Senior Mechanical Engineer

L.J.B & Co. Construction Recruitment; Greater London; On-site; GBP 90,000 - 100,000; Full time

Job summary

A leading construction recruitment firm is seeking a Senior Mechanical Engineer for a significant 40MW data centre project in Greater London. The ideal candidate will take ownership of key mechanical packages, coordinate with subcontractors, and manage BIM development. This role offers a competitive salary of £90,000 - £100,000, and the chance to work under supportive engineering leadership with opportunities for career progression into lead roles. Data centre experience is a plus but not required.

Benefits

Progression into Lead Engineer roles

Supportive engineering leadership team

Exposure to advanced prefab, BIM, and commissioning processes

Qualifications

• 5+ years in mechanical engineering within large-scale construction.
• Data centre experience preferred but not mandatory.
• Strong background on major new-build projects.

Responsibilities

• Own multiple major mechanical packages.
• Produce and manage Technical Submittals.
• Coordinate with subcontractors and monitor progress.
• Assist in developing prefabricated pipework modules.
• Manage offsite manufacturing and delivery logistics.
• Work closely with BIM specialists.

Skills

Technical Submittals

BIM Development

Coordination with subcontractors

Mechanical packages management

Quality Assurance

Education

5+ years in mechanical engineering

Job description

Senior Mechanical Engineer - 40MW Data Centre Project (UK)

Salary: £90,000 - £100,000 + Package
Type: Full-Time, Site-Based
Sector: Hyperscale Data Centres / Mission-Critical
Start: ASAP

A leading international MEP contractor delivering high value hyperscale data centre projects is seeking a Senior Mechanical Engineer to join the team on a major 40MW facility. This company is known for engineering excellence, advanced prefabrication methods, and consistent delivery across Europe.

This role sits directly under the Lead Engineer, taking ownership of key mechanical packages, supply chain coordination, BIM development, prefabrication strategies, and commissioning support.

If you want to step into a high-impact technical leadership role on a flagship project, this is the opportunity.

Role Overview

• Take ownership of multiple major mechanical packages (chillers, adiabatic coolers, pumps, heat exchangers, CRAHs, pipework, etc.).
• Produce and manage Technical Submittals and ensure suppliers deliver to programme.
• Coordinate with subcontractors, monitor progress, and drive deadlines.
• Assist in developing prefabricated pipework modules and skids.
• Manage offsite manufacturing, delivery logistics, and QA.
• Prefab experience preferred but not essential.
• Work closely with BIM specialists, providing technical information, mark-ups, reviews, and issue resolution.
• Participate in BIM workshops and ensure the model reflects accurate mechanical design intent.
• Attend FATs for major equipment to ensure compliance with specs and performance expectations.
• Drive mechanical system readiness, QA signoffs, and handover documentation.
• Support commissioning phases under guidance of the commissioning manager.
• 5+ years in mechanical engineering within large-scale construction.
• Data centre experience preferred but not mandatory.
• Strong background on major new-build projects (commercial, pharma, industrial, healthcare, municipal).
• Confident managing multiple high-value mechanical packages.

What's on Offer

• Work on a 40MW hyperscale data centre
• Supportive engineering leadership team
• Progression into Lead Engineer roles
• Exposure to advanced prefab, BIM, and commissioning processes