Mechanical (HVAC) Design Engineer

Cibsejournal; Greater London; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading engineering firm in Greater London is seeking a Mechanical (HVAC) Design Engineer to leverage AI and machine learning for decarbonisation. The ideal candidate has over three years of HVAC design experience and is passionate about energy efficiency and innovative solutions. Benefits include a tax-free annual bonus, ongoing training, and hybrid working options. This is an exciting opportunity to shape the future of building services through impactful design.

Benefits

Tax-free annual bonus (£3,600)

Ongoing training and development

25 days leave

Hybrid working (two days from home)

Option to work from abroad for up to one week

Uncapped profit share

Individual bonus

Direct access to key stakeholders

Matched pension to 4%

Payment of 1 x Professional Membership

Qualifications

• Minimum three years of experience in HVAC design.
• Knowledge of energy efficiency in existing buildings.
• Keen interest in automation and AI.

Responsibilities

• Design innovative heating and cooling solutions for clients.
• Work closely with clients to deliver projects on scope and budget.
• Collaborate with a motivated team focused on energy efficiency.

Skills

HVAC design experience

Interest in decarbonisation

Understanding of controls

Experience with heat pumps

Knowledge of heat recovery systems

Job description

Mechanical (HVAC) Design Engineer - Where Decarbonisation meets machine learning

Interested in using machine learning and AI to accelerate decarbonisation within the built environment?

Want to work for a firm that rewards you when you do well and isn't afraid to try new things?

As a recognised leader in decarbonisation projects for blue‑chip clients, this Mechanical Contractor continues to set new standards.

With around 140 employees across the UK, they provide a true turn‑key solution. Everything is delivered in-house, including design, installation, project management, commissioning, and maintenance, ensuring they have full control of quality and certainty of cost in every project.

The result?

A team that consistently delivers projects on scope, budget, and time, and rewards its employees with three separate bonus payments every year.

Due to planned growth, they are now looking for a client‑facing Mechanical (HVAC) Design Engineer for their London office. Someone with at least three years of experience in HVAC design and a keen interest in decarbonisation, automation, and AI.

Someone with experience in energy efficiency within existing buildings and a good understanding of controls, heat pumps, and heat recovery systems.

You'll design innovative heating and cooling solutions for major tech, media, leisure, and industrial clients across London and the Southeast.

You'll join a motivated, supportive, and forward‑thinking team that's setting new standards in energy efficiency and sustainable design.

Benefits

• Tax‑free annual bonus (£3,600)
• Ongoing training and development
• 25 days leave
• Hybrid working, two days a week from home
• Option of working from abroad for up to one week at a time.
• Uncapped profit share
• Individual bonus (in addition to the profit share described above)
• Direct access to the company founder, directors, and other key stakeholders.
• Matched pension to 4%
• Payment of 1 x Professional Membership.

This is a rare opportunity to combine your HVAC design experience with a passion for AI and machine learning to help accelerate decarbonization across the built environment.

Perfect for someone who thrives on delivering practical solutions and wants to help shape the future of building services through innovation and impact.