Senior Spacecraft Thermal Engineer – Hybrid (Espoo)

ICEYE; Espoo; Hybrid; EUR 85,000 - 110,000; Full time

Job summary

ICEYE in Espoo, Finland is seeking a Senior Thermal System Engineer to lead spacecraft thermal design, modelling, and testing.

You will own thermal models, support qualification campaigns, and collaborate across electrical, mechanical, and AIT teams to ensure reliable space hardware from concept through qualification.

The role includes hybrid work, security screening, and close coordination with the Thermal Team Lead.

Qualifications

• Extensive experience in thermal simulation as a Thermal Engineer in the space industry.
• Experience with TVAC testing and model correlation.
• Proactive, self-directed working style.
• Strong troubleshooting and analytical skills.
• Based in Espoo; up to 30% remote work is acceptable for this role.
• Experience working in multi-disciplinary environments (electrical, AIT, mechanical, propulsion, RF).
• Experience with thermal control of satellites at system and subsystem level, or comparable complex aerospace systems.
• Comfortable working cross-functionally with systems, electrical, and manufacturing teams.
• Strong teamwork, documentation, and communication skills.

Responsibilities

• Design and implement full spacecraft-level thermal models for current and next-generation spacecraft.
• Specify and support qualification testing at subsystem and system level.
• Own thermal hardware end-to-end: propose new thermal design concepts to improve performance, identify new suppliers, and test and validate component designs.
• Perform thermal analysis of passive and active thermal control components, electrical assemblies, subsystems, and systems.
• Support assembly, integration, and test (AIT) activities, including maintenance of thermal control components.
• Support operations teams in resolving thermal issues during Launch and Early Orbit Operations (LEOP) and beyond.
• Ensure smooth, on-time product delivery from concept through qualification.
• Contribute to continuous improvement of our existing products.
• Partner closely with all hardware engineering domains, AIT engineering, and QA to ensure products meet specification.
• Work with system and subsystem engineers to define requirements for new products.
• Collaborate with internal and external engineering and AIT teams during integration and build to confirm thermal solutions meet requirements and targets.

Skills

Thermal simulation

TVAC testing

Troubleshooting

Analytical skills

Cross-functional work

Espoo based

Education

MSc in Aerospace Engineering

Tools

Systema-Thermica

ESATAN

Thermal Desktop

Job description

ICEYE in Espoo, Finland is seeking a Senior Thermal System Engineer to lead spacecraft thermal design, modelling, and testing.

You will own thermal models, support qualification campaigns, and collaborate across electrical, mechanical, and AIT teams to ensure reliable space hardware from concept through qualification.

The role includes hybrid work, security screening, and close coordination with the Thermal Team Lead.