Senior Thermal Engineer

ALTEN

1d•Remote

About The Position

ALTEN is seeking an experienced Senior Thermal Design Engineer to lead the design, analysis, and validation of spacecraft thermal control systems. This role involves developing models, defining control strategies, and supporting testing to ensure mission-critical performance and reliability. The engineer will collaborate with multidisciplinary teams to deliver innovative thermal solutions for space applications.

Requirements

Proven experience working within the space sector, supporting spacecraft or satellite programmes.
Approximately 10+ years of experience in thermal design and analysis for space applications.
Proficiency in thermal analysis tools (such as ESATAN-TMS, Thermal Desktop, or similar) and 3D CAD software.
Strong understanding of heat transfer mechanisms, space environments, and thermal control design principles.
A Bachelor’s or Master’s degree in Engineering, or equivalent military experience.

Nice To Haves

Ability to work autonomously while contributing effectively in a multidisciplinary team.
Experience mentoring or technically guiding other engineers is advantageous.
Experience planning and conducting thermal and environmental testing campaigns.
Familiarity with flight hardware development and qualification processes.
Excellent communication, documentation, and teamwork skills.

Responsibilities

Lead the end-to-end thermal design and simulation process for spacecraft components and subsystems.
Build and validate detailed thermal models using specialist engineering software.
Define and implement effective thermal control strategies using both active and passive methods, such as heat pipes, radiators, insulation, and heaters.
Support all levels of testing, from component evaluation to full spacecraft system trials.
Plan and oversee environmental qualification tests, including thermal vacuum campaigns, and review results to verify performance.
Participate in key engineering milestones, design reviews, and technical discussions throughout the project lifecycle.
Ensure all thermal systems comply with internal standards, performance targets, and customer expectations.
Work collaboratively with cross-functional teams including mechanical, systems, electrical, and propulsion engineers to ensure seamless integration.
Provide technical leadership, mentoring less experienced engineers, and encouraging best practice across the team.
Produce and maintain high-quality engineering documentation, including test procedures, reports, specifications, and technical drawings.