Senior Mechanical Design Engineer

Pertemps; Eastleigh; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A leading building services consultancy is seeking a Senior Mechanical Design Engineer in Eastleigh. The successful candidate will lead innovative mechanical design projects across various sectors, including healthcare and education. Key responsibilities involve project leadership, mentoring engineers, and ensuring compliance with UK regulations. This role offers a hybrid working model, competitive salary, and opportunities for career progression.

Benefits

Competitive salary with bonus

Hybrid working model

Clear career progression

Qualifications

• 5+ years of consultancy-based experience in mechanical building services design.
• Strong technical knowledge of HVAC and building services systems.
• Proficiency with design software.

Responsibilities

• Lead the mechanical design process for building services.
• Produce and review design calculations and specifications.
• Mentor junior engineers and facilitate technical growth.

Skills

HVAC

Mechanical design

Leadership

Project management

Communication

Education

Degree in Mechanical Engineering or Building Services Engineering

Chartered Engineer or working towards chartership

Tools

Hevacomp

IES

Revit

AutoCAD

Job description

Senior Mechanical Design Engineer

Building Services Consultancy | Southampton Area (Hybrid)

The Opportunity

We’re representing a forward-thinking building services consultancy in Fareham that is looking for an experienced Senior Mechanical Design Engineer. This is a key role, leading the design and delivery of innovative, sustainable mechanical services across commercial, residential, education, and healthcare projects.

You’ll play a pivotal part in shaping design solutions, mentoring engineers, and working closely with clients and multidisciplinary teams to deliver projects from concept through to completion.

What You’ll Do

• Take ownership of the mechanical design process for building services (HVAC, heating, cooling, ventilation, domestic water systems).
• Produce and review design calculations, technical specifications, drawings, and reports.
• Coordinate effectively with clients, project teams, and other engineering disciplines.
• Mentor junior and intermediate engineers, fostering technical growth and best practices.
• Ensure all designs meet UK building regulations, CIBSE guidance, and sustainability standards.
• Actively contribute to client meetings, workshops, and design reviews.
• Support business development and help drive continuous improvement across the consultancy.

What We’re Looking For

• Degree in Mechanical Engineering or Building Services Engineering (BEng, MEng, or equivalent).
• Chartered Engineer (CEng) or working towards chartership (IMechE, CIBSE, or similar).
• At least 5+ years of consultancy-based experience in mechanical building services design.
• Strong technical knowledge of HVAC and building services systems.
• Proficiency with design software such as Hevacomp, IES, Revit, and AutoCAD.
• Excellent leadership, communication, and project management skills.
• Proven track record in managing complex projects and guiding design teams.

What’s on Offer

• Competitive salary with bonus and benefits package.
• Hybrid working model promoting flexibility and work-life balance.
• Clear career progression and support towards chartership.
• Exposure to varied and high-profile projects across multiple sectors.
• A collaborative, supportive, and innovative work environment.

Next Step

If you’re ready to take the lead on mechanical design projects and want to grow with a respected consultancy, we’d love to hear from you.

Apply now to start a confidential conversation.