Who’s in charge of operations

Management


Personal details

Jens Vollmar
Chief Executive Officer & Head Division Service Solutions

Personal data

  • Born 1984
  • German citizen

Education

  • Degree in business economics from the University of St. Gallen (Dr. oec. HSG)

Professional Experience

  • Since April 2025
    Chief Executive Officer
  • 2019—2025
    Head Division Buildings and Country President Switzerland
  • 2015—2018
    Business Unit Head Buildings, Implenia
  • 2014—2015
    Head Business Development Buildings, Implenia
  • 2013—2014
    Head CEO Support, Implenia
  • 2011—2013
    Senior Consultant at the Institute for Finance, Financial Law, and Law & Economics, University of St. Gallen (HSG)

Additional functions and offices

  • Lecturer in Construction and Real Estate Management, University of St. Gallen (HSG)
  • Vice president of the association «Entwicklung Schweiz»
  • Member of the association «Bauenschweiz»

 


Personal details

Adrian Wyss
Head Division Real Estate

Personal data

  • Born 1975
  • Swiss citizen

Education

  • Architect, University of Applied Sciences
  • Postgraduate degree in Business Administration, Bern\ University of Applied Sciences

Professional Experience

  • Since 2019 
    Head Division Real Estate
  • 2015—2019
    Business Unit Head Modernization & Development, Implenia
  • 2013—2015
    Head Modernization, Implenia
  • 2006—2013 
    Various functions within Implenia
  • 2000—2006
    Architect at Pfister Schiess Tropeano Architekten, Zurich

 


Personal details

Erwin Scherer
Head Division Civil Engineering

Personal data

  • Born in 1966
  • Austrian citizen

Education

  • Master of Science in Subsurface Engineering, Montan University Leoben

Professional career

  • since September 2024
    Head Division Civil Engineering
  • 2019 – 2024
    Global Head Tunneling at Implenia
  • 2002 – 2019
    Head of the Tunneling Division at Ed. Züblin AG
  • 1999 – 2001
    Senior Project Manager at Walter Bau AG
  • 1995 – 1999
    Construction Manager at Stuag / Strabag AG, Vienna

Additional functions and offices

  • Member of the Board of the association European International Contractors (EIC)
  • Member of the Board of the association Austrian Society for Construction Technology (ÖBV)

Personal details

Stefan Baumgärtner
Chief Financial Officer

Personal data

  • Born 1971
  • Swiss citizen

Education

  • Executive MBA, Dipl. Controller NDS HF, FHS Ostschweiz
  • Industrial Engineer, University of Liechtenstein

Professional Experience

  • since 2022
    CFO Implenia Group
  • 2017 – 2022
    CFO EMS Group
  • 2014 – 2017
    Division CFO of RUAG Space
  • 2008 – 2014
    Vice President Finance  Sulzer in Houston, Texas

Personal details

Petra Feigl Fässler
Chief Human Resources Officer (effective September 1, 2026)

Personal Information

  • Swiss citizen

Education

  • Master’s degree in Economics, University of St. Gallen (HSG)
  • Certificate in Change Management, INSEAD Paris

Professional Career

  • Effective September 1, 2026
    Chief Human Resources Officer (CHRO) of the Implenia Group, Member of the Implenia Executive Committee (IEC)
  • 2020–2026 
    Head of Human Resources and Communications, Member of the Executive Board, Migros Industrie
  • 2016–2020
    Head of Human Resources, NZZ Media Group
  • 2010 – 2016
    Global Head of Human Resources, Nobel Biocare
  • 2006 – 2010
    Global Head of Talent Acquisition, Syngenta
  • 1997 – 2006
    Senior Manager, Financial Services, Accenture AG

Board of Directors Appointments

  • Member of the Board of Directors, Groupe Mutuel Holding
  • Member of the Board of Trustees, HIG Real Estate Foundation

Personal details

Dr. German Grüniger
General Counsel

Personal data

  • Born 1969
  • Swiss citizen

Education

  • Lic. iur., University of Freiburg
  • Dr. iur., University of Basel
  • LL.M., New York University
  • Attorney at Law
  • Stanford Executive Program (2019)

Professional Experience

  • Since 2014
    General Counsel and Chief Compliance Officer Implenia Group
  • 1996—2014
    Associate and partner at the law firm Schumacher Baur Hürlimann, Zurich and Baden (today Baur Hürlimann AG)
  • 1995—1996
    Law clerk, distict court of Zurzach

Memberships on Boards of Directors

  • MediData AG (Chairman)
  • Bürgenstock Hotels AG (Member)
  • Bürgenstock Bahn AG (Member)
  • Bergbahnen Beckenried-Emmetten AG (Vice-Chair)

Additional functions and offices

  • Board of Trustees of the Felsenweg am Bürgenstock Foundation (Vice-Chairman)

 


About Implenia