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ROLE HIGHLIGHTS: - Senior Thermal System Engineer - Location: Valencia, Spain - Department: Space Systems - Reports to: Mechanical Engineer Lead - Employment type: Permanent - Workplace model: Hybrid / Office - Employment is subject to applicable security screening (incl. SUPO) WHY THIS ROLE MATTERS: Every ICEYE satellite depends on precision engineering and rock-solid reliability. As we grow our operations and expand our spacecraft platforms to meet increasingly demanding mission requirements, we need an experienced spacecraft thermal control engineer to help lead this effort - someone who also brings hands-on experience testing, verifying, and qualifying space hardware. You'll join our Espoo, Finland team as a Senior Thermal System Engineer, supporting the company's continued growth. WHO WE ARE ICEYE is the world leader in sovereign intelligence from space. We deliver persistent monitoring capabilities to detect and respond to changes in any location on Earth. ICEYE owns the world's largest and most advanced SAR (synthetic aperture radar) satellite constellation. To our customers we provide intelligence with unmatched quality, latency and revisit times, in any weather, day or night. To governments who choose to operate their own constellation we provide this proven capability as a sovereign system. ICEYE-built constellations serve customers in defence and intelligence, environmental monitoring, insurance and emergency management. We enable fast decisions that contribute to a safer future. Founded and headquartered in Finland, ICEYE operates globally with over 1000 employees across Europe, North America, the Middle East, and Asia-Pacific. YOUR DAY-TO-DAY 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 WHAT WE’RE LOOKING FOR Must haves: - 6+ years of 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 (most of the team works from Finland); 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, analytical, documentation, and communication skills Nice to haves: - Hands-on experience with spacecraft thermal hardware: surface treatments, MLI, passive and active thermal control components, heat pipes - Experience with Systema-Thermica, ESATAN, and/or Thermal Desktop - MSc in Aerospace Engineering - Knowledge of