Mechanical Design Engineer

WR HVAC; England; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A long-established mechanical services contractor in the United Kingdom seeks an Intermediate Mechanical Design Engineer. This role offers a 3-month contract-to-perm opportunity, focusing on delivering mechanical designs for HVAC systems. You will produce detailed designs, ensure compliance with regulations, and coordinate with project teams. The position offers a daily rate of £200-£300 based on experience, with hybrid working options and additional benefits such as a mileage allowance and equipment provision.

Benefits

Paid mileage allowance

Laptop and phone provided

Flexible working environment

Qualifications

• Proven mechanical design experience within the building services sector.
• Strong understanding of HVAC systems including AC, AHUs, chillers and boilers.
• Proficiency with design/calculation software (e.g., IES or similar).
• Good technical knowledge of UK regulations and standards.

Responsibilities

• Produce detailed mechanical services designs, calculations, thermal modelling and equipment specifications.
• Coordinate with internal designers, project managers and external consultants.
• Support design development from concept through to construction stage.
• Ensure compliance with UK building regulations, industry standards and sustainability objectives.

Skills

Mechanical design experience

Understanding of HVAC systems

Proficiency in design/calculation software

Ability to coordinate with teams

Tools

IES software or similar

Job description

Intermediate Mechanical Design Engineer – HVAC / Building Services

Contract–to–Perm 3–Month Initial Contract Hybrid (Surrey Office)

The Company

A long–established mechanical services contractor with over 40 years' experience is seeking an Intermediate Mechanical Design Engineer to join their expanding design team. The business is recognised for its technical capability, supportive culture and varied commercial workload across refurbishments and fit–outs.

The Role

You will be responsible for delivering mechanical building services designs across systems such as boilers, chillers, AHUs and air–conditioning. Working within a collaborative team, you'll contribute from early concept through detailed design and construction support, ensuring compliance, performance and seamless integration across each project.

Key Responsibilities

• Produce detailed mechanical services designs, calculations, thermal modelling and equipment specifications
• Coordinate with internal designers, project managers and external consultants
• Support design development from concept through to construction stage
• Ensure compliance with UK building regulations, industry standards and sustainability objectives (energy efficiency, low carbon performance)

Package / Contract Details

• Contract–to–Perm role – 3‑month initial contract
• 200– 300 per day (depending on experience)
• Hybrid working – based from the Surrey office with flexibility
• Paid mileage allowance
• Laptop and phone provided
• Opportunity to join a respected contractor with a strong technical reputation

Requirements

• Proven mechanical design experience within the building services sector
• Strong understanding of HVAC systems including AC, AHUs, chillers and boilers
• Proficiency with design/calculation software (e.g., IES or similar)
• Good technical knowledge of UK regulations and standards
• Ability to coordinate with design, project and site teams

If your experience matches please forward your CV immediately. WR Ltd is acting as an Employment Agency in relation to this vacancy.