Thermal Engineer (Senior)

Join Our Mission

Spacecraft represent the most pressing unmet need across the entire aerospace industry. As more launch vehicles come online and the cost to orbit decreases, more companies launching payloads to space continue to emerge.

For the first time in history, this influx of payload companies combined with reduced launch costs has resulted in a massive increase in need for commercial spacecraft platforms, known as satellite buses. These buses hold the payloads of our customers and are flown on launch vehicles.

Apex manufactures these satellite buses at scale using a combination of software, vertical integration, and hardware that is designed for manufacturing. Our spacecraft enable the future of society : ranging from earth observation to communications and more.

We'd love for you to join us on our mission of providing humankind access to the galaxy beyond our planet.

About the Role

Requirements :

• U.S. Persons status is required as this position requires access to export-controlled data.
• Bachelor's degree in Mechanical Engineering, Aerospace Engineering, or a related field.
• 5+ years of experience in thermal engineering, preferably in spacecraft or aerospace systems.
• Proficiency with thermal analysis tools, especially Ansys Thermal Desktop.
• Strong understanding of spacecraft thermal control systems.
• Familiarity with thermal margin definitions per MIL-STD, Aerospace TOR, or vendor command media.
• Proficiency with Siemens NX and Teamcenter.
• Experience with thermal vacuum testing, thermal test instrumentation, and data acquisition systems.
• Working knowledge of 2-phase thermal control systems.
• Strong analytical, problem-solving, and communication skills.
• Ability to critically assess thermal model results and correlate with test or flight data.
• Capable of managing multiple concurrent projects in a fast-paced environment.

Responsibilities :

Why Join Apex?

Apex believes in creating a work environment that you look forward to embracing every day. Our employees love working at Apex, and we want you to love it too. We're a fast-growing startup backed by $200M in Series C funding, and we invest heavily in our people from day one.

What We Offer

Ready to join a team where your contributions matter and your future is bright? Let's build something extraordinary together.

Equal Opportunity Employer

Apex Technology, Inc. is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Candidates and employees are always evaluated based on merit, qualifications, and performance. We will never discriminate on the basis of race, color, gender, national origin, ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability, or any other legally protected status.