Thermal Engineer

BLUE ORIGIN

. Design and analyze high-performance radiators and spacecraft thermal control systems, including heat pipes, cold plates, vapor chambers, oscillating heat pipes, and pumped fluid loops .

Posted 10/22/2026full-timeUnited StatesJuniorMid-Level💰 $98,208 - $149,990 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in thermal design and analysis for spacecraft systems, utilizing advanced thermal modeling techniques and software. Proficient in analyzing complex thermal-fluid phenomena and collaborating with interdisciplinary teams to ensure compliance with thermal requirements.

Highest-signal resume keywords

Thermal Design And AnalysisThermal Modeling Using CFD SoftwareHeat Transfer PrinciplesExperience With Thermal DesktopUnderstanding Of Spacecraft Thermal Control

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Thermal AnalysisHeat TransferThermal-Fluid SciencesTwo-Phase Flow ModelingThermal Control Systems Design

Soft Skills

Excellent Communication Skills

Tools & Technologies

Thermal DesktopSinda/FluintCFD SoftwareStar-CCM+Ansys Fluent

Industry Keywords

Spacecraft Thermal EnvironmentsOrbital MechanicsCryogenic FluidsRadiator TechnologyThermal Hardware Lifecycle

About the role

Key responsibilities & impact

Design and analyze high-performance radiators and spacecraft thermal control systems, including heat pipes, cold plates, vapor chambers, oscillating heat pipes, and pumped fluid loops
Develop and apply thermal models to predict and validate component and integrated-system performance using Thermal Desktop, Sinda/Fluint, and CFD software
Analyze spacecraft thermal environments, including orbital mechanics and solar, albedo, and planetary IR heating
Support thermal hardware through the full lifecycle, from concept and trade studies through detailed design, manufacturing, and testing
Investigate complex thermal-fluid phenomena, including two-phase flow in heat rejection loops
Collaborate with interdisciplinary teams to define thermal requirements, interfaces, and integration strategies
Analyze test data to anchor thermal models and demonstrate compliance with requirements

Requirements

What you’ll need

Bachelor of Science degree in Mechanical Engineering, Aerospace Engineering, or a related field
2+ years of experience in thermal design and analysis, OR an advanced degree (Master's or PhD) with a focus on heat transfer or thermal-fluid sciences
Understanding of conduction, convection, and radiation
Experience with at least one thermal analysis or CFD software package, such as Thermal Desktop, Sinda/Fluint, Star-CCM+, or Ansys Fluent
Must be a U.S. citizen or national, U.S. permanent resident/current Green Card holder, or lawfully admitted into the U.S. as a refugee or granted asylum
Preferred: Ph.D. or Master's degree in a relevant field with dissertation/thesis focused on heat transfer, radiator technology, or CFD
Preferred: Experience designing and analyzing thermal systems for spacecraft or vacuum environments
Preferred: Proficiency with Thermal Desktop and Sinda/Fluint
Preferred: Experience modeling two-phase flow, heat pipes, cryogenic fluids, or other complex thermal-fluid systems
Preferred: Knowledge of spacecraft thermal control hardware and materials
Preferred: Understanding of AI and Machine Learning applications in engineering and ability to integrate new technologies
Excellent written and verbal communication skills

Benefits

Comp & perks

Medical, dental, vision, basic and supplemental life insurance
Paid parental leave
Short- and long-term disability
401(k) with a company match of up to 5%
Education Support Program
Stock Options for all regular employees working at least 20 hours/week
Up to four weeks of paid time off per year based on weekly scheduled hours
Up to 14 company-paid holidays
Potential benefits and bonuses based on role type, job level, individual contributions, and company results; amounts and eligibility are not guaranteed