Senior / Principal Mechanical Design Engineer

Overview

Senior to Principal Mechanical Design Engineer - Building Services

Southampton (Hybrid Working)
Full-Time
Highly Competitive Salary + Bonus + Benefits

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 generation 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.