Lead Mechanical Design Engineer (Decarbonisation & Energy Solutions)

TN United Kingdom; United Kingdom; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading energy services company is seeking a Lead Mechanical Design Engineer specializing in decarbonisation and energy solutions. This permanent, full-time role based in London involves leading design projects, managing teams, and ensuring compliance with industry standards. The ideal candidate will have a strong background in mechanical design, HVAC, and energy systems, with a focus on sustainability and innovation. The position offers a competitive salary and an extensive benefits package, including generous leave and professional development opportunities.

Benefits

25 days annual leave (+ public holidays)

Life Cover (3x annual salary)

Employee discount schemes

Cycle to work scheme

CSR days

Learning opportunities and training

Employee Referral Rewards

Employee Assistance Program and mental wellbeing support

Qualifications

• Proven leadership in mechanical design and decarbonisation initiatives.
• Extensive project experience in retrofit and decarbonisation.

Responsibilities

• Leading mechanical design and engineering solutions across RIBA Stages 2-4.
• Managing designs and supporting project lifecycle delivery.
• Conducting risk assessments and design reviews.

Skills

Leadership

Decarbonisation

HVAC

Risk Assessment

Energy Modelling

Education

Degree in Mechanical or Building Services Engineering

Chartered Engineer (CEng)

Tools

IES

Energy Pro

PVsol

Job description

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Lead Mechanical Design Engineer (Decarbonisation & Energy Solutions), Royaume-Uni

Client: EQUANS

Location: Royaume-Uni, United Kingdom

Job Category: -

EU work permit required: Yes

Job Reference: 61296a2f9dca

Job Views: 3

Posted: 14.05.2025

Expiry Date: 28.06.2025

Job Description:

EQUANS is looking for a Lead Mechanical Design Engineer (Decarbonisation & Energy Solutions) to join our team in London on a permanent basis. This is a full-time role working Monday to Friday. On offer is a competitive salary and benefits package.

The Lead Mechanical Design Engineer plays a key role in the design, development, and optimisation of mechanical systems in decarbonisation and energy efficiency projects, principally sustainable retrofits. This role involves working across RIBA Stages 2-7, managing mechanical and energy systems design, including heat pumps, HVAC, and intermediate to complex ECMs (Energy Conservation Measures).

The position requires expertise in design management, technical leadership, and retrofit strategies, ensuring compliance with industry standards, regulatory frameworks, and funding requirements. The role also includes developing and leading a team of design engineers to support project delivery from concept to implementation.

Responsibilities include:

• Leading mechanical design and engineering solutions across RIBA Stages 2-4, providing ongoing technical support across RIBA 5 to 7, ensuring technical excellence and commercial viability.
• Designing and integrating low-carbon energy solutions, including heat pumps, district heating, HVAC, and energy-efficient BMS.
• Developing modelling tools to analyse mechanical system performance and identify improvement opportunities.
• Ensuring compliance with CIBSE guidelines, PAS, MCS standards, and UK building regulations.
• Leading BIM implementation within mechanical designs, ensuring compliance with industry standards and seamless integration.
• Overseeing CAD model development and coordination, ensuring compatibility with multidisciplinary teams.

Design Management & Team Development:

• Leading design coordination and management, integrating mechanical, electrical, and energy systems for seamless project execution.
• Leading technical reviews in support of tendering and project teams.
• Developing and mentoring a team of design engineers, fostering technical expertise and continuous improvement.
• Facilitating collaborative design workshops to enhance interdisciplinary coordination and innovation.
• Ensuring best practices in design management, aligning with sustainability, compliance, and operational efficiency.

Project Delivery & Risk Management:

• Managing designs and supporting project lifecycle delivery to ensure projects are delivered on time and within budget.
• Conducting risk assessments and design reviews, ensuring solutions meet safety and regulatory standards.
• Supporting supplier negotiations and procurement strategies for optimal system selection and cost efficiency.
• Assisting clients and internal teams with planning applications, heritage constraints, and technical due diligence.

Technical Leadership & Retrofit Strategy:

• Engaging with stakeholders at all levels, presenting technical concepts clearly and strategically.
• Leading retrofit design processes, ensuring alignment with decarbonisation goals and funding criteria.
• Providing strategic oversight on complex ECMs, ensuring integration, efficiency, and compliance.
• Developing measurement & verification (M&V) strategies in line with IPMVP methodologies, where applicable.

Decarbonisation Strategy and Consultancy:

• Leading decarbonisation project planning for public and private sector clients, including local authorities, social housing, healthcare, and commercial organisations.
• Conducting technical and financial feasibility assessments for low-carbon technologies.
• Guiding funding applications (e.g., PSDS, Warmer Homes, GHNF, HNES), ensuring compliance and success.

Funding & Commercial Viability:

• Developing business cases and financial models to secure project funding.
• Conducting techno-economic assessments of mechanical solutions.
• Staying updated with regulatory changes impacting heat decarbonisation and funding eligibility.

What we offer:

Competitive salary and benefits, including:

• 25 days annual leave (+ public holidays)
• Life Cover (3x annual salary)
• Employee discount schemes
• Cycle to work scheme
• CSR days
• Learning opportunities and training
• Employee Referral Rewards
• Employee networks (WiE, RISE, LGBTQI+, etc.)
• Employee Assistance Program and mental wellbeing support

Who are we looking for?

Experience:

• Proven leadership in mechanical design and decarbonisation initiatives.
• Experience with building energy systems, heat networks, and low-carbon infrastructure.
• Expertise in HVAC design, risk assessment, and project delivery.
• Knowledge of energy modelling software (IES, Energy Pro, PVsol, etc.).

Qualifications:

• Degree in Mechanical or Building Services Engineering.
• Chartered Engineer (CEng) preferred.
• Extensive project experience in retrofit and decarbonisation.
• Retrofit Designer Certification is highly desirable.

About us:

EQUANS is a global energy services leader with nearly 50,000 employees in over 50 countries, with an annual turnover of over €17 billion. In the UK & Ireland, we provide technical, FM, regeneration, and energy services, specializing in smart buildings, green mobility, district & embedded energy, and decentralised renewables. We are committed to supporting the energy transition towards net zero and digital transformation. EQUANS is part of the Bouygues group.

Next steps:

If interested, please register, apply, and track your application. Our Resourcing Team will review and contact you.

We value diversity and inclusion, fostering a supportive environment where everyone can be their true selves. Join us to be part of a welcoming workplace with active employee networks.

Note: You must have the right to work in the UK. No relocation package is offered. Some roles may require a Disclosure check. All inquiries should go to the Resourcing Team, not direct to managers.