Principal Mechanical Design Engineer
London 70,000 + Car Allowance + Travel Paid Major Projects Building Services
A leading MEP contractor is seeking a Principal Mechanical Design Engineer to join a well-established and growing electrical design team in London. This is a senior technical appointment within a delivery-focused, contractor-led environment operating across some of the UK's most complex building services projects.
The design team consists of approximately 25 engineers, supported by a strong secured pipeline of work providing at least two years of forward workload visibility.
The Opportunity
You will take a leading role in delivering electrical design across multiple high-value projects through RIBA Stages 1-5, combining technical leadership, coordination, and hands-on design oversight.
The current workload includes a major hyperscale data centre development ( 400m+ core project value), forming a flagship scheme within the business, alongside a strong portfolio of complex commercial, institutional, and mixed-use developments across London.
Live and upcoming project portfolio includes:
- Large-scale urban redevelopment scheme within a key central London regeneration zone, involving multiple mixed-use assets
- Over-site development above major transport infrastructure in a prime central London location
- High-profile commercial development at a major central London address
- Significant works at a nationally recognised cultural institution involving sensitive refurbishment and infrastructure upgrade
- Major capital programme within a leading UK higher education campus involving phased redevelopment and expansion works
- Hyperscale data centre programme with mission-critical electrical infrastructure and high resilience requirements
Key Responsibilities
- Lead Mechanical design delivery across multiple concurrent major projects
- Manage design development from early concept through detailed design and construction stages (RIBA 1-5)
- Provide technical leadership, mentoring.
- Coordinate with internal disciplines, clients, and external consultants
- Support delivery of mission-critical and large-scale infrastructure environments
- Ensure compliance with relevant UK regulations, standards, and client requirements
- Contribute to design optimisation, value engineering, and technical innovation
Package
- Circa 70,000 basic salary
- Car allowance
- All travel expenses covered
- Strong forward workload (2+ years secured pipeline)
- Exposure to landmark UK developments and major infrastructure schemes
- Long-term progression within a growing and stable design team
About You
- Mechanical Engineer with strong building services design experience
- Proven experience delivering projects through RIBA Stages 1-5
- Background in consultancy or contractor design environment
- Experience working on large-scale commercial, infrastructure, or mission-critical projects
- Data centre experience highly advantageous
- Strong leadership, coordination, and stakeholder management skills
Principal Mechanical Design Engineer – Building Services employer: CIBSE Journal
Join a forward-thinking company that prioritises innovation and sustainability in the renewable energy sector. As an Electrical Design Engineer, you'll benefit from a collaborative work culture that encourages professional growth through continuous learning and development opportunities. With a hybrid working model and the chance to contribute to impactful utility-scale projects, this role offers a rewarding career path in a dynamic environment.
