Principal Mechanical Engineer - Advanced Programs

Who We’re Looking For Quantum Space is seeking a Principal Mechanical Engineer for Advanced Programs to drive mechanical architectures for next-generation spacecraft concepts—where requirements are evolving, the trade space is wide, and rigorous engineering judgment matters. This is a principal-level role: you will own ambiguous problems, set technical direction, and lead cross-functional execution toward buildable designs. Where You’ll Make an Impact Lead mechanical architecture and trade studies: packaging, mechanism concepts, structural layout, thermal hardware accommodation, serviceability, and integration strategy Own subsystem/interface definitions and drive closure with systems engineering: ICD inputs, keep-outs, access constraints, mass properties, alignment and stability needs Drive mechanical design maturation from concept to preliminary/detailed design: requirements, sizing logic, margins and assumptions, verification strategy Lead risk identification and mitigation planning (materials, joints, mechanisms, contamination, alignment, thermal distortion, integration sequence) Support prototype builds and rapid iteration: design-to-test loops, test learning incorporation, design updates Partner with procurement and suppliers: SOW technical inputs, technical evaluation, vendor coordination, design for manufacturability feedback loops Deliver review-quality content: architecture rationale, risk posture, verification approach, and build/test readiness What It Takes BS or MS in Mechanical Engineering or related field 10+ years mechanical engineering experience, with sustained ownership of complex hardware development Broad mechanical systems knowledge (structures, mechanisms, packaging, integration realities) Strong communication and leadership without relying on org-chart authority Comfort operating in ambiguity and driving crisp decisions with incomplete data Work location within the LA area Nice-to-Have Experience Spacecraft mechanism design (release devices, deployment, latching, pointing structures) Experience supporting environmental testing and verification closure Creo/Windchill experience and ability to guide design quality standards What You’ll Get Ownership – Be a technical anchor in Advanced Programs Innovation – Turn early concepts into executable hardware roadmaps Impact – Shape the next spacecraft generation Compensation – Competitive salary, equity, and comprehensive benefits, including medical, dental, vision, generous leave, HSA, 401(k) matching, and equity participation. Additional Requirements To comply with U.S. Government space technology export regulations, including ITAR, applicants must be a U.S. citizen, lawful permanent resident, protected individual per 8 U.S.C. § 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. Apply now. Help define the mechanical future of Quantum Space.