As a Senior Commissioning Engineer, you will be responsible for independently testing and commissioning secondary systems within high-voltage environments. You will carry out functional testing, verify system performance, support FAT, SAT, and SIT activities, and ensure installations are ready for safe operation. You will coordinate closely with project teams and customers, prepare commissioning documentation, track outstanding issues, and play a leading role in the successful handover of installations. Throughout all activities, you will maintain a strong focus on safety, quality, and technical excellence.