Principal Mechanical Engineer - Advanced Programs

Principal Mechanical Engineer - Advanced ProgramsEngineering - Hawthorne, CaliforniaWho We're Looking ForQuantum 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 ImpactLead mechanical architecture and trade studies: packaging, mechanism concepts, structural layout, thermal hardware accommodation, serviceability, and integration strategyOwn subsystem/interface definitions and drive closure with systems engineering: ICD inputs, keep-outs, access constraints, mass properties, alignment and stability needsDrive mechanical design maturation from concept to preliminary/detailed design: requirements, sizing logic, margins and assumptions, verification strategyLead 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 updatesPartner with procurement and suppliers: SOW technical inputs, technical evaluation, vendor coordination, design for manufacturability feedback loopsDeliver review-quality content: architecture rationale, risk posture, verification approach, and build/test readinessWhat It TakesBS or MS in Mechanical Engineering or related field10+ years mechanical engineering experience, with sustained ownership of complex hardware developmentBroad mechanical systems knowledge (structures, mechanisms, packaging, integration realities)Strong communication and leadership without relying on org-chart authorityComfort operating in ambiguity and driving crisp decisions with incomplete dataWork location within the LA areaNice-to-Have ExperienceSpacecraft mechanism design (release devices, deployment, latching, pointing structures)Experience supporting environmental testing and verification closureCreo/Windchill experience and ability to guide design quality standardsWhat You'll GetOwnership - Be a technical anchor in Advanced ProgramsInnovation - Turn early concepts into executable hardware roadmapsImpact - Shape the next spacecraft generationCompensation - Competitive salary, equity, and comprehensive benefits, including medical, dental, vision, generous leave, HSA, 401(k) matching, and equity participation.Additional Requirements