Senior Mechanical Systems Commissioning Engineer – Offshore, WHT, Subsea

About the role

Penspen is seeking an experienced Senior Commissioning Engineer to lead mechanical systems commissioning for offshore oil & gas projects, including Wellhead Towers, offshore platforms, subsea pipelines and brownfield modifications.

Key responsibilities

• Execute mechanical commissioning activities for offshore facilities, ensuring safe pre‑commissioning, testing, start‑up and hand‑over to operations.
• Develop Mechanical Commissioning Execution Plans, procedures, schedules and systemisation strategies.
• Review engineering deliverables, vendor manuals, P&IDs, datasheets and operating philosophies.
• Coordinate offshore hook‑up, pigging, hydro‑testing and pipeline start‑up campaigns.
• Manage OEM and vendor specialist involvement and resolve technical issues affecting startup and operational readiness.

Required profile

• Bachelor’s degree in Mechanical Engineering from an accredited university.
• Minimum 15 years of experience, with at least 5 years in offshore mechanical commissioning and startup.
• Proven experience on offshore platforms, Wellhead Towers, jackets, topsides and brownfield facilities.
• Previous work on PMC/EPC projects; ADNOC offshore experience is an advantage.

Required skills

• Mechanical commissioning of offshore Wellhead Towers and production facilities.
• Subsea pipeline and pigging system commissioning.
• Hydro‑testing and pipeline reinstatement procedures.
• OEM and vendor coordination during startup.