Mechanical Design Engineer (HVAC/Building Services)

At a glance

Job information

  • Location: Watlington, Oxfordshire
  • Job type: Permanent
  • Job sector: Engineering, Engineering Graduates & Trainees
  • Salary: £45000 - £60000 per annum + Profit Share Scheme + Extensive Traini
  • Published: 28 April 2026

Mechanical Design Engineer (Building Services / HVAC)

Watlington

£45,000 – £60,000 + Profit Share Scheme + Training + Progression

Are you a Mechanical Design Engineer with a few years’ experience looking to take the next step in your career within a growing and forward-thinking business?

Do you want to join a company that offers structured development, ongoing training, and clear progression routes, while giving you greater responsibility across a wide range of Building Services/HVAC projects?

On offer is the opportunity to join a rapidly expanding company that places a strong emphasis on professional development and internal progression. You will continue to build on your existing design experience while gaining further exposure to the full project lifecycle-from client engagement and concept design through to detailed calculations, system design, and equipment selection.

In this varied role, you will take a more active role in project delivery, working on multiple projects across Building Services/HVAC. You will be responsible for producing design work, carrying out calculations, and supporting equipment selection, while collaborating closely with senior engineers and mentoring more junior team members where appropriate.

This role would suit a Mechanical Design Engineer with experience in Building Services, HVAC, MEP, or similar, who is looking to develop their technical expertise and progress within a supportive and fast-growing company.

The Role:

  • Contribute to the full project lifecycle from concept through to completion
  • Produce design calculations and technical drawings
  • Assist with and review equipment selection and system design
  • Work across multiple Building Services/HVAC projects
  • Collaborate with senior engineers and wider project teams
  • Support and mentor junior/graduate engineers where appropriate

The Person:

  • Mechanical Design Engineer with 2-5 years’ experience (or similar)
  • Background in Building Services, HVAC, MEP, or related field
  • Experience using CAD software (e.g. AutoCAD, Revit MEP, SolidWorks)
  • Good understanding of design calculations and engineering principles
  • Degree/HND in Mechanical Engineering or related discipline
  • Strong communication skills and a proactive approach to development

Reference Number: BBBH25013H

Keywords: Mechanical Design Engineer, Intermediate Design Engineer, Building Services, HVAC Design, MEP Engineering, AutoCAD, Revit MEP, SolidWorks, 2D & 3D CAD, Engineering Design, HVAC Systems, Ventilation, Heating Systems, Cooling Systems, Mechanical Services, BIM, Sustainability, Energy Efficiency, Design Calculations, Equipment Selection, Project Lifecycle, Technical Drawings, Mechanical Engineering Jobs, Watlington Jobs

If you’re interested in this role, click ‘apply now’ to forward an up-to-date copy of your CV, or call us now.

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