Peter Mettler is the CEO and founder of STM Steuerberatung Treuhand Mettler AG. Thanks to his extensive education and many years of broad professional experience, he possesses comprehensive expertise across all areas of fiduciary services. His main areas of focus are tax consulting and tax optimization for companies and their owner.

| 2008 | Admission as Licensed Audit Expert RAB |
| 2004 | Founding of STM Steuerberatung & Treuhand Mettler AG |
| 2001 - 2004 | Tax Consultant and Member of the Board of Directors at a large consulting and fiduciary company in Zurich |
| 2000 | Certified Tax Expert |
| 1998 - 2001 | Tax Consultant and Member of the Executive Board at a medium-sized consulting and fiduciary company in Zurich |
| 1996 - 1998 | Tax Consultant at one of the "Big Four" in Zurich |
| 1995 | Certified Specialist in Finance and Accounting |
| 1993 - 1996 | Fiduciary Specialist in Zug (Accounting, Tax Consulting and Auditing) |
| 1991 - 1993 | Financial Accountant at a large international consulting company headquartered in Zurich |
German, English