Point your AI agent at freehire and let it find you a job. A CLI and an MCP server over the whole job API — no browser.
Leads the design and implementation of secure, resilient cybersecurity systems for a defense contractor, embedding Zero Trust and compliance frameworks like NIST SP 800-171 into hardware and software lifecycles.
Design and release complex avionics PCBs for hypersonic missile systems using Altium, ensuring IPC Class 3 compliance and close collaboration with cross-functional engineering teams.
Leads hardware integration and testing for hypersonic weapons systems, transitioning prototypes to production while designing test equipment, troubleshooting failures, and optimizing manufacturing processes for defense applications.
Why Castelion, Why Now Castelion is moving incredibly fast to develop and deliver advanced defense systems at a time when execution matters more than ever. We believe focus and technical excellence are decisive…
Leads a cybersecurity operations team to defend advanced defense systems, run a SOC, hunt threats, and respond to incidents in a highly regulated aerospace/defense environment.
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…
Leads end-to-end design and delivery of high-reliability PCBs for missile systems, including architecture, layout, and integration with embedded processors and high-speed interfaces.
Build and maintain high-fidelity missile simulation software in C++/Rust to test guidance, navigation, and control systems for next-gen long-range strike weapons.
Leads static fire, environmental, and flight tests for solid rocket motors and hypersonic systems, designing test setups, analyzing data, and ensuring safety in high-stakes aerospace/defense programs.
About Castelion Castelion is rapidly developing and delivering advanced defense systems at a time when execution and technical excellence matter more than ever. We move fast, focus hard, and build real capability—not…
About Castelion Castelion is bringing a new approach to defense development and production: short, iterative design cycles, rapid testing, and modern commercial manufacturing strategies built for scale. We're…
Architect and implement cryptographic foundations for embedded flight systems, including secure boot, encryption, code signing, and key management to protect mission-critical defense hardware.
We couldn't check your fit for this role — add a CV to your profile to see it next time.