Silver Back is the go-to specialised technical recruiter of mobile, scarce talent for international new-industry construction projects. We don't just fill vacancies, we build careers. We believe our candidates are just as important as our clients, and when you partner with us, you get a dedicated team that champions your professional growth. Currently, we are recruiting for a Commissioning Mechanical Supervisor (m/w/d) for a major industrial project in Huelva, Spain.
This role is critical to ensuring the safe, efficient, and quality-driven pre-commissioning and commissioning of all static and rotating mechanical equipment on site. As Commissioning Mechanical Supervisor, you will lead field execution, oversee equipment run-ins and alignments, manage system walkdowns, and work closely with Construction, QA/QC, Vendor Representatives, and Completions teams to transition mechanical subsystems smoothly into operation.
Key Responsibilities
Mechanical Commissioning & Execution: Supervise day-to-day mechanical pre-commissioning and commissioning activities, including uncoupled motor runs,



equipment alignment, shaft rotation checks, lubrication, and vibration monitoring. Static & Rotating Equipment: Oversee the preparation and trial operation of rotating equipment (pumps, fans, blowers, compressors) and static equipment (vessels, heat exchangers, filters) to verify operational readiness.
System Walkdowns & Punch Listing: Lead multidisciplinary mechanical walkdowns identify, log, and manage punch list items to drive systems toward Mechanical Completion (MC) and Ready for Commissioning (RFC). Vendor & Sub-contractor Interface: Coordinate closely with Original Equipmen Manufacturer (OEM) vendor specialists and mechanical sub-contractors.
Safety & Permit-to-Work (PTW): Enforce strict site health and safety standards; raise and manage hot work, confined space entry, and mechanical isolation permits in line with project safety procedures. Documentation & Quality Sign-offs: Verify

📌 Commissioning mechanical supervisor (Santander)
🏢 Silverback
📍 Santander