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Thermal Engineer Security Clearance

Job in Boulder, Boulder County, Colorado, 80301, USA
Listing for: Bryn Neil
Full Time position
Listed on 2026-08-29
Job specializations:
  • Engineering
    Aerospace / Aviation / Avionics, Mechanical Engineer, Systems Engineer
Salary/Wage Range or Industry Benchmark: 110000 - 290000 USD Yearly USD 110000.00 290000.00 YEAR
Job Description & How to Apply Below
Position: Thermal Engineer with Security Clearance
Bryn Neil is a technology development company. We develop, adapt and scale technical capabilities across any domain faster than anyone else, protecting our mission partners and ensuring program success. Our Mission. Your Success.™ To learn more, visit  ---- Clearance: TS/SCI Years of experience: 5+ years

Location:

Boulder

Work Schedule:

Onsite

Skills:

• Thermal Desktop

• SINDA/FLUINT

• FloCAD

• Thermal Desktop Direct

• ANSYS
• Space vehicle thermal design and analysis

• Propulsion module thermal design and analysis

• Radiator sizing and thermal analysis

• Battery thermal design and analysis

• Heat pipe thermal design and analysis

• Orbital analysis (LEO, MEO, GEO)

• Thermal ground testing of space vehicles This is a true end-to-end spacecraft thermal engineering role where you'll own thermal design from initial concept through testing and verification. You'll work on complex space vehicle hardware using Thermal Desktop while collaborating with a multidisciplinary engineering team and have the opportunity to influence critical design decisions throughout the development lifecycle. You'll develop and analyze thermal models for spacecraft and flight hardware, performing thermal analyses to ensure systems meet mission requirements.

Day-to-day, you'll design thermal control solutions, support environmental testing, verify requirements, and work closely with systems, electrical, mechanical, and other engineering teams to deliver flight-ready hardware.

---- This is a general job description, the roles and responsibilities may vary depending on the team. Salary: our team represents a breadth of experience which correlates to a salary range of $110,000 to $290,000 a year.

---- Bryn Neil provides equal employment opportunities to applicants and employees without regard to race; color; sex; gender identity; sexual orientation; religious practices and observances; national origin; pregnancy, childbirth, or related medical conditions; status as a protected veteran or spouse/family member of a protected veteran; or disability. Bryn Neil International, LLC is committed to providing reasonable accommodation to, among others, individuals with disabilities and disabled veterans.

If you need an accommodation because of a disability to search and apply for a career opportunity with Bryn Neil, please send an e-mail to or call  to let us know the nature of your accommodation request and your contact information.
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