Principal Mechanical Design Engineer
CV-LibraryCity of Westminster, Greater LondonpermanentPosted: 13 October 2026
Apply NowPrincipal 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
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