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Sceye is a high-growth technology company, building the next generation of instant communications, imaging and remote sensing infrastructure through stratospheric platforms. Our lighter-than-air high-altitude platform systems (LTA HAPS) are capable of maintaining position over an operational area in the stratosphere (altitudes of 18 – 21km). They can carry multiple telecommunications, imaging and remote sensing payloads, providing unique functionality, cost, environmental and societal advantages.
Our HAPS be deployed in a matter of days and at a fraction of the cost of traditional infrastructure solutions. This makes them an ideal solution for providing telecommunications connectivity, emergency solutions in the event of natural or other disasters, environmental and infrastructure monitoring, Earth observation and a range of defense applications.
Our customers & partners include some of the largest global telecommunications companies, infrastructure operators, climate researchers, civil and defense agencies. At Sceye, we aim high, and we want you to join us at the stratospheric edge of innovation. As part of our mission-driven team, you’ll contribute to building breakthrough technologies that are changing the way we connect and observe the world. We are looking for individuals who bring not only deep expertise but also bold vision and an unwavering commitment to excellence.
Sceye is seeking a Lead Thermal Engineer with proven, hands-on experience supporting the design, analysis, and validation of thermal systems for high-altitude aerospace platforms, including HAPS, unmanned aerial systems (UAS), drones, or closely related flight vehicles. This role is responsible for ensuring reliable thermal performance of avionics, structures, propulsion-adjacent systems, and payloads operating in extreme stratospheric environments.
The Lead Thermal Engineer will serve as a trusted technical advisor and will be relied upon for sound judgment and guidance on thermal management strategies that directly influence system design, risk mitigation, and mission readiness. This role requires someone who has successfully applied thermal engineering expertise in prior industry roles and is comfortable owning thermal decisions.
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Design, analyze, and optimize active and passive thermal control systems for high-altitude aerospace platforms
Perform steady-state and transient thermal analyses using analytical and numerical methods
Develop, validate, and maintain thermal models predicting system behavior across stratospheric and mission-specific operating conditions
Support selection, qualification, and trade studies for materials, insulation, coatings, radiators, and thermal interfaces
Define thermal requirements, margins, and operating limits for avionics, batteries, payloads, and structural components
Support environmental testing, including thermal vacuum, altitude simulation, and temperature cycling tests
Analyze test data, correlate results with thermal models, and drive design updates as needed
Collaborate with mechanical, electrical, systems, and manufacturing teams to resolve real-world thermal challenges
Document designs, analyses, test results, and compliance with applicable engineering standards
Support design reviews, risk assessments, and continuous improvement initiatives
Sceye is proud to be an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, gender identity or expression, age, disability, veteran status, or any other legally protected status.
We encourage individuals from all backgrounds to apply, especially those who bring unique perspectives and experiences that can help us grow and innovate. If you require reasonable accommodation during the application or interview process, please contact us—we’re happy to assist.
Sceye is a private U.S. aerospace company building stratospheric platforms for connectivity and real-time environmental monitoring.
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Senior · 5+ years experience
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