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Principal Mechanical Design Engineer

Job in City of Westminster, Central London, Greater London, England, UK
Listing for: 12 Recruitment Ltd
Full Time position
Listed on 2026-10-13
Job specializations:
  • Engineering
    Mechanical Engineer, Building Services Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 90000 GBP Yearly GBP 80000.00 90000.00 YEAR
Job Description & How to Apply Below
Location: City of Westminster

Principal Mechanical MEP Design Engineer

Location:

London
Salary: £85,000
Progression:
Associate / Director-level opportunities

Lead mechanical design on challenging, bespoke projects within a growing London consultancy, with the opportunity to develop a team, influence project delivery and progress into senior leadership.

We are working with a London-based building services consultancy looking to appoint a Principal Mechanical Design Engineer. This is an opportunity for an experienced engineer to take technical ownership of complex projects, support junior team members and play a key role in the continued development of the business.

The Role

* Lead mechanical building services design across a range of complex, one-off projects.

* Take responsibility for projects from concept through to detailed design and delivery.

* Provide technical leadership and oversee design quality.

* Manage, mentor and develop engineers within the team.

* Coordinate mechanical designs with electrical, structural and architectural disciplines.

* Attend client meetings and develop strong working relationships.

* Support project delivery, technical reviews and design coordination.

* Contribute to the development of engineering standards and working practices.

* Help drive the growth and technical capability of the consultancy.

Requirements

* Extensive experience in mechanical building services design.

* Strong knowledge of HVAC, ventilation, heating and cooling systems.

* Experience leading projects and taking ownership of technical delivery.

* Ability to manage, mentor and support other engineers.

* Strong understanding of relevant building services standards and regulations.

* Confident working with clients and multidisciplinary project teams.

* Experience delivering technically challenging or bespoke projects.

* Degree-qualified in Mechanical Engineering or Building Services Engineering, or equivalent experience.

* Chartered status, or working towards chartership, would be advantageous.

The Opportunity

* Salary of £85,000.

* A clear progression route into Associate and potentially Director-level leadership.

* The opportunity to lead and develop a small team.

* Exposure to challenging, bespoke building services projects.

* A senior role offering genuine influence over technical delivery and business development.

Please note:

Candidates must already have the right to work in the UK. Visa sponsorship cannot be offered
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