--- title: Castelion Jobs — Open Roles, Pay and Visa Sponsorship description: Explore Castelion careers developing hypersonic defense systems, propulsion and integrated hardware through iterative testing and manufacturing. type: company url: https://www.foundrole.com/companies/castelion date: 2026-11-13T20:04:16Z og_description: Castelion develops hypersonic defense systems with rapid design iteration, testing and production-oriented manufacturing. Explore its engineering and manufacturing careers. og_image: https://www.foundrole.com/og/zquq2s.png breadcrumbs: - label: Home url: https://www.foundrole.com/ - label: Sectors url: https://www.foundrole.com/sectors - label: Aerospace and Defense url: https://www.foundrole.com/sectors/aerospace-and-defense - label: Defense and Space url: https://www.foundrole.com/sectors/aerospace-and-defense/defense-and-space --- # Castelion Jobs ![Castelion](https://www.foundrole.com/img/dd/companies/uctvqe/m-castelion-com.webp?v=1&utm_source=ai_markdown) Castelion is a privately held U.S. defense technology manufacturer developing hypersonic strike systems. | | | |---|---| | **Headquarters** | Torrance, California, USA | | **Size** | 51-200 employees | | **Industry** | Defense & Space | | **Website** | https://www.castelion.com/ | ## Open jobs at Castelion - Structural Analysis Engineer — Torrance, CA - Senior Propulsion Engineer — Torrance, CA - Senior Propulsion & Ordnance Engineer — 2 locations - Production Coordinator — Torrance, CA - Senior Thermal Engineer — Torrance, CA - Senior Flight Harness Design Engineer — Torrance, CA - Staff Mechanical Design Engineer — Torrance, CA - Senior Propellant Analyst — Torrance, CA - Senior Mechanical Design Engineer — Torrance, CA - Senior Mechanical Systems & Configuration Engineer — Torrance, CA - Propulsion Engineer — Torrance, CA - Propulsion Engineer — Torrance, CA - Mechanism Test Specialist — Torrance, CA - Mechanical Engineer — Torrance, CA - Manager, Development Test — Torrance, CA - Inventory Lead Weekend Shift — Torrance, CA - Inventory Lead — Torrance, CA - Inventory Cost Accounting Manager — Torrance, CA - Driver — Torrance, CA - Director Test — Torrance, CA ## Summary - Postings on employer career sites published Nov 1, 2025 – Nov 13, 2026: 393 - Remote share: 1.3% ## What should I know about Castelion? ### About Founded in 2022 and headquartered in Torrance, California, the company focuses on rapid design iteration, testing and production-scale manufacturing for national defense customers. ### History Castelion was founded in 2022 in Southern California by former SpaceX engineers. The company applies rapid testing and iterative development to defense hardware and is developing its Blackbeard hypersonic strike system. Its public-facing materials emphasize designing hardware for scaled manufacturing. ### Markets and services Castelion's Business Lines Include - Hypersonic weapon systems - develops strike systems, including Blackbeard, for defense customers. - Propulsion and subsystems - develops propulsion and integrated components for its defense hardware. - Testing and scalable manufacturing - applies rapid testing and iterative design to production-oriented hardware manufacturing. - Founded: 2022 ## Frequently Asked Questions ### Is Castelion hiring in the US? Yes. Castelion has 306 open jobs in the US right now, taken from its own careers site. Open a job to see its requirements and how to apply. ### Can I work remotely at Castelion? Castelion has 2 remote jobs in the US right now. Each job sets its own location and work eligibility requirements. ### Does Castelion sponsor H-1B visas? No H-1B filings are linked to Castelion in the U.S. Department of Labor disclosure data for FY2026 Q1 – FY2026 Q4. That is not a guarantee that the employer will refuse sponsorship; ask about the specific role. ### Why don’t some Castelion jobs show pay? Some employer postings do not state a salary. Only postings with stated pay contribute to the pay comparison; a median requires at least 30 salaried postings. An estimate is labelled separately. ### How can I hear about new Castelion jobs? Create a job alert for Castelion to receive matching roles as they appear. 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