Senior / Principal Mechanical Building Services Engineer in Cheshire, Warrington

We're working with a growing integrated MEP and building physics consultancy with offices in Yorkshire and the North West. They deliver mechanical, electrical, and sustainability design across a broad range of sectors, residential, commercial, education, industrial, and retail – and they're looking for a Senior or Principal Mechanical Engineer to join their expanding team. This is a consultancy that does things properly. Design continuity runs all the way through to site, so you'll actually see your work get built – not hand it off at Stage 3 and move on. They have a real emphasis on buildability from the earliest design stages, and the business is fully digitally operational with Revit Coordinators working alongside the engineering team on every project.

At Senior level, you'll be taking ownership of mechanical design across a live and varied project portfolio, working closely with electrical engineers, building physics specialists, BIM coordinators, architects, and main contractors. At Principal level, you'll be doing all of that whilst also leading a small team, mentoring junior engineers, and playing an active role in client relationships. The Warrington office is going through an advanced period of growth, and this is a role where the right person will have genuine influence – on projects, on people, and on the direction of the team.

• Leading mechanical building services design across all RIBA stages, with particular focus on Stages 3–5
• Designing HVAC, heating, cooling, ventilation, and public health systems
• Carrying out heat loss/gain calculations, plant sizing, and system selection
• Preparing technical specifications, design reports, and construction issue drawings
• Overseeing and reviewing the work of junior and intermediate engineers
• Working in Revit alongside the BIM and coordination team
• Attending design team, client, and contractor meetings
• Managing relationships with architects, contractors, and specialist subcontractors
• Supporting site inspections and responding to technical queries during construction
• Contributing to fee proposals, scope reviews, and project programming (Principal level)

• HNC, HND, or degree in Mechanical Engineering, Building Services Engineering, or equivalent
• Previous mechanical building services consultancy experience at a similar level
• Ability to lead mechanical design on projects from inception to completion
• Strong technical knowledge across HVAC, heating, ventilation, and public health systems
• Proficiency in IES, Hevacomp, Trimble, or similar mechanical design software
• Experience working with Revit or AutoCAD in a BIM environment
• Chartered or working towards chartership with CIBSE or IMechE
• Ability to manage or mentor junior engineers
• An interest in low–carbon design, heat pump technology, and sustainable building performance

This is a team where people are trusted to get on with the job. There's no hierarchy for the sake of it – everyone has a voice, decisions are made collaboratively, and individuals are actively supported in developing their careers and building their own reputation in the market. You won't be passed from team to team as a project progresses. The same engineers who design it see it delivered, which means the work is taken seriously at every stage – and at Senior or Principal level, that continuity gives you real accountability and real visibility on the projects you lead.

• Competitive salary – 50,000 to 65,000 depending on experience and level
• 5% employer pension contribution
• Life assurance
• Generous annual leave entitlement
• Professional membership fees supported
• Funded training and CPD
• Hybrid and flexible working arrangements

Calibre Search promote equality in the workplace and we welcome applications from all suitably skilled or qualified candidates regardless of their sex, race, disability, religion/beliefs, sexual orientation or age. We act as both an employment agency and employment business.