Hardware Designed for Production at Scale
Castelion delivers the capabilities America needs to preserve peace through credible, non-nuclear deterrence. We build at the scale national security demands – optimizing every system for cost, manufacturability, and rapid deployment.
Hardware Rich.
Rapid Test and Iteration.
Designed for Scaled Manufacturing.
Affordable Hypersonic Weapons, Built Fast
At Castelion, speed and cost aren’t tradeoffs – they’re requirements. We vertically integrate core technologies to move faster, reduce risk, and control cost at scale. Every system is designed for manufacturability from day one, enabling rapid iteration and high-volume production. In today’s threat environment, speed matters. Affordability matters. We’re building with both.
Protecting Democracy
Our mission is rooted in the belief that freedom must be actively protected – through technological strength, strategic clarity, and national resolve. By restoring America’s ability to out-innovate and out-produce its rivals, we help ensure that the free world remains secure for generations to come.
Hardware Rich
Rapid Testing
Iterative Design
America Needs You!
Ready to get your hands on real hardware, own critical projects, and make your work count? Explore our open roles and help shape the future of defense.
Featured Positions
Choose your next adventure with Castelion.
Castelion News
Castelion Awarded $105M U.S. Navy Contract to Field Blackbeard on the F/A-18 Super Hornet in 2027
Today, Castelion announced that it was awarded a $105M contract by the U.S. Navy to continue efforts to integrate its Blackbeard hypersonic strike weapon onto the F/A-18 and transition the system to an Early Operational Capability in 2027. Under this award, Castelion will conduct extensive system safety and certification testing, flight testing, and other integration activities related to carrier-based operations.
Castelion Awarded $49.9M Navy Contract to Advance Blackbeard Hypersonic Strike Weapon
Castelion announced today that the U.S. Navy awarded $49,998,005 to advance Blackbeard from prototype to integrated, early operational capability. Work will be performed in Torrance, California and is expected to be completed in November 2027. The Blackbeard contract award supports the U.S. Navy’s strategy to pursue new approaches to quickly move capability to the Fleet while maintaining operational rigor.
Blackbeard, Castelion’s first product, is engineered for mass production and rapid fielding from inception. The system leverages vertically integrated propulsion and guidance subsystems to achieve performance at a fraction of the cost of legacy weapons, supporting the Department of War’s objective of building credible, nonnuclear deterrent capacity at scale.
Castelion Breaks Ground on Project Ranger, Advancing Scaled Hypersonic Manufacturing in New Mexico
Castelion today announced the launch of Project Ranger, a 1,000-acre hypersonic manufacturing campus in Sandoval County, designed to support high-cadence production of hypersonic strike systems. This new 1,000-acre manufacturing campus will invest more than $220 million, create 300+ high-paying jobs, and generate over $650 million in economic impact for New Mexico.