Mechanical Engineer Jobs

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Mechanical Engineer III

Quantum Space•Hawthorne, MD

About The Position

Quantum Space is seeking an experienced Mechanical Engineer III to lead the design, development, integration, and testing of flight hardware for next-generation spacecraft programs. The engineer will own mechanical components and subsystems throughout the hardware development lifecycle, from requirements definition and detailed design through manufacturing, assembly, integration, and testing. The role supports the performance, reliability, and manufacturability of mission-critical spacecraft hardware and involves close collaboration with mechanical engineering, systems engineering, assembly, integration and test (AIT), and manufacturing teams. It is suited to an engineer with strong mechanical design expertise, hands-on flight hardware development experience, and the ability to lead technical execution independently in a fast-paced, collaborative environment. The position is based in Rockville, Maryland, or Hawthorne, California. The stated base salary range is $125,000–$175,000, with competitive equity and comprehensive benefits. Applicants must meet the stated U.S. Government space technology export-control eligibility requirements.

Requirements

  • Bachelor's or master's degree in Mechanical Engineering or a related field.
  • At least 7 years of relevant experience with aerospace or space hardware development.
  • Proficiency in Creo.
  • Working knowledge of Windchill or a similar product lifecycle management (PLM) system.
  • Strong GD&T fundamentals, including ASME Y14.5, and disciplined drawing-package quality.
  • Experience supporting hardware through build and test cycles, rather than working only on design.

Nice To Haves

  • Spacecraft integration experience, including mass properties, alignment, configuration capture, and as-built management.
  • Experience writing or reviewing work instructions or build travelers.
  • Familiarity with environmental testing and test readiness processes.

Responsibilities

  • Own mechanical components and subsystems end-to-end, including requirements, design, coordination of analysis, release, and integration support.
  • Develop CAD models and drawings in Creo; apply GD&T and define inspectable requirements.
  • Drive interface closure, including envelopes and keep-outs, fastener patterns, datums, alignment needs, and harness and thermal accommodations.
  • Support spacecraft build and integration through issue triage, rapid root-cause collaboration, and corrective design updates.
  • Develop and execute verification plans, including functional checks, fit checks, environmental test preparation support, and generation of acceptance and qualification evidence.
  • Support preliminary and critical design reviews (PDR/CDR), test readiness reviews, and configuration boards with clear technical content.
  • Coordinate with suppliers and procurement by clarifying requirements, reviewing vendor designs, and supporting receiving and inspection disposition.

Benefits

  • Competitive salary.
  • Equity grants and equity sharing.
  • Medical benefits.
  • Dental insurance.
  • Vision insurance.
  • Generous leave.
  • Flexible spending account (FSA).
  • 401(k) matching.

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