Principal Mechanical Engineer - Advanced Programs

Principal Mechanical Engineer

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.

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

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

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

Ownership – Be a technical anchor in Advanced Programs

Innovation – Turn early concepts into executable hardware roadmaps

Impact – Shape the next spacecraft generation

Competitive salary, equity, and comprehensive benefits, including medical, dental, vision, generous leave, HSA, 401(k) matching, and equity participation.

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.