Board of Directors

Robert Klaffus

Chief Executive Officer (CEO)
Appointed to Board of Directors: 01/11/2023

Executive Board term expires: 10/2028
Nationality: German
Year of birth: 1979

Special responsibilities:

  • Strategy
  • Marketing and sales
  • Technology
  • Investor Relations

Gunnar Glöckner

Chief Financial Officer (CFO)
Appointed to Board of Directors: 01/07/2021

Executive Board term expires: 06/2029
Nationality: German
Year of birth: 1970

Special responsibilities:

  • Organisation
  • Personnel
  • Finance/Controlling
  • Sustainability (ESG/CSR)


Robert Klaffus has been Chief Executive Officer of PSI Software SE since November 2023. From 2005 to 2023, he held various positions in the Siemens Group, most recently as Senior Vice President Operations in the Electrification division. Robert Klaffus studied industrial engineering and management with a degree in engineering at the Technical University of Berlin and business administration with a master's degree at the ESCP Business School. He completed the Executive MBA program of the Instituto de Empresa, graduating with an Executive MBA.


Gunnar Glöckner has been a member of the Executive Board of PSI Software SE since July 2021. Prior to this, he was a partner in an international auditing company. In his more than 25 years as an auditor, he has primarily audited and advised energy utilities and listed companies. Gunnar Glöckner studied business administration at Freie Universität Berlin (Free University of Berlin) and passed his auditing exam in 2001.