Thermal Engineer - Spacecraft and Satellite Systems

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Full Time Professional Cape Canaveral, FL, US

13 days ago Requisition

Sidus Space® (NASDAQ: SIDU) is an innovative space and defense technology company offering flexible, cost-effective solutions, including satellite manufacturing and technology integration, AI-driven space-based data solutions, mission planning and management operations, AI/ML products and services, and space and defense hardware manufacturing. With its mission of Space Access Reimagined®, Sidus Space is committed to rapid innovation, adaptable and cost-effective solutions, and the optimization of space system and data collection performance.

With demonstrated space heritage, including manufacturing and operating its own satellite and sensor system, Lizzie Sat®, Sidus Space serves government, defense, intelligence, and commercial companies around the globe.

Strategically headquartered on Florida’s Space Coast, Sidus Space operates a 35,000-square-foot space manufacturing, assembly, integration, and testing facility and provides easy access to nearby launch facilities. But it’s our people who truly set us apart. We foster a culture of collaboration, continuous learning, and agility, empowering our team to innovate and evolve in a rapidly changing industry. Join us at Sidus Space to be part of something extraordinary and help shape the future of space access!

The Thermal Engineer will support the development of spacecraft and satellite systems. In this role you will lead thermal analysis, modeling, and verification of circuit cards, electronic assemblies, and spacecraft components to ensure system reliability and performance in harsh space environments.

The position is 100% onsite, located in Cape Canaveral, Florida.

• Perform detailed thermal analyses of electronics and spacecraft hardware using industry-standard tools (e.g., Thermal Desktop, SINDA/FLUINT, ESATAN).
• Develop and maintain thermal models to support design trades, requirements development, and system-level thermal architecture.
• Identify thermal risks, propose mitigation strategies, and drive design improvements.
• Plan and support thermal vacuum testing, thermal cycling, and environmental qualification activities.
• Collaborate with electrical, mechanical, and systems engineering teams to integrate thermal considerations into multi-disciplinary spacecraft development.
• Generate clear and comprehensive technical documentation, analysis reports, and presentations for internal and external design reviews.
• Provide thermal expertise during build, integration, and test phases to ensure compliance with design intent.
• Treat all coworkers with respect and dignity ensuring a collaborative culture is continually developed and maintained.
• Other duties as assigned**

• Bachelor’s degree in Mechanical Engineering, Aerospace Engineering, or related field.
• 5+ years of relevant experience in spacecraft thermal analysis, electronics thermal design, or related space-system thermal engineering.
• Proficient in Microsoft 365 for communication and collaboration.

• Hands-on experience developing thermal architectures for satellites or space hardware.
• Proficiency with Thermal Desktop, SINDA/FLUINT, ESATAN, or similar thermal analysis tools.
• Experience supporting environmental test campaigns (TVAC, thermal cycling).
• Familiarity with high-density electronics, electronic packaging, and thermal management strategies for space systems.
• Working knowledge of CAD tools such as Solid Works or similar.

• Prolonged periods…