Senior Warhead Design Engineer

Castelion CorporationTorrance, CA

About The Position

Castelion is designing and building next-generation hypersonic weapon systems that restore stability through credible deterrence. We are seeking a hands-on, mission-driven Senior Warhead Design Engineer to lead the design, development, and integration of ordnance systems across our hypersonic vehicles. This is a high-impact role for someone with deep expertise in energetic devices and safe & arm mechanisms, who thrives in a fast-paced, hardware-rich development environment.

Requirements

  • B.S. or M.S. in Mechanical Engineering, Aerospace Engineering, or related field.
  • 5+ years of experience in ordnance or energetics design, analysis, and test
  • Familiarity with relevant DoD and NASA standards (e.g., MIL-STD-1901A, RCC 319, etc.).
  • Hands-on test experience in high-consequence environments.
  • Strong communication and documentation skills.
  • Active or eligible for a U.S. security clearance.

Nice To Haves

  • Experience working with DoD customers and navigating military qualification processes.
  • Background in hypersonics, missile systems, or space launch vehicles.
  • CAD and mechanical analysis experience (e.g., SolidWorks, FEA tools).
  • Prior experience working at a defense startup or fast-moving development organization.

Responsibilities

  • Own the design, development, and qualification of ordnance systems, including: Initiators, detonators, transfer charges, explosive bolts, safe & arm devices.
  • Define requirements and interface specifications across mechanical, electrical, and software boundaries.
  • Lead supplier engagement, component selection, and build-to-print efforts with a focus on manufacturability, cost, and performance.
  • Drive development test planning, execution, and analysis for ordnance systems (including arena testing, function testing, and environmental qualification).
  • Work closely with systems, propulsion, and GNC teams to ensure ordnance components integrate safely and effectively into the full weapon system.
  • Support FMEA, fault-tree analysis, and safety case development.
  • Own documentation and compliance to MIL-STD-1901A, AFSPCMAN 91-710, and other relevant standards.

Benefits

  • All employees are granted long-term stock incentives as part of their employment at Castelion.
  • All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.
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