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Mechanical Design Engineer (Building Services)

PT Renewables
Cardiff · posted 19 August 2026
Salary
£45,000 – £55,000 a year
Job type
full time
Location
Cardiff, South Glamorgan
Category
Energy, Utilities, Oil and Gas

Mechanical Design Engineer – Building Services



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Cardiff


£45,000 – £55,000


Full-Time | Permanent


The Role

We’re looking for a Mechanical Design Engineer to join an established Building Services consultancy in Cardiff, working across a strong portfolio of commercial, industrial, education and public-sector projects.


This is an excellent opportunity for an Intermediate to Senior Engineer with a solid MEP background who wants to take ownership of mechanical designs from concept through to detailed design and delivery.


What You’ll Be Doing

  • Designing HVAC, heating, ventilation, air conditioning and public health systems
  • Producing mechanical calculations, specifications and technical reports
  • Developing and coordinating designs using Revit
  • Working closely with electrical, structural and architectural teams
  • Supporting projects from concept through to construction
  • Attending design meetings and liaising with clients and project teams
  • Ensuring designs meet current British Standards, regulations and client requirements


What We’re Looking For

  • Proven experience in Mechanical Building Services Design
  • Strong knowledge of HVAC and MEP systems
  • Confident using Revit within a building services environment
  • Experience with Hevacomp, MagiCAD, IES VE or similar design software
  • Strong understanding of mechanical calculations and system design
  • Consultancy or MEP experience
  • Degree, HND or equivalent in Mechanical / Building Services Engineering


Desirable

  • Working towards CIBSE / IMechE membership or professional accreditation
  • Experience across commercial, education, healthcare or industrial xwzovoh projects
  • Strong client-facing and communication skills


Why Join?

  • £45,000 – £55,000 salary
  • Work on varied and technically interesting building services projects
  • Join an established consultancy with a strong project pipeline
  • Excellent technical and professional development opportunities
  • Clear progression towards Senior / Principal Engineer
  • Support towards professional accreditation


If you’re a Mechanical Design Engineer with genuine Building Services experience and want to work on high-quality MEP projects, we’d like to hear from you.

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