Commissioning Expert OSS Onshore/Offshore

T.I.S. GmbH | Testing & Inspection Services; Germany (OH); Remote; USD 69,000 - 127,000; Full time

Job summary

A leading engineering firm is seeking a Commissioning Expert for mechanical and auxiliary systems for major offshore wind projects until the end of 2027. The position involves planning and supervising the commissioning process ensuring compliance with safety and technical standards. Required qualifications include 5+ years of experience, valid GWO certification, and fluency in English. Opportunities available in various locations including The Netherlands and Germany.

Qualifications

• 5+ years of experience in commissioning and integration of auxiliary/mechanical systems on substations or industrial platforms.
• In-depth knowledge of relevant certification requirements.
• Valid GWO (Global Wind Organisation) certification for offshore work.
• Valid GWO certification for offshore work.
• Fluent English; German is a plus.

Responsibilities

• Plan, execute, and supervise commissioning of mechanical & auxiliary systems.
• Ensure compliance with technical specifications and standards.
• Conduct FAT/SAT and inspections.
• Identify and report deviations and maintain 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.

Skills

Commissioning mechanical & auxiliary systems

HSE standards compliance

QA/QC processes

Fluent English

DIN VDE, IEC standards

Education

GWO offshore certification

Tools

HVAC systems

Firefighting systems (FiFi)

Low Voltage switchboards

Job description

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!