Mechanical Design Engineer

  • TWG Consulting
  • 29/06/2026
Full time Construction

Job Description

Mechanical Design Engineer Healthcare Decarbonisation

Location: London (Hybrid 3 days office/site, 2 days home)
Salary: Up to £75,000 + Benefits

About the Role

We are looking for an experienced Mechanical Design Engineer to join a growing team delivering major healthcare decarbonisation projects across NHS estates. As the Mechanical Design Engineer, you will lead the design of low-carbon mechanical building services, supporting projects from feasibility through to commissioning and handover.

Working alongside multidisciplinary engineering teams, the Mechanical Design Engineer will play a key role in delivering heat pump installations, energy centres, district heating networks and mechanical infrastructure upgrades within live healthcare environments.

Key Responsibilities

  • Lead the mechanical design of healthcare decarbonisation projects.

  • Design HVAC, heat pump, LTHW/CHW, energy centre and district heating systems.

  • Produce technical calculations, specifications and Mechanical Design Engineer documentation.

  • Coordinate with electrical engineers, commercial teams and project delivery teams.

  • Support projects through all RIBA design stages.

  • Ensure all Mechanical Design Engineer solutions comply with NHS, HTM, CIBSE and industry standards.

  • Attend client, consultant and contractor meetings as the lead Mechanical Design Engineer.

  • Support commissioning and project handover.

Requirements

  • Degree in Mechanical Engineering or Building Services Engineering.

  • Proven experience as a Mechanical Design Engineer within M&E or building services projects.

  • Strong knowledge of heat pumps, HVAC, building services and low-carbon technologies.

  • Experience delivering Mechanical Design Engineer solutions within healthcare, commercial, public sector or critical infrastructure projects.

  • Familiarity with NHS healthcare environments is desirable.

  • Chartered or working towards Chartership (IMechE/CIBSE) preferred.

Ideal Background

  • Mechanical Design Engineer within a Building Services Consultancy

  • Mechanical Design Engineer for an M&E Contractor

  • Healthcare / NHS Projects

  • Energy & Decarbonisation

  • District Heating & Energy Infrastructure

Package

  • Up to £75,000 salary

  • Hybrid working

  • Competitive benefits

  • Excellent career progression

  • Opportunity to work on high-profile Net Zero healthcare projects