Senior Mechanical Engineer

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  As a Senior Mechanical Engineer at Inversion, you will own cradle to grave development of mission-critical hardware on one of the most capable reentry vehicles ever developed. This role spans flight hardware, prototype systems, tooling, and integration support that enables the program to move quickly from concept to build. You’ll drive mechanical system architecture working closely with cross-functional teams to solve complex packaging and manufacturability problems while driving designs toward real hardware.  This role demands a versatile, hands-on engineer who can fluidly move between high-level system architecture, detailed design work, first-principles analysis, hardware testing, and cross-functional collaboration. You will be a key member of the Mechanical team, reporting to the Director of Mechanical.  Key Responsibilities  Design and develop flight-critical mechanical systems, brackets, enclosures, mounts, and mechanisms from concept through flight qualification  Lead mechanical design of subsystem integration and vehicle packaging, ensuring hardware comes together as a high-performing, cohesive system  Perform detailed structural and thermal analysis using FEA and analytical methods to validate designs against hypersonic and spaceflight environments  Develop and execute comprehensive test campaigns including functional testing, environmental qualification (vibration, shock, thermal, TVAC, EMI/EMC), life cycle testing, and acceptance testing  Create detailed engineering drawings, assembly procedures, interface control documents (ICDs), and design specifications  Work hands-on with manufacturing and integration teams to build, troubleshoot, and iterate hardware rapidly  Drive design reviews and present technical trade studies to inform architecture and component selection decisions  Coordinate with suppliers and vendors for custom component procurement, ensuring adherence to schedule and technical requirements  Support vehicle integration activities and provide technical expertise during assembly, test, and launch operations  Required Qualifications  Bachelor’s degree in Aerospace Engineering, Mechanical Engineering, a related field, or equivalent technical experience  Typically 5+ years of professional experience developing hardware for aerospace, defense, or similarly demanding applications  Strong mechanical design skills with proficiency in 3D CAD software (NX, CATIA, Solidworks, or similar)  Hands-on experience with structural and thermal analysis using FEA tools (ANSYS, Abaqus, NASTRAN, or equivalent)  Demonstrated ability designing for harsh environments including vacuum, extreme temperatures, shock, and vibration  Deep understanding of mechanical systems including mechanisms, actuators, fasteners, bearings, seals, and material properties  Familiarity with environmental testing (shock, vibration, TVAC) and qualification programs for spaceflight hardware  Proficiency creating detailed engineering drawings with GD&T and other technical documentation  Demonstrated excellent verbal and written communication skills  Proven ability to work effectively in a fast-paced environment  Must have the ability to obtain and maintain a U.S. government Secret/Top Secret security clearance.  Desired Qualifications  Master’s degree in Aerospace Engineering, Mechanical Engineering, a related field, or equivalent experience  Demonstrated history of mechanical design ownership from cradle to grave  Experience with spacecraft and aerospace mechanisms such as deployment systems, control surfaces, separation mechanisms, solar array drives, gimbal systems, or cartridge actuated devices  Familiarity with propulsion system components including valves, pressure vessels, feed systems, and fluid interfaces  Experience supporting prototype builds and rapid design iteration in a hardware-rich environment  Prior work in fast-paced startup environments or small multidisciplinary teams  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 $137,000 - $193,000.  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.