Paris On-Site Hyperscale DC Commissioning Lead (Freelance)

Optimus Search Limited; Paris; On-site; EUR 129,000 - 203,000; Full time

Job summary

Optimus Search Limited is seeking an experienced Freelance Commissioning Manager to oversee the commissioning and handover of critical infrastructure on a hyperscale data centre project in Paris. You will manage the commissioning programme across mechanical and electrical systems, coordinating specialist contractors and ensuring successful testing and handover.

The role requires 8+ years in commissioning, strong technical knowledge of electrical and mechanical systems, and proven leadership to

Qualifications

• 8+ years' experience in commissioning.
• Experience managing commissioning on hyperscale data centre projects.
• Strong technical understanding of critical electrical and mechanical infrastructure.
• Experience managing Level 1–5 commissioning programmes.
• Coordinating MEP contractors, specialist vendors and commissioning teams.
• Strong understanding of energisation, functional performance testing and integrated systems testing.
• Excellent leadership, communication and stakeholder management skills.
• English essential; French advantageous.

Responsibilities

• Lead Level 1–5 commissioning activities across mechanical and electrical infrastructure.
• Develop and manage the commissioning execution plan, schedules, test procedures and handover strategy.
• Oversee commissioning of MV/LV switchgear, UPS, generators, transformers and critical power distribution.
• Coordinate commissioning of chilled water systems, cooling equipment, CRAH units, pumps and mechanical infra.
• Manage commissioning engineers, subcontractors and equipment vendors.
• Coordinate energisation readiness, start-up and functional performance testing.
• Oversee BMS and EPMS integration, controls verification and alarm testing.
• Lead Level 4 testing and Level 5 integrated systems testing including failure simulations.
• Monitor progress, resolve issues and manage defect close-out.
• Coordinate handovers and ensure documentation meets requirements.
• Report progress, risks and milestones to project leadership.

Skills

Commissioning

Project management

Stakeholder management

Leadership

MEP coordination

Electrical systems

Mechanical systems

Testing & energisation

English proficiency

Job description

Optimus Search Limited is seeking an experienced Freelance Commissioning Manager to oversee the commissioning and handover of critical infrastructure on a hyperscale data centre project in Paris. You will manage the commissioning programme across mechanical and electrical systems, coordinating specialist contractors and ensuring successful testing and handover.

The role requires 8+ years in commissioning, strong technical knowledge of electrical and mechanical systems, and proven leadership to