Principal Mechanical Design Engineer - fully remote

Principal Mechanical Engineer

Fully Remote (UK)
£65,000 – £72,000 + Benefits

Are you an experienced Mechanical Engineer with a strong background in residential building services design, looking for the freedom and flexibility of a fully remote role?

A fast-growing and forward-thinking building services consultancy is seeking a Principal Mechanical Engineer to take a leading role in the delivery of a diverse and expanding portfolio of residential developments across the UK.

This is a senior position within the business, offering full ownership of project delivery from concept through to completion, with a focus on delivering innovative, sustainable, and commercially robust engineering solutions.

The Role

As Principal Mechanical Engineer, you will lead the mechanical discipline across a wide range of residential projects, acting as a key technical authority within the business. You will be responsible for ensuring design quality, driving project success, and supporting the continued development of the wider engineering team.

Key Responsibilities

• Lead the mechanical design and delivery of residential building services projects across all RIBA stages
• Take full ownership of projects from feasibility and concept design through to construction and handover
• Produce and review calculations, specifications, reports, and technical documentation
• Provide technical leadership, mentoring, and support to engineers across the team
• Develop and maintain strong relationships with clients, developers, architects, and contractors
• Act as a trusted technical advisor, ensuring high-quality and commercially sound outcomes
• Coordinate effectively with multidisciplinary design teams
• Promote sustainable, low-energy, and innovative engineering solutions
• Ensure projects are delivered on time, within budget, and to the highest technical standards

About You

We are looking for a confident, self-sufficient engineer with strong residential sector experience and the ability to lead projects independently in a remote environment.

You will ideally have:

• A degree in Mechanical Engineering, Building Services Engineering, or a related discipline
• Minimum 6 years’ experience within a building services consultancy
• Strong, demonstrable experience in residential project delivery (essential)
• Proven ability to lead projects and manage client relationships
• Strong technical knowledge of HVAC systems, mechanical design principles, and UK Building Regulations
• Excellent communication and stakeholder management skills
• A proactive, self-motivated approach suited to remote working
• Chartered status or working towards chartership (CIBSE, IMechE, IET or equivalent) desirable

What’s on Offer

• Fully remote working anywhere in the UK
• Genuine flexibility and autonomy – no office requirement
• Opportunity to join a rapidly growing and ambitious consultancy
• Lead delivery on a strong pipeline of residential projects nationwide
• Collaborative, quality-focused culture with strong technical support
• 26 days annual leave plus bank holidays
• Clear progression opportunities and long-term career development

Interested?

If you’re an experienced residential Mechanical Engineer looking for a Principal level role that is fully remote, we’d love to hear from you.

Please contact Callum via (url removed)