Advanced Reentry Technologies Who We Are: Inversion is an aerospace and defense company pioneering advanced reentry technology to enable next-generation capabilities from space. By combining high-performance materials, precision aerodynamics, and mission-driven autonomy, Inversion is transforming reentry into an operational capability for an entirely new class of missions. The company’s highly maneuverable reentry spacecraft, Arc, is designed for rapid global cargo delivery, hypersonic testing, and other national security missions that require precise, controlled flight through the atmosphere. Arc creates an entirely new transportation domain, unlocking unprecedented speed and global reach. Headquartered in Los Angeles, Inversion designs, manufactures, and integrates its spacecraft under one roof, enabling the company to move rapidly from concept to flight. The company is backed by leading investors including Y Combinator, Spark Capital, and Lockheed Martin Ventures, with customers across the U.S. government and commercial space industry. Position Overview: Ground test is how Inversion builds confidence in new reentry systems before flight. As a Propulsion & Energetics Test Engineer II, you will lead and support critical test campaigns that shape vehicle design, validate models, and retire technical risk. This role will focus on propulsion and thermal protection system test stand fabrication and maintenance, post-test data processing, and a broad range of additional ground test activities for reentry vehicles. Key Responsibilities: - Plan, design, build, integrate, and operate on propulsion, fluids, and thermal protection system torch test stands with a high degree of safety, autonomy, accountability, and responsibility. - Support additional propulsion and energetics test activities including subsystem, component, and integrated hardware testing. - Develop and document test instrumentation and measurement, equipment, methods, and processes. - Coordinate with design engineers and technicians on test planning, operations, and analysis. - Conduct test readiness reviews. Required Qualifications: - Bachelor’s degree in Aerospace Engineering, Mechanical Engineering, or equivalent experience. - Typically 2+ years of applicable hands-on experience testing hardware systems. - Understanding of fluid components and instrumentation including valves, regulators, pressure sensors, flow sensors, temperature sensors, force sensors, and more. - Experience with instrumentation, data acquisition, and post-test data processing. - Experience writing test procedures, reports, and technical documentation. - Demonstrated excellent verbal and written communication skills. - Capable of operating safely and effectively in fast-paced test environments. - Capable of working in a dynamic, fast-paced startup environment. - Position will require working with flammables and explosives. - Position may require extended work hours, weekend work. - Position may require standing, bending, and working directly with hardware on the floor for extended periods of time. - Must have the ability to obtain and maintain a U.S. government Secret/Top Secret security clearance. Desired Qualifications: - Experience with Python, MATLAB, FlexLogger, and other test software and tools for data processing and analysis. - Experience with electrical design and troubleshooting. - Capable of adapting to unforeseen circumstances; creatively problem solving to get a project over the finish line. - Experience with aerospace qualification or development testing for flight hardware. Our office headquarters is located in Playa Vista, CA. This position requires in office presence. The California annual base salary for this role is currently $106,000 - $150,000. Pay Grades are determined by role, level, location, and alignment with market data. Individual pay will be determined on a case-by-case basis and may vary based on the following considerations: interviews and an assessment of several factors that are unique to each candidate, job-related skills, relevant education and experience, certifications, abilities of the candidate and internal equity. ITAR Compliance: To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Learn more about the ITAR here . Equal Employment Opportunity: Inversion provides equal employment opportunities to all employees and applicants without regard to race, color, religion, age, sex, gender identity, sexual orientation, national origin, veteran status, or disability. Inversion collects and processes personal data in accordance with applicable data protection laws. If you are a US Job Applicant see the CCPA Privacy Policy Notice for further details.