Commissioning Expert Secondary Systems (Offshore Substations, Baltic Sea) TIS GmbH 2 hours ago

Vochure; Rostock; Hybrid; EUR 90,000 - 130,000; Full time

Job summary

T.I.S. GmbH is seeking a Commissioning Expert for offshore substation platforms in the German Baltic Sea. Work on the owner's side for a German transmission system operator, focusing on secondary systems: protection, control, LV cabling, and signal chains.

You will witness tests, ensure installation conformance, and support handover with thorough documentation. The role requires offshore readiness, German working level, and willingness to travel in Germany and abroad.

Qualifications

• Electrical engineering background required for offshore commissioning.
• Experience integrating and testing electrical components on offshore platforms.
• Knowledge of LV cabling and protection/control wiring in offshore substations.
• Familiarity with DIN VDE, IEC standards and offshore codes.

Responsibilities

• Advise the client on secondary-systems commissioning from mechanical completion through energisation.
• Review and witness LV cabling and wiring for protection and control against drawings and specs.
• Prepare, run and document signal tests and loop checks between field devices, relays, controls and SCADA.
• Check integration/testing of secondary components from different contractors and verify interfaces.
• Record deviations, raise punch items and close them with contractors.
• Verify commissioning documentation, test records and as‑built status before handover.
• Report progress, open points and risks to the commissioning lead.

Skills

Electrical engineering

Offshore experience

System integration testing

LV cabling and protection/control

DIN VDE/IEC standards

German language at working level

Education

Electrical engineering degree or equivalent

Job description

T.I.S. GmbH is looking for a Commissioning Expert Secondary Systems for the commissioning of two offshore substation platforms in the German Baltic Sea. You work on the owner's side for a German transmission system operator within the OSS sub-project of a grid connection scheme covering platform, export cable, land cable and onshore substation. Your subject is the secondary technology: protection, control, LV cabling and the signal chain between them. You advise the client's commissioning team, witness and run tests on the platforms, and make sure what was installed matches what was specified.

Location: Offshore, from Rostock Start: End of 2026 Duration: Until 30.09.2027, extension possible Workload: Rotation based work Contract: [Freelance]

Your tasks

• Advise the client on the secondary-systems commissioning of both platforms, from mechanical completion through energisation

• Review and witness LV cabling and communication wiring for protection and control systems against drawings, schematics and specifications

• Prepare, run and document signal tests and loop checks between field devices, protection relays, control systems and the substation SCADA

• Check the integration and testing of secondary components supplied by different contractors, and verify interfaces between them

• Record deviations, raise punch items and follow them through to close-out with the contractors

• Verify commissioning documentation, test records and as-built status before handover

• Report progress, open points and risks to the client's commissioning lead

What you bring

• Electrical engineering background, as a degree or as equivalent professional experience

• At least 5 years' experience in integrating and testing components and devices in electrical systems, ideally on offshore platforms

• Hands-on experience commissioning secondary components and running signal tests

• Experience with LV cabling and communication wiring for protection and control on offshore substations

• Working knowledge of DIN VDE, IEC and the relevant offshore codes (DNV)

• Fit for offshore work and willing to travel in Germany and abroad; valid GWO and offshore medical, or the readiness to obtain them before start

• German at working level. The client's documentation and communication are in German.