Senior Mechanical Engineer

Senior / Principal Mechanical Building Services Engineer (Contract)

Looking to lead impactful building services projects across South Wales? A world-class engineering consultancy is seeking a Senior or Principal Mechanical Contract Engineer to join their growing team in Cardiff and Swansea. This is a 12-month contract offering long-term project stability, flexible/hybrid working, and a highly collaborative team environment.

• Role: Senior / Principal Mechanical Building Services Engineer
• Contract Duration: 12 Months (July 2026 – July 2027)

What You’ll Be Doing

• Technical Leadership: Lead mechanical specifications, equipment schedules, and complex HVAC (heating, cooling, ventilation) calculations.
• Project Delivery: Take ownership of project deliverables, manage project budgets, and oversee end-to-end design delivery.
• Client & Stakeholder Management: Lead client briefings, represent the business at meetings with contractors, and conduct site surveys/progress reviews.
• Digital Engineering: Produce detailed calculations using tools like IES, HEVACOMP, NBS, and Revit in collaboration with global technology centers.
• Mentorship: Assist in the growth and technical development of junior engineers in the team.

What We’re Looking For

• Education & Chartership: Degree in Building Services Engineering (or equivalent). CIBSE/IMechE Chartered status (or actively working towards it) is strongly preferred.
• Consultancy Experience: Proven track record working within a design consultancy or contractor design environment with deep knowledge of UK technical standards.
• Software Tools: Hands-on experience with IES, HEVACOMP, NBS, and Revit.
• Sustainability: CIBSE Low Carbon Consultant (LCC) qualification is highly desirable.

Why Apply?

Work with a globally recognized leader ranked among top UK employers, commitment to Net-Zero engineering, inclusive work culture, and clear opportunities to work on major regional infrastructure.