Commissioning Expert OSS Onshore/Offshore

We´re Hiring: Commissioning Expert - Mechanical & Auxiliary Systems (Offshore / Onshore Substations) Are you a seasoned commissioning professional with a strong background in mechanical and auxiliary systems? Locations: The Netherlands (Vlissingen, Schiedam, Stormpolder), Offshore Baltic Sea, Berlin Type: Freelance or employment Level: Professional / Expert Assignment: Long‑term assignment (until end of 2027) on major offshore wind projects. Your Mission Plan, execute, and supervise commissioning of mechanical & auxiliary systems, including HVAC, LV switchboards, firefighting (FiFi) systems, cranes, communication, and safety systems. Ensure full compliance with technical specifications, certification, and HSE standards. Conduct FAT/SAT (Factory and Site Acceptance Testing), signal testing, and inspections. Identify and report deviations and maintain up-to-date snag lists, punch lists, and documentation. Support partial and final system acceptance in factory, yard, and offshore locations. Collaborate with construction, QA/QC, and engineering teams for smooth integration. Your Profile 5+ years of experience in commissioning and integration of auxiliary/mechanical systems on substations or industrial platforms. In-depth knowledge of DIN VDE, IEC standards, and relevant certification requirements. Experience with QA/QC processes during fabrication and commissioning phases. Valid GWO (Global Wind Organisation) certification for offshore work. Fluent English required; German is a plus. Ready to take on the challenge — or know someone who fits? Let’s connect! #J-18808-Ljbffr T.I.S. GmbH | Testing & Inspection Services