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Mechanical Design Engineer (Building Services)

Hays Specialist Recruitment Limited

Cardiff · Posted 12 Oct 2026 · 16 applicants

£35,000 - £50,000 per annum
Permanent
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Your new company
Hays Building Services are working with a well-established engineering consultancy in Cardiff that is looking to appoint a talented Mechanical Design Engineer to join its growing team.This is an excellent opportunity to become involved in the design and delivery of a diverse range of projects across the commercial, healthcare, education, residential, industrial and public sectors. You'll work alongside experienced engineers and project leaders in a collaborative environment, helping to deliver innovative and sustainable building services solutions.
Your new role

  • Designing mechanical building services systems including HVAC, ventilation, heating, cooling and domestic water services.
  • Producing technical calculations, specifications and reports.
  • Developing designs using industry-standard software including Revit and AutoCAD.
  • Working closely with electrical, public health and sustainability engineers to deliver coordinated designs.
  • Attending client and design team meetings.
  • Supporting projects from concept through to completion.
  • Ensuring designs comply with relevant regulations and industry standards.

What you'll need to succeed

  • Experience working within a UK building services consultancy environment.
  • Knowledge of mechanical building services design principles and current regulations.
  • Experience using design software such as Revit, AutoCAD, IES, Hevacomp or similar.
  • Strong communication and collaboration skills.
  • HNC/HND or Degree qualification in Building Services Engineering, Mechanical Engineering or a related discipline.
  • A desire to progress your career towards Senior Engineer and Chartered status.

What you'll get in return

  • Competitive salary package.
  • Hybrid and flexible working arrangements.
  • Ongoing professional development and chartership support.
  • Exposure to high-profile and technically challenging projects.
  • Clear opportunities for career progression.
  • Generous holiday allowance and company benefits package.

What you need to do now
If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now.
If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at hays.co.uk

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