Senior / Principal Mechanical Design Engineer
New Today
Senior to Principal Mechanical Design Engineer – Building Services
Southampton (Hybrid Working)
Full-Time
Highly Competitive Salary + Bonus + Benefits
About the Role
A leading independent building services consultancy on the South Coast is seeking a Senior to Principal Mechanical Design Engineer to join their growing team in Southampton. Known for their technical strength, sustainable approach, and long-term client relationships, this firm delivers a broad range of projects across the healthcare, education, research, commercial, and industrial sectors.
This role is ideal for an experienced engineer ready to lead projects, manage teams, and play an integral part in delivering innovative and low-carbon mechanical building services solutions.
What You’ll Be Doing
Lead mechanical design on a range of complex projects, from early-stage feasibility to technical delivery and handover
Take ownership of project outputs including reports, calculations, technical specifications, and coordinated drawings
Collaborate closely with multidisciplinary teams including electrical, sustainability, and BIM engineers
Represent the consultancy in client, design team, and contractor meetings
Provide mentorship and technical oversight to junior and intermediate engineers
Deliver solutions that incorporate sustainable and renewable technologies, complying with relevant legislation and environmental targets
Oversee resource planning, programme delivery, commercial aspects, and QA compliance on your projects
Contribute to technical standards, internal knowledge sharing, and continuous improvement across the team
What You’ll Bring
Degree qualified in Mechanical or Building Services Engineering (BEng, MEng, or equivalent)
Typically 7+ years of experience in mechanical building services design
In-depth knowledge of HVAC, public health systems, plant room layout, and system integration
Experience using mechanical design tools (Hevacomp, IES, Revit, AutoCAD, etc.)
Up-to-date understanding of UK building regulations, CIBSE standards, and sustainability drivers
Chartered or working towards CEng status with CIBSE or IMechE
A track record of leading design teams and delivering high-quality projects
Confident communicator with a client-focused mindset and excellent coordination skills
Comfortable balancing design detail with project management responsibilities
Why You’ll Want to Join
Work with one of the region’s most established independent MEP consultancies
Flexible and hybrid working arrangements that promote a healthy work-life balance
Diverse project exposure across hospitals, education campuses, science labs, and heritage refurbishments
Clear progression routes toward Associate/Director level roles
Attractive benefits package, including:
28 days’ annual leave + bank holidays
Annual performance bonus
Private medical cover & life insurance
Enhanced pension scheme
Cycle to work scheme
Annual training allowance and full support to achieve chartership
Supportive, people-first culture focused on long-term success and technical excellence
Looking to lead high-impact projects and mentor the next of engineers?
This is an ideal opportunity for a Senior or Principal Mechanical Engineer ready to make a meaningful step in their career.
Apply now for a confidential chat
- Location:
- Southampton
- Job Type:
- FullTime
- Category:
- Design Engineer, Engineer, Senior, Mechanical Design Engineer, Engineering, Design, Mechanical