Mechanical Design Engineer

Mechanical Design Engineer – Building Services📍 Location: Southampton (Hybrid Working) | 💼 Full-Time | 💰 Competitive Salary + Bonus + Excellent Benefits

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Take Ownership of Mechanical Design on Diverse Projects

An established and growing MEP consultancy on the South Coast is seeking a Mechanical Design Engineer to join their friendly, technically focused team in Southampton. This is a fantastic opportunity for an engineer with a few years of consultancy experience to step into greater project ownership while being supported by senior mentors and a structured career development path.
You’ll work across healthcare, education, commercial, and research sectors, contributing to technically sound, sustainable building services solutions.

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Key Responsibilities

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

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Candidate Requirements

• Degree or HND/HNC in Mechanical or Building Services Engineering (BEng, MEng, or equivalent)
• 2–5 years’ experience in mechanical design within a building services consultancy
• Proficient in mechanical design software (Hevacomp, IES, Revit, AutoCAD, etc.)
• Strong understanding of HVAC systems, plantroom layouts, pipework, ductwork, and energy efficiency principles
• Knowledge of UK building regulations and CIBSE best practices
• Excellent communication skills, both written and verbal
• Proactive, organised, and detail-focused approach
• Ambitious and motivated to develop professionally – working towards chartership supported

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Why Join?

• Work with one of the South Coast’s most respected independent consultancies
• Hybrid and flexible working built around trust and autonomy
• Exposure to a broad range of projects—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 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

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If you’re a Mechanical Design Engineer looking for a supportive environment, diverse projects, and a clear path to progression, apply now for a confidential conversation.