| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | Harder Finanz GmbH in Liquidation | 🇨🇭Svizzera | Dissolved | 26/01/2017 – present |
| Officer | Harder Invest GmbH | 🇨🇭Svizzera | Active | 09/01/2020 – present |
| Officer | Industrielle Betriebe Interlaken (IBI) AG | 🇨🇭Svizzera | Active | 26/05/2020 – present |
| Officer | Lehmann + Bacher Treuhand AG | 🇨🇭Svizzera | Active | 25/02/2019 – present |
| Officer | Lüthi Treuhand AG | 🇨🇭Svizzera | Active | 25/06/2018 – present |
10/06/2021
appointed
24/08/2020
appointed
25/02/2019
appointed