Senior Thermal Engineer Verified today

CesiumAstro · Westminster, CO · Mechanical · first seen 2026-09-03

About the role

You will be responsible for the design, analysis, and validation of thermal control systems for Cesium's next-generation products. As a senior member of a cross-functional team, you will lead thermal designs from initial concept design through requirements definition, detailed design, simulation and analysis, manufacturing, testing, and qualification.

You will work closely with electrical and mechanical engineers to develop highly optimized solutions. You will present engineering design review materials to customers and upper management, and participate in proposal-writing efforts. Excellent written and verbal communication skills are essential.

What you'll need

  • Bachelor of Science or higher in Mechanical, Thermal, or Aerospace Engineering from an accredited institution
  • 5 years of industry experience in thermal and mechanical design and analysis using numerical and analytical techniques (Master of Science may count as 2 years)
  • Expertise in electronics, PCBA, box, and system-level thermal design and analysis
  • Strong proficiency in ANSYS or Thermal Desktop, and CAD tools such as SolidWorks
  • Strong mechanical engineering and heat transfer foundation
  • Experience designing and analyzing radiative, conductive, and convective heat transfer
  • Experience building thermal resistance networks and reduced order thermal models for complex systems
  • Experience correlating thermal models with thermal chamber or TVAC test results
  • Experience developing analysis automation tools using spreadsheets or scripts
  • Familiarity with manufacturing processes for thermal control systems
  • Familiarity with development of thermal control systems and fixtures for lab environments

Preferred experience

  • Expertise in thermal management of phased array or high-power RF electronics
  • Experience in thermal analysis at die, lead-frame, and package level
  • Proficiency with computational scripting languages such as Matlab, Python, or Mathematica

Employment details

Full-time position based in Westminster, CO. CesiumAstro offers stock options and a comprehensive benefits package including health, dental, vision, HSA, FSA, life, disability, and retirement plans.

To conform with United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident, conditional resident, asylee, refugee, or eligible to obtain required authorizations from the U.S. Department of State.