Senior Mechanical Engineer

We’re Hiring: Senior Mechanical Engineer (Rail & Infrastructure)

Contract: £450- £550 per day (Outside IR35)

London based

ASAP start

We are seeking a driven and motivated Senior Mechanical Engineer to join our Rail & Infrastructure Engineering team. In this key role, you will take charge of the design, coordination, and technical delivery of mechanical systems driving the HS2 programme .

Operating within a fast-paced, multidisciplinary MEICA environment, you will lead complex work packages across the entire project lifecycle—from initial concept and detailed design straight through to construction, testing, and commissioning.

The Role at a Glance

• Focus: Major rail infrastructure, station environments, tunnels, and complex mechanical assets.
• Environment: Collaboration with tier-1 contractors, clients, and multidisciplinary digital engineering (BIM) teams.
• Leadership: Driving technical excellence while mentoring a talented pool of graduate engineers and technicians.

Key Responsibilities

Mechanical Design & Technical Leadership

• Lead the design of complex HVAC, tunnel ventilation, environmental control, public health, drainage, and fire suppression systems.
• Prepare, review, and approve critical engineering deliverables including hydraulic calculations, ventilation data, equipment schedules, and technical specifications.
• Provide robust technical guidance, mentoring, and resource planning support to junior engineers and design technicians.

Coordination, BIM & Integration

• Interface seamlessly across electrical, controls, civil, structural, and architectural disciplines to deliver fully integrated solutions.
• Champion digital engineering delivery, ensuring designs are buildable, maintainable, and optimized within the BIM environment.

Design Assurance & Commissioning

• Ensure strict compliance with HS2 Technical Standards , Building Regulations, CIBSE Guidelines, and CDM Regulations 2015.
• Participate in interdisciplinary design reviews (IDC/IDR) and lead mechanical design risk assessments.
• Attend Factory Acceptance Tests (FAT) and Site Acceptance Tests (SAT), supporting the commissioning teams through to final handover.

What We Are Looking For

Essential Criteria

• Education: Degree in Mechanical Engineering, Building Services Engineering, or a related discipline.
• Experience: 5–10 years of mechanical engineering design experience within rail, infrastructure, transportation, utilities, or heavy building services.
• Technical Depth: Mastery of HVAC, ventilation/smoke control, pumping systems, and engineering assurance frameworks.
• Communication: Excellent stakeholder management skills with a proven track record of leading technical work packages.

Desirable Extras

• Prior project experience on HS2, Network Rail, London Underground , or Crossrail.
• Chartered Engineer (CEng) status, or actively working toward it.
• Membership in a professional institution (IMechE, CIBSE).
• Hands-on familiarity with digital tools: Revit MEP, Navisworks, Hevacomp, or IES VE .

Why Join Us?

This is more than a standard engineering job—it is an opportunity to shape a legacy infrastructure network. You will collaborate with industry-leading specialists, utilize advanced digital design platforms, and play a direct role in delivering energy-efficient, sustainable, and safe mechanical solutions for the next generation of rail travel.

Ready to Shape the Future?

If you are a highly motivated engineer ready to tackle complex technical interfaces and elevate your career, we want to hear from you.

Apply directly today or connect with our recruitment team to arrange a confidential discussion.

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