Principal Thermal Engineer

Principal Thermal Engineer - Stevenage

Location:

Stevenage
Duration: 12 months, with potential extension
Rate:
Up to £50 per hour (Umbrella)
Clearance: SC required to start
Working Pattern:
Onsite role (minimum 3 days per week, but assume full-time onsite)

You’ll take technical ownership of thermal analysis activities, supporting projects from early concept stages through to final performance evidence. This includes:

• Delivering packages of thermal analysis work with clear conclusions
• Using a mix of hand calculations and Finite Element methods (e.g. ANSYS)
• Producing thermal studies involving conduction, convection and radiation
• Supporting thermal analysis of electronic assemblies and embedded systems
• Using MATLAB/Simulink, CFD tools or Python/MATLAB scripting where required
• Presenting findings in reports and at design reviews
• Working closely with multi-disciplinary teams and project stakeholders
• Managing your workload and providing regular progress updates

This position is ideal for someone who combines technical depth with strong communication skills and enjoys collaborating across engineering disciplines.

Degree in a STEM discipline (or equivalent experience)

Proven background in thermal analysis

Experience with heat transfer modelling using analytical and FEA methods

• Thermal analysis of electronic systems
• MATLAB/Simulink thermal modelling
• CFD for thermal behaviour
• Python/MATLAB scripting

Ability to make quick, practical assessments to support design decisions

Confident communicator able to collaborate with internal and external teams

Experience from defence, aerospace or electronics sectors is beneficial

This is an excellent opportunity to take a key role in a major defence engineering environment, working alongside highly skilled colleagues and contributing to products used globally. The project work is varied, technically challenging and makes a measurable impact.