Hiring.Camp

Thermal Engineer II

Muon Space

·

Aug 18, 2026

Apply
Salary
$144k – $177k
Location
San Jose, CA · San Jose, California, United States
Workplace
Remote, Hybrid, Onsite
Department
Engineering - Hardware
Education
Bachelor
Source
Greenhouse

Description

About the role

Muon Space is hiring a Thermal Engineer II to own the thermal design and analysis of spacecraft assemblies and subsystems — from hand calcs and models through TVAC test support. You'll work independently within your scope and partner across mechanical, electrical, and systems teams. 

This position is hybrid and requires working on-site in our San Jose, CA office three days per week.

Responsibilities

  • Build and run thermal models (Thermal Desktop or similar): TVAC margin, conduction/radiation hand calcs, and transient analyses.
  • Own the thermal analysis package for an assembly or subsystem end-to-end.
  • Size radiators and heaters and define component thermal limits and margins.
  • Support thermal verification and TVAC test campaigns, including data reduction.
  • Coordinate thermal interfaces with mechanical, electrical, and systems teams.
  • Mentor interns and junior engineers through model reviews.

Required Qualifications

  • 5+ years (BS+5 / MS+3) in spacecraft or aerospace thermal engineering.
  • Independent user of a thermal analysis package (Thermal Desktop or equivalent).
  • Experience with TVAC or other spacecraft thermal testing.
  • Solid grasp of conduction/radiation fundamentals and hand calcs.
  • B.S. or higher in Mechanical, Aerospace, Physics, or a related field.

Nice-to-have

  • Scripting in Python or Matlab.
  • Mechanical CAD (SolidWorks preferred).
  • Experience with IR-imaging systems or spacecraft payloads.

Salary

The salary range for this role is $144,000 - $177,000, plus a competitive equity grant and comprehensive benefits package. Final compensation will be determined based on skills, qualifications, experience, and geographic location as assessed during the interview process. 

About Muon Space

Founded in 2021, Muon Space is an end-to-end Space Systems Provider that designs, builds, and operates LEO satellite constellations delivering mission-critical data. Our revolutionary, integrated technology stack enables customers to optimize every dimension of their missions for faster time-to-orbit and superior constellation remote sensing performance. Our state-of-the-art facility in the heart of Silicon Valley is optimized for manufacturing spacecraft and rapid, flexible payload integration at scale. From climate monitoring to national security, Muon Space is dedicated to delivering Earth Intelligence for a safer and more resilient world.

Taking Care of Our Team

At Muon salary is only part of our total compensation package. In addition to salary, full-time employees receive equity compensation as well as benefits including medical, dental, and vision insurance, a 401k retirement plan, short & long term disability and life insurance. We also offer three weeks paid vacation for new employees, along with 12 paid holidays, unlimited sick time and paid parental leave.

Our mission embraces the entire planet and we believe our team should too.  Muon is dedicated to creating a diverse and dynamic company and workforce. We believe in equal employment opportunity regardless of race, color, ancestry, religion, sex, age, national origin, citizenship, sexual orientation, marital status, disability, or gender identity. We value diversity in the workplace, and that starts with our applicants. We encourage you to apply, even if you don't check all the boxes, and we look forward to reviewing your application! In addition, if you need a reasonable accommodation as part of your application for employment or interviews with us, please let us know.

ITAR/EAR Requirements

This position requires access to export controlled information. To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency. The Company may, for legitimate business reasons, decline to pursue any export licensing process.

 

Skills

PythonSolidWorks

Similar Jobs

30

Thermal Engineer II

York Space Systems·Greenwood Village, Colorado

1mo ago

Thermal Engineer II

Voyagertechnologiesinc·Pittsburgh, Pennsylvania·Hybrid, Onsite

2mo ago

Design Engineer II (Thermal Sensor Products)

Default Brand·Hayward, California

4d ago

Engineer II, Avionics Thermal Engineering (R5298)

Shieldai·San Diego, California +1·Onsite

5d ago

Thermal Systems Engineer II (Multi-Layer Insulation)

JPL Careers·US

6d ago

Mechanical Engineer II - Thermal Engineer

RTX·Tucson, Arizona·Onsite

6d ago

Senior Spacecraft Thermal Engineer II

Rocket Lab Corporation·Long Beach, California

1w ago

Thermal Hardware Engineer II - Lunar Permanence

Blueorigin·Denver, Colorado +3

1w ago

Engineer II - Thermal-Mechanical Engineer

Framatome North America·Lynchburg, Virginia

2w ago

Thermal Hardware and Test Engineer II

Varda Space Industries·El Segundo, California

2w ago

Mechanical Engineer - Microfluidics & Thermal Systems (Level I, II, or Senior)

Space Tango Llc·Lexington, Kentucky

4w ago

Spacecraft Thermal Engineer (I/II)

Terran Orbital Corporation·Irvine, California

1mo ago

Thermal/Fluids Test Engineer II - Lunar Transportation

Blueorigin·Landmark, Arkansas

1mo ago

Mk1 Thermal Analysis Engineer II

Blueorigin·Denver, Colorado +4

1mo ago

Thermal Hardware Engineer II - Lunar Permanence

Blueorigin·Denver, Colorado +4

1mo ago

Thermal Hardware Engineer II - Lunar Permanence

Blueorigin·Denver, Colorado +3

1mo ago

Thermal Hardware Engineer II - Lunar Permanence

Blueorigin·Denver, Colorado +3

1mo ago

Thermal Hardware Engineer II - Lunar Permanence

Blueorigin·Denver, Colorado +4

1mo ago

Thermal/Fluids Test Engineer II - Lunar Transportation

Blueorigin·Landmark, Arkansas

1mo ago

Thermal Design Engineer II - Lunar Permanence

Blueorigin·Denver, Colorado +4

1mo ago

Mechanical Engineer II - Electronics Packaging & Thermal Design

North Atlantic Industries, Inc·Bohemia, New York

1mo ago

Development Engineer II - Thermal Equipment

First Solar·Perrysburg, Ohio

2mo ago

Propulsion Engineer II, Thermal Systems

Blueorigin·US

2mo ago

Thermal Mechanical Engineer (Level I, II, or III)

ThermAvant Technologies Careers·Columbia, Missouri

2mo ago

Engineer II, Thermal Designer/Analyst (R4934)

Shieldai·Dallas, Texas·Onsite

5mo ago

Mechanical Engineer, Thermal Control Systems II

Vast·Long Beach, California

5mo ago

Thermal Systems Engineer II

Jci·US·Remote, Onsite

9mo ago

Thermal Engineer (II or III)

Trueanomalyinc·Denver, Colorado·Onsite

9mo ago

Engineer III (Thermal)

Citizensenergygroup·Indianapolis, Indiana·Hybrid

1mo ago

Thermal Hardware Engineer III - Lunar Permanence

Blueorigin·Denver, Colorado +3

6d ago