Propulsion Engineer II, Engine Systems

About The Role

ABOUT ROCKET LAB

Rocket Lab is the end-to-end space company building rockets, spacecraft, and critical subsystems that keep the world connected, protected, expand humanity’s reach to the Moon, Mars, and beyond. We move fast, build real hardware for meaningful missions, and make the impossible routine. Come shape the future with us.

NEUTRON

Neutron is a medium lift launch vehicle capable of delivering the mega constellations of tomorrow, high assurance payloads, and human spaceflight. As a highly reusable launch platform, Neutron will deliver a highly cost-effective and reliable launch solution leveraging Rocket Lab’s proven execution history with the Electron program. If you’re interested in joining a high performing team, pushing the boundaries with a clean sheet development of re-usable liquid launch vehicle, this is your opportunity!

PROPULSION ENGINEER II – ARCHIMEDES ENGINE SYSTEMS

As an Engine Systems Propulsion Engineer, you will play a critical role in the development, testing, and operation of the Archimedes Engine family, a cornerstone of the Neutron rocket program. This highly technical role involves ownership of engine subsystems, test campaigns, data analysis, and refining designs for reliability and vehicle operations, while driving system architecture trades, managing interfaces, and optimizing requirements for the vehicle.

Success requires strong autonomy, technical expertise, curiosity, attention to detail, and the ability to organize complex systems into actionable plans while collaborating across teams. You will also support engine analysis, simulation, testing, and tool development, bringing deep technical acumen to solve challenging problems. As a self-starter capable of leading projects with minimal oversight, you will have the opportunity to make a significant impact in a fast-growing startup environment that fosters growth and innovation.

WHAT YOU’LL GET TO DO:

• Design, analyze, test, fly, and refly next generation propulsion hardware ensuring operational readiness and flight success.
• Develop clear requirements and deliver validated designs and hardware that meet program milestones and flight requirements.
• Execute engine test plans, including performance validation and reliability testing, and conduct post-test data reviews to distill learnings and adjust test planning.
• Collaborate with cross-functional teams to ensure robust integration, testing, and problem solving.
• Support flight operations, including engine acceptance and post-flight analysis.

YOU’LL BRING THESE QUALIFICATIONS AS PROPULSION ENGINEER II: 

• Bachelor’s degree in mechanical engineering, aerospace engineering, or related field.
• 2+ years of experience in rocket engine development, testing, or operations.
• Strong technical understanding of fluid dynamics, thermodynamics, and cryogenic systems.
• Fundamental understanding of mechanical design principles.

THESE QUALIFICATIONS WOULD BE NICE TO HAVE:

• Advanced degree in a fluid mechanics-heavy field.
• Proven ability to conduct hotfire data reviews, identify blockers for testing, and ensure operational safety of engine systems.
• Experience with staged combustion rocket engines and Methyl/LOX propellant systems.
• Background in failure analysis, combustion dynamics, turbopump mechanics, and/ or fluid systems analysis.
• Familiarity with reusable rocket engine systems and/or test/launch facility operations.

This position may require prolonged periods of sitting, standing, walking, computer work, and occasional exposure to moderate levels of noise, dust, and fumes in production areas

WHAT TO EXPECT  

We’re on a mission to unlock the potential of space to improve life on Earth, but that’s not an easy task. It takes hard work, determination, relentless innovation, teamwork, grit, and an unwavering commitment to achieving what others often deem impossible. Our people out-think, out-work, and out-pace. We pride ourselves on having each other’s backs, checking our egos at the door, and rolling up our sleeves on all tasks big and small. We thrive under pressure, work to tight deadlines, and our focus is always on how we can deliver, rather than dwelling on the challenges that stand in the way.

Important information:

FOR CANDIDATES SEEKING TO WORK IN US OFFICES ONLY:

To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Learn more about ITAR here.

Rocket Lab provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. This policy applies to all terms and conditions of employment at Rocket Lab, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.

Applicants requiring a reasonable accommodation for the application/interview process for a job in the United States should contact Giulia Johnson at View email address on us.fitly.work dedicated resource is intended solely to assist job seekers with disabilities whose disability prevents them from being able to apply/interview. Only messages left for this purpose will be considered. A response to your request may take up to two business days.

FOR CANDIDATES SEEKING TO WORK IN NEW ZEALAND OFFICES ONLY:

For security reasons, background checks will be undertaken prior to any employment offers being made to an applicant. These checks will include nationality checks as it is a requirement of this position that you be eligible to access equipment and data regulated by the United States' International Traffic in Arms Regulations. 

Under these Regulations, you may be ineligible for this role if you do not hold citizenship of Australia, Japan, New Zealand, Switzerland, the European Union, or a country that is part of NATO, or if you hold ineligible dual citizenship or nationality. For more information on these Regulations, click here ITAR Regulations.