Castelion Corporation

Castelion is a venture-backed defense tech company applying modern hardware development and manufacturing processes to critical national security challenges, specifically to solve affordability, scale, and supply chain robustness. The company combines vertical integration, rapid iteration, and high-

• Team: 51-200
• Headquarters: El Segundo, CA, USA
• Funding: Series B
• Sectors: Govtech, Defense, Industrial

245 open roles

• Senior Production Technician - Bonding — Torrance, CA
• Composites Technician — Torrance, CA
• Senior Production Technician - Mechanisms — Torrance, CA
• Lead Avionics Technician - Harnessing — Torrance, CA
• Manager, Energetics Test Engineering — Rio Rancho, NM
• Avionics Lead – Integration / Electromechanical — Torrance, CA
• Lead Avionics Technician - PCBA — Torrance, CA
• COMSEC Manager — Torrance, CA
• Lead, Mission Software Engineer — Torrance, CA
• Senior Manufacturing Engineer, Equipment — Rio Rancho, NM
• Lead Embedded Software Engineer — Rio Rancho, NM
• Industrial Hygienist — Rio Rancho, NM
• Dangerous Goods Logistics Driver — Torrance, CA
• Hazardous Materials Logistics Specialist — Rio Rancho, NM
• Mission Software Engineer — Torrance, CA
• Buyer, Indirect Procurement — Torrance, CA
• Manufacturing Engineer, Mechanical Assembly — Torrance, CA
• Industrial Engineer, Mechanical Assembly — Torrance, CA
• Senior FPGA Engineer — Allen, TX
• Lead Integration and Test Technician — Rio Rancho, NM
• Near Field Test and Automation Lead — Allen, TX; Rio Rancho, NM
• Senior Supply Chain Planner — Torrance, CA
• Senior RF Systems Engineer — Allen, TX
• EHS Engineer — Midland, TX
• Avionics Manufacturing Specialist, Harnessing — Torrance, CA
• Engineering Lab Manager — Torrance, CA
• Senior Manufacturing Engineer, Igniters and Pyrotechnics — Rio Rancho, NM
• EHS Specialist — Torrance, CA
• HR Coordinator — Torrance, CA
• Staff Mechanical Design Engineer — Torrance, CA
• Senior Manufacturing Engineer – Sheet Metal Forming & Welding — Torrance, CA
• Senior Manufacturing Engineer, Structural Bonding — Torrance, CA
• Senior Manufacturing Engineer, Nozzles — Torrance, CA
• Automation & Controls Engineer — Torrance, CA
• Test Engineer — Rio Rancho, NM
• Avionics Production Scheduler — Torrance, CA
• Avionics Integration Technician — Torrance, CA
• Avionics Harness Technician — Torrance, CA
• Lead Manufacturing Engineer, Harnessing — Torrance, CA
• Manufacturing Planner – Composites — Torrance, CA
• Manufacturing Engineer – Composite Motor Cases — Torrance, CA
• Materials & Process Engineer, Densification — Torrance, CA
• Explosives Safety & Operations Officer — Rio Rancho, NM
• Avionics Test Software Engineer, Senior, Lead, Staff — Torrance, CA
• Sr. Materials & Process Engineer, Energetic Materials — Torrance, CA, Rio Rancho, NM
• Manufacturing Engineer - General — Torrance, CA
• Composites R&D Technician – Chemical Vapor Deposition (CVD) — Torrance, CA
• Avionics Technician Specialist — Torrance, CA
• Facilites Coordinator — Torrance, CA, Midland - Texas
• Commodity Manager — Torrance, CA
• Global Supply Manager — Torrance, CA
• Facilities Technician — Torrance, CA
• Avionics Systems Integration Engineer, Senior — Torrance, CA
• R&D Technician- Structural Welding — Torrance, CA
• Production Supervisor — Torrance, CA
• Inspector - Avionics/Electrical — Torrance, CA
• Dimensional and Mechanical Inspector — Torrance, CA
• CMM Programmer — Torrance, CA
• Materials Management Supervisor — Torrance, CA
• Avionics R&D Technician - PCBA, Multiple Levels — Torrance, CA
• R&D Technician — Midland, TX
• Lead Manufacturing Engineer, Radar — Torrance, CA; Rio Rancho, NM
• Supervisor – R&D (Nightshift) — Torrance, CA
• Industrial Engineer, Avionics — Torrance, CA
• Materials and Process Engineer, Impregnation — Torrance, CA
• Sr. Materials & Process Engineer, Materials Characterization — Torrance, CA
• Manufacturing Engineer - Bonding — Torrance, CA
• Site Reliability Engineer — Allen, TX, Torrance, CA
• Senior Aerothermal & CFD Engineer — Torrance, CA
• Senior Supplier Development & Quality Engineer — Torrance, CA; Rio Rancho, NM; Allen, TX
• Senior Propellant Analyst — Torrance, CA
• Senior Mechanical Design Engineer — Torrance, CA
• Senior Applied AI Engineer — Torrance, CA
• Proposal Manager — Torrance, CA
• Security Officer I (Armed) — Rio Rancho, NM
• Weapons Integration Engineer (Multiple Levels) — Torrance, CA
• Tooling Engineer, Senior — Torrance, CA; Rio Rancho, NM
• Systems Test Engineer — Allen, TX
• Supervisor, Physical Security (Armed) — Rio Rancho, NM
• Sr. Buyer, Avionics, Strategic Sourcing — Torrance, CA
• Senior System Safety Engineer — Torrance, CA
• Propulsion Engineer — Torrance, CA
• Senior Manufacturing Engineer - Machining — Torrance, CA
• Senior Manager – Cybersecurity Operations — Torrance, CA
• Senior Cybersecurity Architect — Torrance, CA
• Senior Cybersecurity Analyst — Torrance, CA
• Senior Manufacturing Engineer – Warhead Integration & Test — Torrance, CA; Rio Rancho, NM
• Lead Avionics Engineer — Rio Rancho, NM
• Senior Accountant — Torrance, CA
• Recruiting Coordinator — Torrance, CA
• Program Manager — Torrance, CA
• Radar Algorithm Engineer — Allen, TX
• PCB Layout Engineer — Torrance, CA; Rio Rancho, NM
• Mission Integration Engineer — Torrance, CA
• Mission Design Engineer — Torrance, CA
• Mechanical Engineer Intern (Winter/Spring 2027) — Torrance, CA
• Mechanical Engineer — Torrance, CA; Rio Rancho, NM
• Senior Mechanical Systems & Configuration Engineer — Torrance, CA
• Manufacturing Engineer, PCBA — Torrance, CA
• Manufacturing Engineer, Harnessing — Torrance, CA
• IT Network Engineer — Rio Rancho, NM
• Integration & Test Engineer, Senior — Torrance, CA; Rio Rancho, NM
• Information Systems Security Manager (ISSM) — Torrance, CA
• Information System Security Officer (ISSO) — Torrance, CA
• HWIL FPGA Engineer — Allen, TX
• Human Resources Business Partner — Torrance, CA
• HITL Test Infrastructure Engineer — Allen, TX
• Electrical Engineer — Allen, TX
• Director, Business Development – Air Force Programs — Torrance, CA; Washington, DC
• Contracts Manager — Torrance, CA
• Avionics Test Engineer — Torrance, CA
• Avionics Hardware Engineer — Torrance, CA; Rio Rancho, NM
• Avionics Hardware Engineer, Senior, Staff — Torrance, CA; Rio Rancho, NM
• Avionics Harness Design Engineer — torrance, ca, usa
• EHS Technician — torrance, ca, usa
• Manufacturing Engineer, Materials Manufacturing — torrance, ca, usa
• GNC Engineer — torrance, ca, usa
• Staff Dimensional Metrology Engineer — torrance, ca, usa
• GNC Engineer - Actuation Systems — torrance, ca, usa
• Senior Thermal Engineer — torrance, ca, usa
• Senior Tooling Fab Supervisor — torrance, ca, usa
• Senior Logistics Specialist — rio rancho, nm, usa
• Facilities Coordinator
• Software Security Engineer — torrance, ca, usa
• Senior NDE Level II Technician — torrance, ca, usa
• Accounts Payable (AP) Specialist — torrance, ca, usa
• Avionics Manufacturing Supervisor
• Lead Manufacturing Engineer - Avionics
• Avionics Manufacturing Engineer, Electrical Integration — torrance, ca, usa
• Environmental Manager — torrance, ca, usa
• Structural Dynamics Engineer — torrance, ca, usa
• Senior Avionics Systems Engineer — torrance, ca, usa
• Instructional Designer — torrance, ca, usa
• Manufacturing Engineer, Propellant — torrance, ca, usa
• Site Operations Manager — Midland, TX, USA
• Human Resources Manager — rio rancho, nm, usa
• Energetics Safety Manager — rio rancho, nm, usa
• Deputy Program Engineer, Hypersonic Strike — torrance, ca, usa
• Materials Engineer - Chemist — torrance, ca, usa
• SEM (Scanning Electron Microscopy) Characterization Technician — torrance, ca, usa
• Senior Guidance Systems Engineer — rio rancho, nm, usa
• Materials Engineer - Flight Vehicle Support — torrance, ca, usa
• Materials Engineering - Equipment Engineer (Automation & Controls) — torrance, ca, usa
• Materials & Process Technician - CVD (Night Shift, 230pm to 1130pm) — torrance, ca, usa
• Director, Business Development - Air Force Programs — Washington, DC, USA
• Principal Build Reliability Engineer — torrance, ca, usa
• Structural Analysis Engineer — torrance, ca, usa
• Manufacturing Engineer, Equipment — torrance, ca, usa
• Furnace Technician, Ceramic Matrix Composites — torrance, ca, usa
• Manager, Government and Community Affairs, Project Ranger — rio rancho, nm, usa
• Electrical Engineer Intern - Fall 2026 (Avionics) — torrance, ca, usa
• Senior Test Engineer — torrance, ca, usa
• Quality Systems Engineer — torrance, ca, usa
• Senior Manufacturing Engineer, Solid Rocket Motors — torrance, ca, usa
• Ground Software Engineer — torrance, ca, usa
• Manufacturing Engineer, Chemical Vapor Deposition — torrance, ca, usa
• Industrial Chemical Engineer - Wet Chemistry
• Chemical Technician - Wet Chemistry — torrance, ca, usa
• Shipping and Receiving Specialist — torrance, ca, usa
• Machining Apprentice, Additive Manufacturing — torrance, ca, usa
• Avionics Hardware Engineer (All Levels) — torrance, ca, usa
• Senior Avionics Test Engineer — torrance, ca, usa
• Lead Avionics Test Engineer — torrance, ca, usa
• Composites Technician - Filament Winding — torrance, ca, usa
• Materials Engineer - High Temperature Composites — torrance, ca, usa
• Construction Project Manager — torrance, ca, usa
• CNC Machinist — torrance, ca, usa
• Senior Warhead Design Engineer — rio rancho, nm, usa
• Manager, Social Media & Strategic Communications — torrance, ca, usa
• Avionics R&D Tech II/Senior (Integration) — torrance, ca, usa
• Avionics R&D Tech II/Senior (PCBA) — torrance, ca, usa
• Senior Power Electronics Engineer — rio rancho, nm, usa
• Senior Control Electronics Engineer — rio rancho, nm, usa
• Senior Autonomous Flight Termination System Hardware Engineer — rio rancho, nm, usa
• Materials & Process, Program Support Manager — torrance, ca, usa
• Senior Manufacturing Engineer — torrance, ca, usa
• Senior Mechanical Design Engineer (Structures & Thermal Protection Integration) — rio rancho, nm, usa
• Senior Propulsion Engineer (Rocket Motors) — rio rancho, nm, usa
• Senior Mechanisms Engineer (TVC Actuation) — rio rancho, nm, usa
• Senior Mechanical Design Engineer (RF Systems & Radomes) — rio rancho, nm, usa
• Senior Mechanisms Engineer — rio rancho, nm, usa
• Senior Mechanical Design Engineer (ACS Systems) — rio rancho, nm, usa
• Senior GNC Engineer (Navigation) — rio rancho, nm, usa
• Senior Structures & Composites Engineer (Rocket Motor Cases) — rio rancho, nm, usa
• Senior Thermal & TPS Integration Engineer — rio rancho, nm, usa
• Senior Propulsion Engineer (Rocket Motor Soft Goods) — rio rancho, nm, usa
• Senior Propulsion & Ordnance Engineer — rio rancho, nm, usa
• Logistics and Materials Operations Lead — rio rancho, nm, usa
• Facilities Manager — rio rancho, nm, usa
• People Operations Specialist — torrance, ca, usa
• Tooling, Automation & Controls Manager — torrance, ca, usa
• Office Manager — Washington, DC, USA
• Flight Software Engineer (All Levels)
• Build Reliability Engineer
• Senior Materials & Process Engineer, Materials Testing
• Lead R&D Technician — torrance, ca, usa
• Senior Manufacturing Engineer, Filament Winding
• Avionics Manufacturing Specialist (PCBA) — torrance, ca, usa
• Senior Legal Counsel, Government Contracts — Washington, DC, USA
• Senior Propulsion Engineer — torrance, ca, usa
• Production Supervisor - R&D — torrance, ca, usa
• Senior GNC Engineer — torrance, ca, usa
• EMI EMC Engineer — torrance, ca, usa
• Manager, Development Test — torrance, ca, usa
• Lead Flight Software Engineer — torrance, ca, usa
• Senior R&D Technician - Mechanisms — torrance, ca, usa
• Product Security Architect, Embedded Systems — torrance, ca, usa
• Senior Embedded Software Engineer — Allen, TX, USA
• Senior Technical Sourcer (Contract) — torrance, ca, usa
• Composites Specialist - Chemical Vapor Deposition (CVD) — torrance, ca, usa
• Shipping and Receiving Associate — torrance, ca, usa
• Lead Integration & Test Engineer — torrance, ca, usa
• Senior Composites R&D Technician - Layup — torrance, ca, usa
• Senior Materials & Process Engineer, Non-Metals — torrance, ca, usa
• Dimensional/Mechanical Inspector — torrance, ca, usa
• Production Scheduler — torrance, ca, usa
• Inventory Specialist — torrance, ca, usa
• Launch R&D Technician — torrance, ca, usa
• Senior Manufacturing Engineer, Radar — Allen, TX, USA
• Senior Manufacturing Engineer - Warhead Integration & Test — torrance, ca, usa
• R&D Technician - Structural Welding — torrance, ca, usa
• Senior Materials & Process Engineer, Propellant Mix & Cast — torrance, ca, usa
• Avionics Reliability Engineer — torrance, ca, usa
• Inventory and Cost Accounting Manager — torrance, ca, usa
• Manufacturing Specialist (Solid Rocket Motor Production) — Midland, TX, USA
• Flight Test Engineer — torrance, ca, usa
• Production Coordinator — torrance, ca, usa
• PCB Layout Engineer, Senior — torrance, ca, usa
• PCB Librarian — torrance, ca, usa
• Development Test Engineer — torrance, ca, usa
• Director of Manufacturing — rio rancho, nm, usa
• Senior Integration & Test Engineer — torrance, ca, usa
• Senior Simulation Software Engineer, GNC — torrance, ca, usa
• Senior Manufacturing Engineer - Propellant Mixing & Casting
• Lead Manufacturing Engineer - Motors
• Technical Recruiter — torrance, ca, usa
• Automation and Controls Engineer — torrance, ca, usa
• Lead Avionics Engineer - Flight Termination System — torrance, ca, usa
• Senior PCB Design Engineer — torrance, ca, usa
• Embedded Software Engineer (All Levels) — torrance, ca, usa
• Senior Avionics Systems Integration Engineer — torrance, ca, usa
• Staff Electrical Engineer - Flight Computers — torrance, ca, usa
• Systems Integration & Test Engineer, Avionics (All Levels) — torrance, ca, usa
• Senior Manufacturing Engineer - Composites — torrance, ca, usa
• Embedded Software Engineer Intern - Fall 2026 — torrance, ca, usa