Lead Thermal Engineer jobs in United States
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Sceye · 1 day ago

Lead Thermal Engineer

Sceye is a high-growth technology company focused on building next-generation communications and remote sensing infrastructure through stratospheric platforms. The Lead Thermal Engineer will be responsible for the design, analysis, and validation of thermal systems for high-altitude aerospace platforms, ensuring reliable thermal performance in extreme environments.

3D TechnologyAerospaceInternetSensorSolar
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H1B Sponsor Likelynote

Responsibilities

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

Qualification

Thermal analysisThermal system designHeat transfer principlesThermal modeling toolsEnvironmental testingAerospace engineeringAnalytical skillsProblem-solving skillsTechnical documentation

Required

Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a closely related field
5–10 years of demonstrated, hands-on experience in thermal analysis and thermal system design for aerospace or high-altitude flight systems
Proven practical experience supporting thermal management for drones, HAPS, UAS, or closely related aerospace platforms
Demonstrated ability to independently own thermal analyses and provide clear, experience-based recommendations to engineering leadership and cross-functional teams
Strong, applied understanding of heat transfer principles (conduction, convection, radiation), particularly in low-density, high-altitude environments
Experience developing, validating, and correlating thermal models using industry-standard tools (e.g., ANSYS, Thermal Desktop, COMSOL, or equivalent)
Experience supporting hardware through design, test, integration, and operational readiness, not solely academic or theoretical work
Ability to operate effectively in a fast-paced, R&D-driven aerospace environment
Strong analytical, problem-solving, and technical documentation skills

Preferred

Master's degree in Mechanical or Aerospace Engineering
Direct experience with high-altitude platforms, stratospheric vehicles, or long-duration unmanned flight systems
Hands-on experience with thermal vacuum testing, environmental qualification, or flight validation campaigns
Knowledge of lightweight structures, composites, and advanced aerospace materials
Experience supporting mission-critical or flight-certified hardware

Benefits

Chef-Prepared Lunches – Fresh, onsite meals to keep you fueled and focused.
Snacks & Refreshments – Enjoy a variety of snacks and drinks available throughout the day.
Wellness Perks – Access to a gym, pickleball court, and an outdoor dog kennel.
Dog-Friendly Environment – Bring your four-legged friends to work and enjoy a pet-welcoming space.
Comprehensive Health Coverage – Medical, dental, vision, and disability insurance, with over 82% of premiums covered—and 100% for everything else.
401(k) with Match – Company contributions that are yours from day one.
High-Performance Culture – Join a collaborative, inclusive environment where your work helps shape the future of aerospace.

Company

Sceye

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Sceye is a material science company that is leading the development of a new generation of high-altitude platform stations

H1B Sponsorship

Sceye has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (3)
2024 (1)
2022 (2)
2020 (2)

Funding

Current Stage
Growth Stage
Total Funding
$65M
Key Investors
SoftBankMawarid HoldingKittyHawk
2025-06-25Series C· $15M
2024-09-17Series C
2021-08-04Series B· $50M

Leadership Team

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David Kim
Chief Technology Officer
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Company data provided by crunchbase