Thomas Sigi was born on November 26, 1964 in Konstanz.
After completing vocational training he studied Management at the University of Applied Sciences in Konstanz (HTWG). This was followed by part-time studies at the Business and Management School of St Gallen. He took his Master of Business Administration, specializing in Human Capital Management, at HTWG.
From 1992 to 1995 Sigi worked as General Manager of CSA Computer GmbH in Konstanz. He was then a management and human resources consultant in St Gallen and Tägerwillen until 1997.
In 1998 Sigi moved to AUDI AG in Neckarsulm, taking up the post of Human Resources Director. Four years later he left Audi to become General Manager and Labor Director of ALCAN Holding Germany GmbH.
He became Human Resources Director of the Volkswagen Kassel plant and Head of the Components Board Area for Volkswagen AG in 2006.
Three years later the Supervisory Board of ZF Friedrichshafen AG appointed him Executive Vice President with effect from August 2009. His responsibilities there encompassed the Human Resources Department, the role of Labor Director and the service companies.
Thomas Sigi has been Labor Relations Director and Member of the Board of Management of AUDI AG with responsibility for Human Resources since October 1, 2010.