Dominik Spiess Partner – Audit, Accounting, Tax Geneva +41 22 718 41 42

Dominik Spiess is Partner of Grant Thornton Switzerland/ Liechtenstein and heads the Geneva and Lausanne offices.

Professional experience

Dominik Spiess has more than 25 years’ experience in auditing companies, SMEs and banks. He also provides audit, taxation, management consultancy and forensic accounting (expert assessment) services.

He worked for eight years as an auditor, consultant and later as a manager at a consulting firm in Geneva, Zurich and Chicago. Afterwards he founded Baker Tilly Spiess SA, where he was Chairman of the Board of Directors from 1993 to 2018 and joined Grant Thornton on 1 January 2019.

Professional qualifications and memberships

Dominik Spiess is a licensed audit expert and a certified accountant. He holds an MSc in Business Administration from HEC (Faculty of Business and Economics) Lausanne. Dominik Spiess is a member of EXPERTsuisse and a former vice-chairman of the national committee, former president of the Académie, former member of the technical audit committee,

former committee member of the Section Geneva of EXPERTsuisse.


In addition to his native language of German, Dominik Spiess speaks fluent French and English.

  • audit expert
  • certified accountant
  • MSc in Business Administration
CV curriculum vitae Download PDF (238 kb)