Propulsion Thermal Engineer

Application close date:

Applications will be accepted on an ongoing basis until the requisition is closed.

At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We’re working to develop reusable, safe, and low-cost space vehicles and systems within a culture of safety, collaboration, and inclusion. Join our team of problem solvers as we add new chapters to the history of spaceflight!

This role is part of the Blue Origin Engines business unit, where our focus is the design, development, manufacturing, and testing of engines and propulsion systems. Built for multiple uses, our family of engines is powering the next generation of rockets for commercial, civil, national security, and human spaceflight.

As part of a small team of engineers, you will perform thermal analysis to support the design and development of our thruster systems. This role supports the full development cycle, from early design trades through hot-fire testing and hardware qualification, and gives you direct influence over how thruster hardware is designed and verified. The ideal candidate has a strong foundation in heat transfer, thermodynamics, and numerical analysis and can solve complex engineering problems from initial concept through qualification.

You should be comfortable working independently, contributing to design decisions, and communicating results clearly to the rest of the team.

Responsibilities include but are not limited to:

Perform detailed thermal analysis of thrusters and subassemblies, including design trade studies, component sizing, and design verification

Develop detailed thermal models using industry-standard tools to predict thruster and subsystem thermal behavior

Analyze thermal test data to anchor, validate, and refine thermal models and analyses

Support component design from a thermal perspective throughout the development cycle

Lead and support thermal design reviews and verification activities throughout the product lifecycle

Collaborate cross-functionally with propulsion, materials, manufacturing, and test teams to ensure designs meet thermal margins and safety requirements

Document analysis methods, assumptions, results, and recommendations

Contribute to the continuous improvement of thermal analysis processes, tools, and best practices within the team

Minimum Qualifications 4+ years of professional experience related to thermal analysis

Strong technical fundamentals in fluids and thermodynamics

Experience with Thermal Desktop, SINDA FLUINT, and Ansys Proficiency with 0-D and 1-D thermal/fluid analysis

Able to perform hand calculations to validate and improve models

Demonstrated ability to lead projects and work independently

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 Qualifications M.S. degree or higher in mechanical or aerospace engineering6+ years of thermal analysis of propulsion systems and components

Base Pay Range for:

WA applicants is $ - $Other site ranges may differ

Culture Statement Don’t meet all desired requirements? Studies have shown that some people are less likely to apply to jobs unless they meet every single desired qualification. At Blue Origin, we are dedicated to building an authentic workplace, so if you’re excited about this role but your past experience doesn’t align perfectly with every desired qualification in the job description, we encourage you to apply anyway.

You may be just the right candidate for this or other roles.

Export Control Regulations Applicants for employment at Blue Origin must be a U.S. citizen or national, U.S. permanent resident (i.e. current Green Card holder), or lawfully admitted into the…