Senior Mechanical Design Engineer

Pertemps; Winchester; On-site; GBP 50,000 - 65,000; Full time

Job summary

A leading building services consultancy seeks a Senior Mechanical Design Engineer to lead design projects ranging from healthcare to industrial developments. The role offers hybrid working and a variety of projects in a proactive team environment. Candidates should have a degree in engineering, chartered status, and extensive experience in mechanical design.

Benefits

Hybrid working

Healthcare plans

CPD-led training days

Social team events

Support for chartership

Qualifications

• 6+ years’ experience designing mechanical building services in consultancy.
• Proficiency in mechanical design software including TAS, AutoCAD, Revit, IES, Hevacomp.
• Strong understanding of UK regulations and sustainable engineering practices.

Responsibilities

• Lead HVAC, ventilation, heating, and cooling system design from feasibility to construction.
• Collaborate with multi-disciplinary teams to ensure energy-efficient solutions.
• Mentor junior engineers and contribute to internal QA reviews.

Skills

Leadership

Communication

Project Management

Education

Degree in Mechanical or Building Services Engineering (BEng/MEng or equivalent)

Chartered status (CEng, IMechE/CIBSE)

Tools

TAS

AutoCAD

Revit

IES

Hevacomp

Job description

Senior Mechanical Design Engineer – Building Services Consultancy

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


About the Role

A respected building services consultancy with 45 years of experience delivering sustainable, value-engineered solutions is seeking a Senior Mechanical Design Engineer to join their Winchester office. You’ll lead mechanical systems design across a broad range of projects—residential, commercial, healthcare, education, and industrial—on schemes from small-scale to £100m developments


Key Responsibilities

• Lead HVAC, ventilation, heating, cooling, and domestic water system design from feasibility through to construction
• Use TAS for dynamic thermal modelling and AutoCAD/Revit for detailed 2D/3D coordinated outputs
• Collaborate with multi-disciplinary teams, ensuring integrated low-carbon and energy-efficient solutions
• Mentor and guide junior engineers while contributing to internal QA reviews
• Provide specialist input into pre-planning energy/sustainability reports and PartL/F compliance assessments
• Visit sites to verify installation accuracy and support technical coordination
• Engage with clients and contractors throughout delivery and oversee value-engineering initiatives

What You’ll Bring

• Degree in Mechanical or Building Services Engineering (BEng/MEng or equivalent)
• Chartered status (CEng, IMechE/CIBSE) or actively working towards it
• 6+ years’ experience designing mechanical building services in consultancy
• Proficiency in mechanical design software including TAS, AutoCAD, Revit, IES, Hevacomp
• Strong understanding of UK regulations (PartL & PartF, CIBSE guidelines) and sustainable engineering practices
• Excellent leadership, communication, and project management abilities
• A proactive, structured mindset capable of delivering complex projects to high quality and budget standards

Why This Role Is Special

• Join a consultancy known for delivering sustainable, user-focused environments
• Variety of projects—ranging from healthcare and urban extensions to corporate and residential developments
• Operate within a proactive, structured team environment that values open communication and innovation
• Benefit from hybrid working, healthcare plans, CPD-led training days, and social team events
• Support for chartership and professional growth alongside exposure to advanced thermal modelling and sustainability tools

If you’re a senior mechanical engineer ready to take responsibility for complex design projects and contribute to a sustainability-first consultancy, this is your opportunity.

Apply now for a confidential discussion.