Principal Mechanical Engineer | Building Services

Principal Mechanical Engineer | Building Services
 
Thomas Search are partnered with a leading, forward-thinking Mutli - disciplinary consultancy to appoint a Principal Mechanical Design Engineer into their expanding South-East Building Consultancy team
This is an opportunity for a Principal Mechanical Building Services Engineer who wants to operate at the technical and professional core of project delivery.
 
You'll be joining an established MEP design team delivering work across a wide and balanced project portfolio, spanning residential, regeneration, healthcare, education, and commercial sectors. The role is design-led, client-facing, and suited to an engineer who is confident taking responsibility for outcomes, as well as a desire to lead projects, mentor junior members and ambition to succeed.
 
Working within a multi-disciplinary environment, you'll lead mechanical design packages, manage your own workload, and contribute to the successful delivery of projects from early concept through detailed design and construction support.
 
The role will involve:
 
Leading mechanical services design on building projects
Acting as lead engineer within design teams
Managing and coordinating internal disciplines on smaller schemes
Producing detailed designs, calculations, reports, drawings, and specifications
Using industry-standard tools such as Hevacomp, IES, CAD, and Revit
Undertaking QA reviews to ensure technical and regulatory compliance
Advising clients on energy efficiency, sustainability, and carbon reduction
Attending and contributing to client, design, and technical meetings
Mentoring and supporting junior engineers and apprentices

What we're looking for:

Strong background in mechanical building services design
Experience from a consultancy or technically focused contractor environment
Degree qualified (or equivalent: HNC/HND+)
Chartered Engineer (CEng) status
Confident communicator with a collaborative mindset
High technical standards and pride in quality delivery

This role offers technical autonomy, trusted client exposure, and progression within a supportive, well-structured engineering environment.
 
Interested?
 
Apply directly or reach out in confidence to David at (url removed) for a discreet and informative disclosure