Principal Propulsion Engineer, Engine Systems & Test jobs in United States
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Relativity Space · 4 hours ago

Principal Propulsion Engineer, Engine Systems & Test

positionLong Beach, California
timeFull-time
remoteHybrid
seniorityLead/Staff
money$196K/yr - $253K/yr
date11+ years exp

Relativity Space is focused on building rockets for today's needs and tomorrow's breakthroughs. The Principal Propulsion Engineer will drive engine system trades, manage interfaces, and support overall engine system development, while also mentoring team members and collaborating across technical disciplines.

3D TechnologyAerospaceArtificial Intelligence (AI)Manufacturing

Responsibilities

Driving engine system (architecture + CONOPS) trades
Managing engine interfaces & negotiating requirements to optimize for the vehicle
Supporting engine system development overall
Supporting engine system analysis and simulation
Supporting engine testing
Supporting tool development

Qualification

Fluid mechanicsThermodynamicsLiquid-propellant rocket enginesComplex engineering systemsEngine system analysisProblem-solvingTeam collaborationMentorship

Required

Experience applying engineering fundamentals in fluid mechanics & thermodynamics
Clear evidence of ownership, problem-solving skills, and effective team collaboration from school or work experience
Demonstrated drive to deliver on ambitious schedules, even and especially if unconventional & creative solutions are necessary to do so
Bachelor's degree in a science, engineering, technology, or mathematics field
Working knowledge of liquid-propellant rocket engines
11+ years of relevant experience, preferably in complex engineering system development and/or test environment

Preferred

Working knowledge of fluid components such as valves and instrumentation
Working knowledge of engine subsystems such as combustion devices and turbomachinery

Benefits

Competitive salary and equity
Generous PTO and sick leave policy
Parental leave
Annual learning and development stipend

Company

Relativity Space

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Relativity Space is an aerospace company that designs, develops, and builds 3D printed rockets.
dateFounded in 2015
location
Long Beach, California, USA
people-size1001-5000 employees
web-link
http://relativityspace.com

Funding

Current Stage
Late Stage
Total Funding
$1.36B
Key Investors
FidelityTiger Global ManagementPlayground Global
2023-11-15Series F· $20M
2022-02-03Secondary Market
2021-06-08Series E· $650M

Leadership Team

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Eric Schmidt
Chair and CEO
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David Giger
VP of Engineering
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Recent News

Research & Development World
Advanced manufacturing and process innovation: When the whole plant becomes the machine
2025-12-24
TechAfrica News
SES and Relativity Space Collaborate to Accelerate Global Satellite Connectivity
2025-11-14
Business Insider
Eric Schmidt said he worries that most governments will use Chinese AI models
2025-11-12
Company data provided by crunchbase