Lead Mechanical Design Engineer – Decarbonisation and Energy

Astute People; London; On-site; GBP 80,000 - 90,000; Full time

Job summary

Astute People is seeking a Lead Mechanical Design Engineer for a leading facilities management company in London. The role involves leading design projects focused on decarbonisation, integrating low-carbon technologies, and mentoring a team of engineers. With a competitive salary up to £90,000 plus benefits, it's a great opportunity to influence sustainability initiatives and work on innovative energy solutions.

Benefits

Car allowance of £6,100

Bonus of up to 10%

Private medical insurance

Opportunity to work for a leading FM company

Qualifications

• At least 10 years of experience leading mechanical design and delivering retrofit and decarbonisation projects.
• In-depth technical knowledge of HVAC systems, heat pumps, and low-carbon technologies.
• Proficiency in energy modeling and design software.

Responsibilities

• Lead mechanical design across RIBA stages 2-4 and oversee technical delivery phases.
• Design and integrate low-carbon mechanical systems and ensure regulatory compliance.
• Mentor and develop a high-performing team of mechanical design engineers.

Skills

Leadership

Collaboration

Strategic Thinking

Energy Modelling

Technical Knowledge of HVAC Systems

Education

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

Chartered Engineer (CEng) status with CIBSE or IMechE

Tools

IES

Energy Pro

PVsol

Bluebeam

BIM/CAD platforms

Job description

Astute's Power team is partnering with a leading facilities management company to recruit a Lead Mechanical Design Engineer for its Decarbonisation and Energy division.

The Lead Mechanical Design Engineer role comes with a starting salary of up to 90,000 + car allowance + benefits package.

If you're a degree qualified Mechanical Design Engineer with experience working on decarbonisation projects and are looking for work then submit your CV to apply today.

Responsibilities and duties of the Lead Mechanical Design Engineer role

Reporting to the Engineering and Design Director you will:

• Lead mechanical design and engineering efforts across RIBA Stages 2–4, and provide technical oversight through project delivery phases (RIBA 5–7).
• Design and integrate low–carbon mechanical systems such as heat pumps, HVAC, BMS, and district heating solutions.
• Ensure regulatory and standards compliance, including CIBSE, PAS 2035, MCS, and UK Building Regulations.
• Lead BIM and CAD coordination to ensure effective integration with multidisciplinary teams.
• Develop and refine energy performance modelling tools for mechanical systems analysis and optimisation.
• Coordinate and manage multidisciplinary design integration, ensuring design continuity across mechanical, electrical, and energy systems.
• Mentor and develop a high–performing team of mechanical design engineers, encouraging continuous professional growth.
• Oversee funding application support (e.g. PSDS, GHNF, HNES), including technical input and compliance documentation.
• Support strategic procurement and supplier engagement, ensuring optimal mechanical solutions are selected for cost–efficiency and performance.

• Lead decarbonisation strategies and retrofit designs, aligning with clients' sustainability goals and funding requirements.

Professional qualifications
We are looking for someone with the following:

• A degree in Mechanical or Building Services Engineering (MEng/BEng or equivalent), providing a strong technical foundation.
• Chartered Engineer (CEng) status with CIBSE or IMechE (preferred), demonstrating professional recognition and expertise.
• At least 10 years of experience leading mechanical design and delivering retrofit and decarbonisation projects across various sectors.
• In–depth technical knowledge of HVAC systems, heat pumps, district energy systems, and low–carbon technologies, especially within retrofit environments.
• Proficiency in energy modelling and design software, such as IES, Energy Pro, PVsol, Bluebeam, and BIM/CAD platforms.
• A thorough understanding of UK industry standards and regulations, including CIBSE guidelines, PAS 2035, MCS certification, and relevant building regulations.
• Proven leadership and mentoring abilities, with experience managing design teams and coordinating across multidisciplinary functions.

Personal skills

The Lead Mechanical Design Engineer role would suit someone who is:

• Strategic Thinker – able to align project goals with policy, funding, and long–term decarbonisation roadmaps.
• Collaborative Leader – skilled in engaging cross–functional teams and empowering colleagues toward shared outcomes.
• Change–Oriented – drives innovation and continuous improvement within energy transition frameworks.

Salary and benefits of the Lead Mechanical Design Engineer role

• Starting salary of 80,000 – 90,000
• Car allowance of 6,100, bonus of up to 10% and private medical insurance
• Opportunity to work for a leading FM company

INDPOW

Astute People are acting as an employment agency in relation to this vacancy. We do not discriminate on the grounds of age, race, gender, disability, creed or sexual orientation and comply with all relevant UK legislation. We encourage applications from individuals from all backgrounds but candidates must be able to demonstrate their ability to work in the UK. Astute is also committed to the government's Disability Confident Employer initiative. We endeavour to get back to everyone, however, if you have not heard anything after 7 days, please consider your application unsuccessful.