Propulsion Engineer II, Engine Systems (Aerospace)

Location: Long Beach, California, United States; onsite role

Salary: $100,800–$151,200 USD per year base pay for California.

Company

hirify.global is an aerospace company developing rockets, spacecraft, and critical spaceflight subsystems, including the reusable Neutron launch vehicle.

What you will do

• Design, analyze, test, fly, and refly next-generation propulsion hardware for the Archimedes engine family.
• Own engine subsystems, develop requirements, and deliver validated designs and hardware against program and flight milestones.
• Execute engine test campaigns, including performance validation and reliability testing.
• Review post-test and post-flight data, identify learnings, and adjust test planning and designs.
• Collaborate with cross-functional teams on engine integration, testing, troubleshooting, and flight operations.

Requirements

• Bachelor’s degree in mechanical engineering, aerospace engineering, or a related field.
• At least 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.
• For U.S. office work, candidates must be U.S. citizens, lawful permanent residents, qualifying refugees or asylees, or eligible to obtain required U.S. government authorizations under ITAR.

Nice to have

• Advanced degree in a fluid-mechanics-focused field.
• Experience conducting hotfire data reviews, identifying test blockers, and ensuring engine-system operational safety.
• Experience with staged-combustion rocket engines and Methyl/LOX propellant systems.
• Background in failure analysis, combustion dynamics, turbopump mechanics, or fluid systems analysis.
• Familiarity with reusable rocket engines and test or launch facility operations.

Culture & Benefits

• Fast-growing startup environment focused on rapid hardware development, innovation, and meaningful space missions.
• Medical, dental, and vision coverage, including a company-sponsored HSA plan option.
• Three weeks of paid vacation, five sick days, paid holidays, parental leave, disability insurance, and life insurance.
• 401(k) retirement plan with company match, employee stock purchase program, and potential company equity.
• Onsite gym, subsidized EV charging, food and drinks, and employee discounts.