Ingo Siefermann
🇩🇪Germania
Summary
NationalityGermania
Roles & Positions
| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | TBS Suhr Holding AG | 🇨🇭Svizzera | Active | 18/12/2025 – present |
| Officer | TBS Telekom AG | 🇨🇭Svizzera | Active | 18/12/2025 – present |
| Officer | TBS Wasser AG | 🇨🇭Svizzera | Active | 18/12/2025 – present |
| Officer | TBS Strom AG | 🇨🇭Svizzera | Active | 18/12/2025 – present |
| Officer | Fernwärme Wynenfeld AG | 🇨🇭Svizzera | Active | 14/08/2025 – present |
| Officer | Geo-Energie Suisse AG | 🇨🇭Svizzera | Active | 07/08/2024 – present |
| Officer | Energie Wasser Bern | 🇨🇭Svizzera | Active | 04/04/2023 – present |
| Officer | IWK Integrierte Wärme und Kraft AG | 🇨🇭Svizzera | Active | 15/07/2019 – present |
| Officer | Energie 360 Grad AG | 🇨🇭Svizzera | Active | 18/11/2019 – present |