Who we are

For many years we have been using a holistic approach to reorientation. Our aim is for clients not to simply find any career solution but rather one that encompasses all aspects of the individual's life, both professional and personal. It is our passion to support clients this way!

Your point of contact

The partners – and at the same time owners - of Dr. Nadig + Partner AG, are your first point of contact - whether you are interested in a consultation package or have any questions.

Dr. Petra Bitzer-Gross


Studied business administration in Germany and in the USA and graduated with a MBA. She obtained a Doctorate in economics at the University of St. Gallen. She worked several years as a research assistant at the Institute for International Management at the University of St. Gallen. She then spent many years at UBS in Human Resource Management and has extensive leadership experience. She was responsible for the support of expatriates, led the College Recruiting and Marketing as well as the apprentices field, and finally for the recruitment for the whole of Switzerland. Furthermore, she was several years lecturer at the Zurich Universities for Applied Sciences (ZHAW and HWZ). Since 2011 she works with Dr. Nadig + Partner AG, since 2015 as a Partner.


Jan Brinker


Jan Brinker began his career at Zürichsee-Schifffahrtsgesellschaft following an apprenticeship as a railway traffic technician. In 1998, he gained a Swiss federal professional qualification in human resources and, since then, has worked in various roles in human resources in the retail, media and wholesale sectors. He completed an Executive MBA at the University of Applied Sciences and Arts Northwestern Switzerland FHNW in 2012 and, in his master's thesis, drew up a strategic marketing concept for an HR department, taking into consideration the typology of C.G. Jung. From 2006 on he was Head of Human Resources and a member of the extended management team at Daimler in Switzerland (Mercedes Benz Schweiz AG). He has extensive management experience both in Switzerland and internationally. Since 2017 he works with Dr. Nadig + Partner AG, since 2018 as a Partner.


Stefanie Rieger


Studied psychology (TU Darmstadt) in Germany and started her career in the Human Resources department of Lufthansa AG in Frankfurt. Later on she completed an Executive MBA at the University of St. Gallen and held several national and international HR Leadership and Management functions in
the fields of business consulting, tourism, financial services and ICT. She also led client projects in health care, engineering, and logistics companies. As Head HR of Kuoni Switzerland and later as Chief HR Officer of the European Division of Kuoni, she led the People Dimension of a variety of major business transformations and initiatives. Since 2019 she works with Dr. Nadig + Partner AG, since april 2021 as a Partner.



Our clients are not young professionals and neither are our consultants. We all have proven professional and managerial background across various industries and additionally are qualified in HR, Psychology and/or Coaching. We have extensive expertise consulting to clients with high expectations. From our many years of professional experience as executives and consultants, we know and understand the business and employment market in Switzerland.

Richard Scherrer

Senior Consultant

Richard studied Economics and Economic History at the University of Zurich. After training as a programmer/analyst, he moved into banking as a financial analyst for Swiss Equities at ZKB. Subsequently he headed the Business Training Department of SKA for five years before moving to the human resources department of the present CS in 1991. Until 2016, he held various managerial positions in HR and completed part-time management training at INSEAD (AMP 2001) and holds a Master in Supervision and Coaching (ZHAW 2011) as well as in-house training as a career advisor. Since 2007, he has focused his activities on consulting for professional reorientation. In addition to his work at Dr. Nadig + Partner AG, he works as an independent coach.


Michal Chaimi-van Dijk

Senior Consultant

Michal holds an MA in Business and Economics from Zurich University (focus Human Resources Management). She spent ten years in the Banking and Energy business trading in Energy Derivatives. Since 2004, she has furthered her education in Psychological Counseling and Coaching and has spent several years working in HR Management at UBS. There she held positions in recruiting, as HR Business Partner and HR Manager. Michal holds a Diploma of Advanced Studies in Professional Coaching (University of Applied Sciences Nordwestschweiz) and in addition to her work at Dr. Nadig + Partner AG is also an independent coach.


Dr. Chris Bitzer

Senior Consultant

Chris studied and completed his Ph.D. in Business Economics at the University of St. Gallen. Subsequently, Chris served as head of global sales and CFO with an international sporting goods company in Germany. A change into the strategic consultancy practice followed when he joined the Boston Consulting Group in Zurich. Over the next 15 years he held various leadership positions within the Swiss Re Group. The last few years at Swiss Re he was a member of the Group Management Board and led the global HR function. He joined Dr. Nadig + Partner AG as a Senior Consultant in 2014 and is also a management consultant and sports mind coach for professional athletes.


Sandra Doldinger

Senior Consultant

Sandra studied psychology, psychopathology and social- and preventive medicine at the University of Zurich. In addition she holds a post-graduate degree as Master of Advanced Studies in Psychology of Career Counseling and is qualified in person-centered psychotherapy as well as relationship and family therapy. She worked as Social Integration Advisor and section leader at the Swiss Federal Disability Insurance for many years and has been practicing as an independent psychotherapist and career counselor for the last twenty years.


Caroline Keller

Senior Consultant

After her banking apprenticeship, Caroline worked as an investment advisor for several years. She then studied Business Computer Science (University of Konstanz) and Computer Science (Coventry University, UK). Caroline began her IT career at UBS in Zurich. In the following years, working at Ergon Informatik AG, she continued to handle projects in Banking and later in the ICT industry. Since 2005, she developed further in coaching, training, change management (MAS executive coaching, CAS coaching advanced) and set up the new Human Resource Development Unit. In 2009 she headed up the Training Department at the Academy of Avaloq Evolution AG.


Stephan Grötzinger

Senior Consultant

Stephan gained his Master of Civil Engineering from the polytechnical University of Zürich (ETHZ) and initially worked for several years as a project manager. Later, in 1996 he developed novel anchoring systems and co-founded Basys AG as a start-up. After having completed his MBA, he then joined the Electrowatt Group (now Afry), where he served as Managing Director responsible for Switzerland and various international subsidiaries. He then led TCS as CEO and was an executive board member of SBB Infrastructure. Stephan also holds an Executive Master in Consulting and Coaching for Change (INSEAD) and a Coaching Certificate (INSEAD). In addition to his activities at Dr. Nadig + Partner AG, he works as an independent management consultant focused on organizational development, change management and executive coaching.


Adrian Türler

Senior Consultant

Adrian completed his Master of Law (University of Zurich) and holds a Masters in Human Resources Management (University of Applied Sciences and Arts Nordwestschweiz). His professional career spans more than twenty years as Head of HR and includes senior management positions in national and international companies (EKZ, Burkhalter Group, von Roll/Innova and AE&E). Adrian holds an Executive MBA from the University of Zurich. In addition to his work at Dr. Nadig + Partner AG, Adrian is an independent consultant in various national and international companies on issues of strategic HR management as project manager as well as ad interim HR manager.


Laura-Katrin Seitz

Senior Consultant

With degrees as Master in Asian Studies and Law, and an MBA, Laura has gained experience in International Relations, Business Development and Marketing in Asia, before moving into Human Resources. Subsequently, she worked a few years in Executive Search for the TIMES Industry. The following years 2003-2016 were dedicated to Pharma and Biotech: As Vice President and Global Head of HR she served Boehringer Ingelheim, Sanofi, and Roche, where she was also member of the global HR Leadership Team and one of the key architects of the integration with Genentech. In 2016, Laura established her own consulting business with focus on HR strategy, M&A, and change management. In addition, she advises start-ups and runs her own pro bono projects in the areas of humanitarian aid and human rights.


Stefan Poth

Senior Consultant

After completing an apprenticeship, Stefan Poth received an engineering diploma FH (esig+/comem+) at the University of Applied Sciences in Lausanne. His many years experience spans across consulting, editorial, publishing and as Managing Director of a media company. He has gained extensive experience through the start up of a number of reputable digital business projects. Over the last 20 years, Stefan Poth has been an active entrepreneur, founder and Managing Director of an Executive Search Consulting company specialising in marketing and communication. He also leads and lectures a course in Personal Branding at the HWZ University of Applied Sciences in Business Administration, and is a part-time mentor (50plus) at the RAV in Zug and Aargau. In addition to his work at Dr. Nadig + Partner AG, he is active in executive search, and also certified as integral coach and nature coach in the area of deceleration and resilience.


Madeleine Rieder

Senior Consultant

Madeleine holds a degree in Educational Psychology (M.Sc.) and Communication from the University of Fribourg. After completing her studies, she joined a renowned international management consultancy, and over several years expanded her area of responsibility developing the Management Academy where she held various managerial positions. In 2013 she moved into the banking sector, and for the next seven years she was responsible for management development at the Raiffeisen Group. She has also completed various training courses in management and coaching. Madeleine completed a DAS in Bank Management at the Institute of Financial Services Zug in 2017. In addition to her work at Dr. Nadig + Partner AG she has her own company focussing primarily on the areas of assessment and leadership development as well as training.


Ruth Derrer Balladore

Senior Consultant

Ruth studied law in Zurich and was admitted to the Bar in 1988. After 10 years at the court, she became Staff Manager in the Ministry for Education in Zurich, followed by two years as Human Resources Director of the Canton of Zurich. She worked as Human Resources Director at PwC between 2001 and 2002 before becoming a member of the Executive Board of the Swiss Employers' Confederation. Here during the next 10 years, she was responsible for employer policies, specifically labor market participation of older employees, women and migrants. Besides her work with Dr. Nadig + Partner AG, Ruth works as a part-time judge at the Labour Court of Zurich and also teaches in higher education.


Dr. Matthias Kaiserswerth

Senior Consultant

Matthias studied Computer Science at the University Erlangen-Nuremberg and McGill University, Canada. He received his doctorate in Engineering from the University Erlangen-Nuremberg. He worked at IBM for 27 years, as a scientist as well as a key account manager. For over ten years he lead IBM's European Research Laboratory in Zurich. Additionally, as Technical Executive, he was responsible for career planning and the development of IBM's technical resources in Germany, Austria, and Switzerland. Since 2015 he is Managing Director of the Hasler Foundation in Bern and works as Senior Consultant for Dr. Nadig + Partner AG.



Dr. Toni Nadig


Dr. Toni Nadig founded the company in 2005. As the founder and owner, he shaped the company to a large degree. 


Brigitte Reemts


Brigitte Reemts was partner of the company from 2007 to 2020 and shaped the company to a large degree.



Tatjana Schmid


Tamara Schärer


Kathrin Bürgi





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