Rocket Lab

Propulsion Engineer II, Engine Systems

Rocket Lab$100K — $151K *
Aerospace & Defense
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in mechanical engineering, aerospace engineering, or related field.
  • Strong fundamental understanding of fluid dynamics, thermodynamics, and cryogenic systems.
  • Fundamental understanding of mechanical design principles.
  • 2+ years of experience in rocket engine development, testing, or operations (for Propulsion Engineer II)
  • Advanced degree in a fluid mechanics-heavy field is a plus.

Responsibilities

  • 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.
  • Conduct post-test data reviews to distill learnings and adjust test planning.
  • Collaborate with cross-functional teams for integration and problem solving.
  • Support flight operations, including engine acceptance and post-flight analysis.

Benefits

  • Top tier medical HMO, PPO & 100% company-sponsored medical HSA plan option.
  • Dental and vision coverage.
  • 3 weeks paid vacation and 5 days sick leave per year.
  • 11 paid holidays per year.
  • Paid parental leave and access to disability insurance.
  • 401(k) retirement plan with company match.
  • Discounted employee stock purchase program and subsidized EV charging stations.
  • Onsite gym, food and drinks, and other discounts.
Full Job Description
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

Level and base salary will be determined on a case-by-case basis and may vary based on the following considerations: job-related knowledge and skills, education, and experience.

Base salary is just one component of our total rewards package at Rocket Lab. Employees may also receive company equity and access to a robust benefits package including: top tier medical HMO, PPO & a 100% company-sponsored medical HSA plan option, dental and vision coverage, 3 weeks paid vacation and 5 days sick leave per year, 11 paid holidays per year, flexible spending and dependent care savings accounts, paid parental leave, disability insurance, life insurance, and access to a 401(k) retirement plan with company match. Other perks include: Discounted employee stock purchase program, subsidized EV charging stations, onsite gym, food and drinks, and other discounts.

Eligibility for benefits may vary based on employment status, please check with your recruiter for a comprehensive list of the benefits available for this role. Benefit programs are subject to change at the company's discretion.

Base Pay Range (CA Only)

$100,800-$151,200 USD

About Rocket Lab

Rocket Lab is a private American aerospace manufacturer and small satellite launch service provider. The company was founded in 2006 by New Zealander Peter Beck. Rocket Lab's Electron rocket is designed to launch small payloads of up to 300 kg into low Earth orbit. The company has launched several successful missions and has contracts with NASA and other organizations. Rocket Lab has raised over $200 million in funding and has offices in the United States and New Zealand.
Learn more about Rocket Lab
Size
500 employees
Market Cap
$1.6 billion
Industry
Founded
2006
NASDAQ

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