Job Description

Mechanical Design Engineer - Building Services? Location: Southampton (Hybrid Working) | ? Full-Time | ? Competitive Salary + Bonus + Excellent Benefits
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.
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

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

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

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.

Skills Required