systemic coach, organisational consultant and trainer. Furthermore she works as an agile coach and is also a certified SCRUM master.
Patricia studied business administration at the Otto Beisheim School of Management (Wissenschaftliche Hochschule für Unternehmensführung— WHU) in Koblenz and thus provides the network with in-depth knowledge of all aspects of corporate management and leadership.
Lea Hurtenbach
Rabea Seiler
Lea Hurtenbach supports Keller Partner in our social media marketing, creating the content of articles and newsletters, as well as managing the website. She already gained experience during internship in project marketing and in human resources with special focus on personal development and digital working. Besides, she participated in workshops focusing on internal corporate communication and employment law for psychologists.
In 2020, she successfully completed her bachelor’s degree in psychology at the Rheinische Friedrich-Wilhelms-Universität in Bonn. She is currently studying for a Master of Science in Psychology there. She is focussing on evaluation, differential psychology and, above all, industrial and organizational psychology.
Rabea Seiler supports Keller Partner and deals with questions of personnel development measures, the creation and further development of competence models, knowledge management, publication preparation and support with new, application-oriented management literature.
In her studies in psychology at the Rheinische Friedrich-Wilhelms-Universität in Bonn, she is focussing on industrial, organizational and business psychology as well as educational and clinical psychology.
Theo Zichel is a network partner of Keller Partner.
As an organisational consultant, intensive analytical consultant and coach, he supports managers and executives in analysing and changing organisational structures and cultures. He looks at emerging phenomena through a psychological and at the same time an organisational sociological perspective in order to do justice to the often high complexity with a holistic view. This includes, for example, dealing with resistance or conflicts on a structural, team or individual level, advising and coaching managers on individual issues and deriving development needs for managers.
He is a business psychologist specialising in personnel and organisational development. In his professional career to date, he has gained experience in agile and digital transformation and worked in an international consultancy with a focus on change, learning and communication. In his work with organisations and individuals, he combines depth psychological and systemic approaches.
Theo Zichel has been working as an independent organisational consultant and coach since 2022. At Les Enfants Terribles he works as an organisational developer and is involved in the strategic direction of the company. Together with Reni Meyza, he developed the FilterTalks format. FilterTalks are entertaining philosophical discussion rounds in which the group takes an in-depth look at a predefined theme, e.g. silence, meaning, encounter or leisure.
Thematically, he focuses on New Work and New Learning in his advisory work. Although he prefers to talk about good work rather than new work, because not everything that is new has to be better. He is concerned with the question of how organisations can adequately design their learning culture in everyday working life in order to better master challenges with their own resources. He believes that people want to experience self-efficacy and that organisations can create a good framework to enable this. For him, organisational development is not a temporary change project, but continuous work on one’s own organisational operating system.
Patricia Wand is a network partner of Keller Partner. As a consultant and coach she accompanies and supports individuals, teams, projects and organisational units through change projects. Her areas of expertise include change management, culture, communication, leadership and strategy.
Thanks to her broadly-based professional background she is extremely familiar with the environments in which her clients operate and is able to put her wide experience to good use. In addition to experience as a strategy consultant at the Boston Consulting Group and as a change management consultant in the energy sector she has many years of international leadership expertise in the fields of marketing and business development not to mention her own experience of founding a start-up.
Patricia Wand is qualified as an integrative systemic coach, organisational consultant and trainer. Furthermore she works as an agile coach and is also a certified SCRUM master.
Patricia studied business administration at the Otto Beisheim School of Management (Wissenschaftliche Hochschule für Unternehmensführung— WHU) in Koblenz and thus provides the network with in-depth knowledge of all aspects of corporate management and leadership.
Lea Hurtenbach supports Keller Partner in our social media marketing, creating the content of articles and newsletters, as well as managing the website. She already gained experience during internship in project marketing and in human resources with special focus on personal development and digital working. Besides, she participated in workshops focusing on internal corporate communication and employment law for psychologists.
In 2020, she successfully completed her bachelor’s degree in psychology at the Rheinische Friedrich-Wilhelms-Universität in Bonn. She is currently studying for a Master of Science in Psychology there. She is focussing on evaluation, differential psychology and, above all, industrial and organizational psychology.
Rabea Seiler supports Keller Partner and deals with questions of personnel development measures, the creation and further development of competence models, knowledge management, publication preparation and support with new, application-oriented management literature.
In her studies in psychology at the Rheinische Friedrich-Wilhelms-Universität in Bonn, she is focussing on industrial, organizational and business psychology as well as educational and clinical psychology.
Jan Cibis
Daphne Bieletzki
Jan Cibis supports Keller Partner in the area of content creation and knowledge management. He is involved in the research and preparation of scientific sources and management literature, as well as in the preparation of publications.
Before joining Keller Partner, he was able to gain insights into youth leadership, the structure of non-profit organisations and event management through voluntary work within the Protestant church.
He is currently studying for a Bachelor’s degree in Social Work at the University of Applied Science in Frankfurt. His current focus is on the management of non-profit organisations.
Daphne Bieletzki supports Keller Partner in the area of content creation. Drawing on the expertise of our consultants and a broad literature base, she designs and updates materials for our workshops. She is also an expert in editorial tasks.
To this end, she draws on her experience in public relations and editorial work. She is currently studying language and communication at RWTH Aachen University and is deepening her skills in the areas of elocution, rhetoric and corporate communication in her training as a speech teacher.
At Keller Partner, she wants to help each team develop individual concepts – for sustainable efficiency and the use of hidden potential. She is particularly enthusiastic about New Work approaches.
In addition to her work, she volunteers for a start-up, promoting the mental health of young people and accompanies delinquent youths for the youth court service in Aachen.
Melanie Klein
Melanie Klein supports Keller Partner in the area of preparatory accounting. As an interface to the external tax office, she is responsible for recording and checking incoming invoices, assists with the preparation of outgoing invoices and monitors payment transactions and the dunning process.
After her training as an industrial clerk, she worked for 17 years in the accounting department of a Cologne wholesale and foreign trade company and has been managing the back office of a garden centre for 13 years. At the same time, she completed further training to become an IHK business economist and then completed a bachelor’s degree in economics with a focus on finance and controlling at the distance learning university in Hagen. She joins the Keller Partner team to actively support them in the area of accounting.
Jan Cibis supports Keller Partner in the area of content creation and knowledge management. He is involved in the research and preparation of scientific sources and management literature, as well as in the preparation of publications.
Before joining Keller Partner, he was able to gain insights into youth leadership, the structure of non-profit organisations and event management through voluntary work within the Protestant church.
He is currently studying for a Bachelor’s degree in Social Work at the University of Applied Science in Frankfurt. His current focus is on the management of non-profit organisations.
Daphne Bieletzki supports Keller Partner in the area of content creation. Drawing on the expertise of our consultants and a broad literature base, she designs and updates materials for our workshops. She is also an expert in editorial tasks.
To this end, she draws on her experience in public relations and editorial work. She is currently studying language and communication at RWTH Aachen University and is deepening her skills in the areas of elocution, rhetoric and corporate communication in her training as a speech teacher.
At Keller Partner, she wants to help each team develop individual concepts – for sustainable efficiency and the use of hidden potential. She is particularly enthusiastic about New Work approaches.
In addition to her work, she volunteers for a start-up, promoting the mental health of young people and accompanies delinquent youths for the youth court service in Aachen.
Melanie Klein supports Keller Partner in the area of preparatory accounting. As an interface to the external tax office, she is responsible for recording and checking incoming invoices, assists with the preparation of outgoing invoices and monitors payment transactions and the dunning process.
After her training as an industrial clerk, she worked for 17 years in the accounting department of a Cologne wholesale and foreign trade company and has been managing the back office of a garden centre for 13 years. At the same time, she completed further training to become an IHK business economist and then completed a bachelor’s degree in economics with a focus on finance and controlling at the distance learning university in Hagen. She joins the Keller Partner team to actively support them in the area of accounting.