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Senior Test Engineer - Advanced Manufacturing

Hawthorne, CA

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

Quantum Space is seeking a Mechanical Test Engineer III with deep expertise in vacuum systems to lead the development and operation of vacuum test infrastructure. This role is critical to validating spacecraft hardware in relevant environments and requires strong hands-on and analytical capability.

Where You’ll Make an Impact

  • Design and develop vacuum test systems and infrastructure
  • Define requirements for vacuum performance, instrumentation, and control
  • Own vacuum system operation during test campaigns
  • Troubleshoot leaks, contamination, and system performance issues
  • Develop vacuum test procedures and verification plans
  • Support integration of hardware into vacuum environments
  • Specify and integrate pumps, valves, gauges, and control systems
  • Collaborate with mechanical and AI&T teams to ensure test readiness

What It Takes

  • Bachelor's degree or Master's degree in Mechanical Engineering, Aerospace Engineering, or related technical field
  • 5–10+ years of experience with vacuum systems
  • Deep knowledge of high/ultra-high vacuum systems and components
  • Experience with leak detection (helium mass spectrometry)
  • Experience operating and troubleshooting vacuum systems
  • Strong hands-on lab/test experience
  • Work location within the LA area

Nice-to-Have Experience

  • Experience with spacecraft or aerospace testing
  • Familiarity with LabVIEW, Python, or data acquisition systems
  • Experience with thermal vacuum testing

What You’ll Get

  • Ownership – Lead the development, operation, and continuous improvement of vacuum test systems that support spacecraft qualification and mission readiness.
  • Innovation – Design and optimize advanced vacuum testing capabilities that enable reliable validation of next-generation spacecraft hardware in flight-relevant environments.
  • Impact – Play a critical role in ensuring spacecraft systems perform as intended by delivering high-quality test data, resolving complex technical challenges, and supporting successful mission execution.
  • Growth – Expand your expertise in spacecraft testing, environmental qualification, and test infrastructure while helping shape the future of Quantum Space's verification and validation capabilities.
  • Compensation – Competitive salary, equity, and comprehensive benefits including medical, dental, vision, generous leave, HSA, 401(k) matching, and equity sharing.

Location: Hawthorne, CA

Base Salary: $125,000 to $180,000 

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 required authorizations.

Apply now. Join us in building the next generation of spacecraft.

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