Senior NDE Engineer - Solid Rocket Motors

About Castelion

Castelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production  are designing, building, and testing next generation long range strike weapons systems to give America and its Allies a definitive edge and deter future conflicts.

Castelion is seeking a Senior NDE Engineer to own all non‑destructive evaluation activities for our solid rocket motor programs. In this role, you will develop, qualify, and deploy advanced inspection techniques capable of detecting critical flaws in large energetic articles while supporting aggressive production rates. You will serve as the technical authority on radiographic, ultrasonic, and emerging NDE methods in a high‑hazard, ITAR‑regulated environment.

Own the full NDE lifecycle for solid propellant motors: technique development, procedure creation, personnel training, equipment selection, and daily execution. Establish repeatable, high‑confidence inspection processes for propellant voids, case‑bond anomalies, liner/insulator disbonds, inhibitor cracks, and nozzle defects.

Architect and qualify next‑generation NDE solutions including digital radiography (DR), computed tomography (CT), phased‑array ultrasonics (PAUT), thermography, and shearography. Implement automated defect recognition (ADR) to support rate production.

Design and implement high‑throughput inspection cells (robotic manipulators, conveyorized X‑ray, real‑time CT reconstruction). Reduce inspection cycle time while maintaining or improving probability of detection (POD) for critical flaw sizes.

Author and maintain NADCAP‑compliant NDE procedures, technique sheets, and Level III responsibilities. Serve as an interface with customer and regulatory bodies during source inspections, audits, and qualification reviews.

Lead NDE support for root‑cause investigations of in‑process and flight anomalies. Provide rapid, high‑fidelity imaging and interpretation to disposition non‑conformances and prevent schedule impacts.

Identify, evaluate, and deploy emerging NDE technologies (e.g., high‑energy CT for thick‑section propellant, AI‑assisted ultrasonics). Lead capital projects for new inspection bays, radiation vaults, and explosive‑compatible equipment.

Partner with Manufacturing Engineering to design inspectable features into new motor designs. Work with Quality and EHS to ensure radiation safety, explosive quantity‑distance compliance, and personnel qualification.

• Bachelors degree in Engineering, Physics, Materials Science, or related field.
• Minimum 710 years of hands‑on NDE experience, preferably in the Aerospace industry.
• Active Secret clearance (or ability to obtain). U.S. Person required for ITAR compliance.

• Proven track record developing and qualifying NDE techniques for large solid rocket motors (30 in diameter, case‑bonded grains).
• Deep expertise in digital radiography systems, high‑energy linear accelerators, and industrial CT reconstruction software.
• Experience achieving NADCAP accreditation for NDE in propulsion or explosives environments.
• Hands‑on implementation of automated defect recognition and phased‑array UT on complex geometries.
• Prior work supporting rapid‑response anomaly investigations on strategic or launch vehicle programs.
• Strong aptitude for scripting (Python, MATLAB) to automate image processing and reporting.
• Demonstrated ability to train and certify Level I/II technicians in high‑hazard environments.

• Bias to Action and Creative Problem Solving. Desire and experience questioning assumptions in ways that lead to breakthrough ideas that are ultimately implemented. Successfully bring in applicable processes/concepts/materials from other industries to achieve…