Mechanical Design Engineer - Building Services

📍 Southampton (Hybrid Working)
💼 Full-Time
💰 Competitive Salary + Bonus + Excellent Benefits

About the Role

An established and growing MEP consultancy on the South Coast is looking to appoint a Mechanical Design Engineer to join their friendly, technically focused team in Southampton.
Working on a broad range of building services projects across the healthcare, education, commercial, and research sectors, you'll be part of a collaborative, multi-disciplinary environment delivering technically sound, sustainable engineering solutions.
This is a great opportunity for someone with a few years of consultancy experience to step into more project ownership, supported by senior mentors and clear career progression.

What You'll Be Doing

Deliver mechanical building services designs including HVAC, ventilation, heating, cooling, and domestic water systems
Produce calculations, specifications, reports, and technical drawings using design tools and software
Coordinate designs with internal electrical, sustainability, and BIM teams
Contribute to sustainable and low-carbon strategies across mechanical systems
Attend client and design team meetings and contribute to technical discussions
Conduct site visits and surveys to gather technical data
Ensure designs meet current UK building regulations, CIBSE guides, and client requirements
Support more junior staff and work closely with senior engineers for project delivery

What You'll Bring

Degree or HND in Mechanical or Building Services Engineering (BEng, MEng, or equivalent)
2-5 years' experience in mechanical design within a building services consultancy
Proficient with mechanical design software (Hevacomp, IES, Revit, AutoCAD, etc.)
Understanding of HVAC systems, plantroom layouts, pipework, ductwork, and energy efficiency principles
Strong awareness of current UK regulations and CIBSE best practices
Excellent written and verbal communication skills
A proactive, organised, and detail-focused approach to your work
Ambition to develop professionally - working towards chartership is encouraged and supported

Why You'll Want to Join

Work with one of the South Coast's most respected independent consultancies
Hybrid and flexible working built around trust and autonomy
Broad project exposure from hospitals and schools to large-scale commercial and R&D buildings
Supportive leadership, collaborative culture, and structured career development
Full backing towards chartership (CEng)
Competitive salary and full benefits, including:

28 days annual leave + bank holidays
Discretionary bonus
Private healthcare & life insurance
Enhanced pension scheme
Cycle to work scheme
CPD support and training allowance

If you're looking for a supportive environment, varied project work, and a clear route to progress—this could be the perfect next step.
Apply now for a confidential conversation