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Principal Propulsion Engineer, Blue Thrusters
BLUE ORIGIN. Design, analyze, and develop thruster combustion devices, including injectors and chambers .
Tech Stack
Tools & technologiesPython
About the role
Key responsibilities & impact- Design, analyze, and develop thruster combustion devices, including injectors and chambers
- Perform performance, combustion stability, thermal, and transient analyses and correlate results with test data
- Integrate combustion devices, propellant valves, feed-system interfaces, and drive electronics at the thruster level
- Define valve requirements and interfaces with valve engineers
- Plan and support thruster hot-fire test campaigns, including test articles, instrumentation, execution, and data review
- Investigate anomalies and failures from root cause through corrective action
- Lead engineering trade studies and provide analysis-based recommendations
- Develop and improve performance and stability codes, hot-fire data trending, data reduction, and plotting tools
- Mentor and coach engineers on injector and chamber design, analysis, testing, and data review
- Collaborate with systems, vehicle, electrical, software, manufacturing, and test operations teams
- Identify and communicate technical risks to the team and leadership
- Author and review technical reports, test plans, qualification documentation, and engineering specifications
Requirements
What you’ll need- B.S. or higher in Aerospace Engineering, Mechanical Engineering, or a related technical field
- 10+ years of experience in liquid rocket engine or spacecraft thruster development
- Hands-on experience designing and analyzing injectors and thrust chambers, including performance, combustion stability, and thermal analysis
- Experience planning, conducting, and analyzing hot-fire testing of liquid propulsion hardware
- Solid understanding of propellant valves, including solenoid and pneumatically actuated valves, and their effects on thruster behavior
- Experience supporting technical failure investigations and implementing design corrections
- Ability to work across disciplines and make sound technical decisions with incomplete information
- Strong communication and interpersonal skills, with experience mentoring engineers
- Must be a U.S. citizen or national, U.S. permanent resident/current Green Card holder, or lawfully admitted refugee or granted asylum
- Preferred: M.S. in Mechanical Engineering, Aerospace Engineering, or a related field
- Preferred: Experience taking thruster or engine hardware from clean sheet through qualification and flight
- Preferred: Experience with cryogenic, gaseous, liquid storable, or hypergolic propellants
- Preferred: Experience with ROCCID, TDK, NASA CEA, ROCETS, or similar tools
- Preferred: Engine and thruster transient modeling experience
- Preferred: Additive manufacturing, welding, and brazing experience for injector and chamber hardware
- Preferred: High-frequency data analysis and hot-fire data trending tools or databases
- Preferred: Familiarity with 3D CAD, preferably Creo, and GD&T per ASME Y14.5
- Preferred: Proficiency in scripting and analysis tools such as Python
- Preferred: Experience at a fast-moving propulsion or launch vehicle developer
Benefits
Comp & perks- Medical, dental, and vision insurance
- Basic and supplemental life insurance
- Paid parental leave
- Short- and long-term disability
- 401(k) with 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; not guaranteed