Senior Warhead Design Engineer

Castelion Corporation•Rio Rancho, NM

3h•Onsite

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 advanced next-generation systems for our long-range hypersonic strike 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-1316, MIL-STD-1901A, etc.).
Hands-on test experience in high-consequence environments.
Strong communication and documentation skills.
Active or eligible for a U.S. security clearance.
U.S. citizenship is required.

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).
Experience with additive manufacturing tools and capabilities.
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, avionics, 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-1316, MIL-STD-1910, AFSPCMAN 91-710, and other relevant standards.

Benefits

Meaningful long-term equity
Four (4) weeks of paid time off
Ten (10) company-paid holidays
Comprehensive health benefits - including 100% employee-covered medical and strong dependent coverage
Dental and vision plans
Paid parental leave
$100 monthly fitness stipend
Onsite EV charging
Catered meals
Company-covered food during high-demand periods
Fully stocked kitchen