[İş Radarı](https://jobradar.live/) / [Jobs](https://jobradar.live/ilanlar) / Mechanical Engineer III - Spacecraft Programs Active On-site Rockville, MD or Hawthorne, CA Posted · 20.09.2026 Greenhouse (US) # Mechanical Engineer III - Spacecraft Programs Quantum Space Quantum Space is redefining mobility and maneuverability in space. Our high-mobility spacecraft platforms support national security, civil, and commercial missions with unmatched flexibility and propulsion capability. We build fast and iterate quickly. Who We’re Looking For We are seeking a Senior Mechanical Engineer to own flight hardware development on our Spacecraft Programs. This role is built for an engineer who can take a subsystem/component from requirements to a released design, through build, integration, and test—while collaborating tightly with AIT and manufacturing. Senior-level expectations include independent ownership of deliverables and leadership of technical execution for meaningful scopes. Where You’ll Make an Impact Own mechanical components/subsystems end-to-end: requirements, design, analysis coordination, release, and integration support Develop CAD and drawings in Creo; apply GD&T and define inspectable requirements Drive interface closure: envelope/keep-outs, fastener patterns, datums, alignment needs, harness/thermal accommodations Support spacecraft build and integration: issue triage, rapid root-cause collaboration, and corrective design updates Develop and execute verification plans: functional checks, fit checks, environmental test prep support, and acceptance/qualification evidence generation Support design reviews (PDR/CDR), test readiness reviews, and configuration boards with clear technical content Coordinate with suppliers and procurement: clarify requirements, review vendor designs, and support receiving/inspection disposition What It Takes Bachelor's degree or Master's degree in Mechanical Engineering or related field 7+ years relevant experience with aerospace/space hardware development  Proficiency in Creo; working knowledge of Windchill or similar PLM Strong GD&T fundamentals (ASME Y14.5) and drawing package quality discipline Experience supporting hardware through build/test cycles, not just design-in-a-vacuum Work location within the DMV area Nice-to-Have Experience Spacecraft integration exposure: mass properties, alignment, configuration capture, as-built management Experience writing or reviewing work instructions / build travelers Familiarity with environmental testing and test readiness processes What You’ll Get Ownership – Real flight hardware responsibility Innovation – Solve challenging mechanical design, integration, and verification problems while advancing the spacecraft technologies that enable next-generation space mobility. Impact – Direct contribution to mission success Growth – Path to subsystem leadership and principal ownership Compensation – Competitive salary, equity, and comprehensive benefits including medical, dental, vision, generous leave, HSA, 401(k) matching, and equity participation. Location: Rockville, MD Base Salary: $145,000 to $195,000  The salary range for this role is an estimate based on a wide range of compensation factors. Actual salary offer may vary based on (but not limited to) work experience, education and/or training, critical skills, and/or business considerations. Highly competitive equity grants are included in the majority of full time offers; and are considered part of Quantum Space's total compensation package. 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. Join us in building the next generation of spacecraft. This job was verified from Greenhouse (US). Applications are completed on the original source. [Apply on the original listing ↗](https://jobradar.live/ilan/34f654cd-517a-409c-b6a6-d0a3ee064346/git) ## Stop searching one by one for roles like this. Upload your resume or enter your target roles to see your first 3 matches for free. [Find jobs for me →](https://jobradar.live/uye/kayit) Your resume is never shared with employers; it is processed only for matching. 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