Mechanical Engineering Principal Lead

Capgemini; Telford; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Capgemini seeks a Mechanical Engineering Principal Lead / Decarbonisation Lead to drive heat decarbonisation programmes across industrial and infrastructure projects. You will act as the technical authority, leading the design and delivery of low‑carbon heating and thermal energy solutions to improve energy efficiency and reduce carbon emissions.

You will guide multidisciplinary teams, advance technical standards, and mentor engineers while delivering sustainable engineering outcomes across full

Qualifications

• Requires degree qualification in mechanical/thermal/energy engineering with significant heat decarbonisation experience.
• Should have strong understanding of complete project lifecycle from feasibility to detailed design.
• Chartered Engineer status is desirable but not mandatory.

Responsibilities

• Lead heat decarbonisation strategies for industrial and infrastructure projects.
• Oversee design and delivery of low‑carbon heating systems including ASHPs and LTHW networks.
• Deliver thermal modelling, energy assessments, and feasibility studies to identify decarbonisation opportunities.
• Provide technical leadership for mechanical engineering standards, design reviews, risk assessments, and HAZOPs.
• Collaborate with clients, stakeholders, and multidisciplinary teams to deliver integrated energy solutions.
• Mentor engineers and drive innovation, continuous improvement, and carbon reduction initiatives.

Skills

Heat decarbonisation

Energy efficiency

HVAC

Heat pumps

Thermal modelling

Energy performance analysis

Stakeholder management

Leadership

Mentoring

Education

Degree in Mechanical / Thermal / Energy Engineering

Chartered Engineer (CEng) desirable

Job description

Your role

We're looking for a Mechanical Engineering Principal Lead / Decarbonisation Lead to drive heat decarbonisation programmes across industrial and infrastructure projects. As the technical authority, you'll lead the design and delivery of low‑carbon heating and thermal energy solutions, working closely with clients and multidisciplinary teams to improve energy efficiency, reduce carbon emissions, and deliver sustainable engineering outcomes.

• Lead heat decarbonisation strategies for industrial and manufacturing facilities.
• Oversee the design and delivery of low‑carbon heating systems, including ASHPs and LTHW networks.
• Deliver thermal modelling, energy assessments, and feasibility studies to identify decarbonisation opportunities.
• Provide technical leadership for mechanical engineering standards, design reviews, risk assessments, and HAZOPs.
• Collaborate with clients, stakeholders, and multidisciplinary teams to deliver integrated energy solutions.
• Mentor engineers and drive innovation, continuous improvement, and carbon reduction initiatives.

Your profile

You'll be a degree‑qualified Mechanical, Thermal, or Energy Engineer with significant experience delivering heat decarbonisation, energy optimisation, and low‑carbon infrastructure projects. With a strong understanding of the full project lifecycle, from feasibility and energy audits through to detailed design, you'll bring deep technical expertise in thermal systems, HVAC, heat pumps, and energy performance. You'll also be a confident leader, capable of managing stakeholders, leading multidisciplinary teams, and driving successful project delivery.

What We're Looking For

• Proven experience delivering large‑scale heat decarbonisation and energy efficiency programmes, including RIBA Stage 3 and 4 design projects.
• Strong knowledge of HVAC, heat pumps, thermal energy storage, heat recovery technologies, thermal modelling, and energy performance analysis.
• Experience leading design reviews, HAZOP studies, and engineering risk management activities.
• Degree qualified in a relevant engineering discipline, with Chartered Engineer (CEng) status desirable.
• Excellent stakeholder management, leadership, mentoring, and communication skills.

Make it real - what does it mean for you?

• Open access to digital learning platforms
• Active employee networks promoting diversity, equity and inclusion like OutFront, CapAbility or Women@Capgemini

Capgemini is proud to be a Disability Confident Employer (Level 2)

• Declare they have a disability
• Meet the minimum essential criteria for the role.
• Please opt in during the application process.

Need to know

• All roles will require a level of security clearance; BPSS OR Security Clearance OR Developed Vetting.
• You can bring your whole self to work. At Capgemini building an inclusive future is part of everyday life and will be part of your working reality. We have built a representative and welcoming environment, for everyone.
• The role will be Broughton based – 2/3 days a week in office.