Propulsion Test Engineer I (Aerospace)

Location: Onsite at Stennis Space Center, Mississippi, United States; travel to production and launch locations may be required up to 10%.

Hiring range: $90,000–$136,000 USD per year, plus equity.

Company

hirify.global develops Terran R, a heavy-lift orbital launch vehicle designed to deliver customer payloads to orbit.

What you will do

• Design, build, activate, maintain, and upgrade test stands for gas, liquid, and cryogenic systems, including P&IDs, analyses, component selection, and fabrication drawings.
• Conduct test operations for high-energy components, rocket engines, and booster and upper stages while monitoring GUIs, cameras, automation, and telemetry.
• Execute flight acceptance, qualification, and development test campaigns to validate designs and improve Terran R.
• Prepare test articles through inspections, functional checks, leak checks, repairs, and post-test processing.
• Author fabrication and test-article work instructions, coordinate with technicians and quality inspectors, and manage non-conformances and corrective actions.
• Improve procedures, control automation, data review, hardware flow, and facility processes to increase efficiency and reduce waste.

Requirements

• Bachelor’s degree in mechanical engineering, aerospace engineering, or a related field.
• Ability to safely operate common power tools and a valid driver’s license for vehicles used on the test site.
• Ability to deliver on tight schedules using unconventional and creative technical solutions.
• Successful candidates must pass a background check administered by the US government to obtain clearance for onsite work at the government partner location.
• Operations and integration assignments typically require scheduled morning or evening shifts.

Nice to have

• 3D modeling and drafting proficiency, including GD&T.
• Engineering fundamentals in thermal-fluid systems and structures.
• Hands-on fabrication experience with complex assemblies.
• Experience with fluid components, large-scale fluid P&IDs, high-pressure gas, cryogenic fluids, flammables, or hydraulics.
• Technical writing or documentation experience.

Culture & Benefits

• Hands-on, fast-paced, operational, and collaborative work across engineering, technicians, welders, and quality teams.
• Competitive salary and equity.
• Generous paid time off and sick leave.
• Parental leave and an annual learning and development stipend.
• Opportunity to contribute directly to the development and flight readiness of Terran R.

Hiring process

• Successful candidates must complete the required US government-administered background check before onsite work.