Mechanical Design Engineer - MEP in Cirencester

We’re looking for a Building Services Design Engineer to join a well-established, full-service design and build contractor specialising in Mechanical, Electrical, and Public Health engineering. The company is based in Cirencester and offers an end-to-end service — from initial concept and design, through procurement and installation, to testing, commissioning, and long-term maintenance — with a strong emphasis on low-carbon and renewable energy solutions.

Joining this business means working for a firm with a proven national footprint — its project experience spans sectors such as commercial, industrial, hospitality, education, and residential. Unlike smaller consultancies, you’ll have the chance to be involved in real, large-scale projects, from feasibility right through to commissioning, while contributing to sustainable, low-carbon engineering innovation. The leadership team is seasoned: the Design Director is a Chartered building services engineer and Low Carbon Energy Assessor, with two decades of experience. Meanwhile, the firm is committed to staff development, offering both academic training and hands-on mentoring. There’s a strong company culture of care — both for quality of delivery and the environment. Their environmental policy reflects a commitment to energy efficiency, sustainability, and minimising waste.

What You’ll Be Doing

• Lead the design of HVAC and other building services systems, from concept through to delivery — including surveying, detailed design, commissioning, and site inspections.
• Take real ownership of projects (with support from the Project Director), integrating into a multi-disciplinary team.
• Work across a variety of sectors: commercial, retail, industrial, and residential.
• Collaborate with other MEP disciplines, ensuring design is coordinated and aligned with sustainability goals.
• Participate in design team meetings, coordinate with clients, and represent the technical team externally.
• Apply your knowledge of building regulations, particularly Part L, to deliver low-carbon, compliant systems.
• Use design software to produce working and as-built drawings, performance specifications, and energy calculations (e.g., AutoCAD, Revit, Hevacomp, OpenBuildings or similar).
• Produce and present energy analyses, lifecycle costing, and sustainability assessments.
• Help grow the business, bringing in new ideas and ambition for development and innovation.

Who You Are

• Chartered engineer, or qualified to HND / HNC level in Building Services Engineering, with post-qualification experience in UK construction.
• Strong track record designing HVAC or related systems for real-world buildings.
• Confident working in a “design and build” environment, with an understanding of the full project cycle.
• Solid grasp of other disciplines (MEP) and sustainability frameworks like BREEAM.
• Excellent communicator, with strong interpersonal and influencing skills — able to engage clients and internal teams.
• Competent in Microsoft Office (Word, Excel) and design tools (AutoCAD, preferably Revit).
• Familiar with low-carbon engineering and building regulations (especially Part L).
• Proactive, ambitious, and driven — you’re looking for a role where you can make a long-term impact and grow with the company.

What’s in It for You

• A supportive, growth-oriented working environment: the company really invests in its people.
• Meaningful, sustainable work: projects often include renewable and low-carbon systems.
• Exposure to a wide variety of sectors, giving you a diverse and challenging portfolio.
• The opportunity to grow professionally and influence both technical and commercial strategy.
• Based in Cirencester — a historic, vibrant Cotswold town, offering a strong quality of life and good connectivity.