Senior Thermal Engineer

Your Role

• Lead thermal design and analysis activities for spacecraft subsystems and components.
• Develop and validate thermal models using ESATAN-TMS.
• Define thermal control strategies including passive and active systems (e.g., MLI, heat pipes, radiators, heaters).
• Support thermal testing activities from component-level through full spacecraft assembly.
• Support thermal environmental qualification testing (TVAC), including test planning and data review.
• Support proposal development and technical reviews (PDR, CDR, TRR).
• Ensure compliance with mission requirements, standards, and customer specifications.
• Collaborate with cross functional teams, including avionics, mechanical, propulsion, and systems engineering teams to ensure seamless integration.
• Manage and provide mentorship to junior engineers and foster technical excellence across the team.
• Responsible for maintaining documentation, including design specifications, test plans, performance reports and ICDs.

Your Profile

• Bachelor’s or Master’s degree in Aerospace Engineering, Mechanical or Thermal Engineering, or related field.
• Experience in thermal engineering within the space industry.
• Proficiency in thermal analysis software and CAD tools, especially ESATAN-TMS.
• Strong understanding of space thermal environments and heat transfer mechanisms.
• Experience with thermal testing and instrumentation.
• Knowledge of thermal coatings and materials for space applications.
• Experience with flight hardware development and qualification.
• Excellent problem-solving, communication, and documentation skills.
• Ability to work independently and in a team-oriented environment.

Desired Skills:

• Experience with common space standards (ECSS, MIL, etc), and associated tailoring

If you're excited about this role but don’t meet every requirement, we still encourage you toapply, your unique experience could be just what we need.

Make it real – what does it mean for you?​

• • Exposure to top global companies working with Capgemini (145 of the Fortune 500 companies)
  • Open access to digital learning platforms​
  • Active employee networks promoting diversity, equity and inclusion like OutFront, CapAbility or Women@Capgemini​

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  Capgemini is proud to be a Disability Confident Employer (Level 2)  under the UK Government’s Disability Confident scheme. As part of our commitment to inclusive recruitment, we will offer an interview to all candidates who:​

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

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  Capgemini. Make it real.​

Need to know

• All roles will require a level of security clearance; BPSS OR Security Clearance OR Developed Vetting. 
• Location: Work from the Stevenage site at least 3 days a week​
• ​You can bring your whole self to work. At Capgemini building an inclusive future is partof everyday life and will be part of your working reality. We have built a representativeand welcoming environment, for everyone.​

About Capgemini

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of over 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2025 global revenues of €22.5 billion.​

Make it real | www.capgemini.com​

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