Mechanical Commissioning Engineer

Pubblicato il 11-11-2026 · Vivid Resourcing · Italia

Contract
Our client is an engineering contractor delivering a green steel facility, and the project is now moving into the commissioning phase. They are looking for a Mechanical Commissioning Engineer to join the team in Castellanza, Italy, from January.
The role centres on testing and commissioning two key areas of the plant: the hydrogen systems and the cooling systems. You will be the lead mechanical voice for this scope, taking systems from construction completion through pre-commissioning and into live testing, and working closely with the wider commissioning, construction and operations teams.
The project team already has colleagues on site, but this skill set is not covered internally, so the successful candidate will have the final say on mechanical commissioning for these systems and be trusted to make decisions independently.
Lead the mechanical pre-commissioning and commissioning of the hydrogen systems
Lead the mechanical pre-commissioning and commissioning of the cooling systems
Plan and carry out system walkdowns, checks, flushing, cleaning and pressure and leak testing
Review P&IDs;, isometrics, datasheets and vendor documentation to confirm systems are ready for testing
Prepare, run and sign off commissioning procedures,



test records and handover documentation
Coordinate with construction, electrical, instrumentation and operations teams to sequence activities
Support vendors and subcontractors working on mechanical equipment during testing
Enforce site safety requirements, permit to work procedures and safe systems of work
Report progress, risks and technical issues to the project team
Proven experience as a mechanical commissioning engineer on large industrial or process plant projects
Hands-on experience commissioning hydrogen systems or comparable high-hazard gas systems
Experience commissioning cooling water or other process cooling systems
Strong working knowledge of pre-commissioning activities, including flushing, pressure testing and leak testing
Experience managing punch lists, test records and commissioning handover packs
Contract position on a green steel project, based in Castellanza, Italy
Technical ownership of the hydrogen and cooling systems
If you are a mechanical commissioning engineer with hydrogen and cooling systems experience, this role offers a clear scope and real responsibility on a major decarbonisation project.
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