Weapons Integration Engineer

Castelion Corporation • Torrance, CA

4d

About The Position

Castelion brings a new approach to defense development and production: short, iterative design cycles, rapid testing, and modern commercial manufacturing strategies for production at scale. We design, build, and test next-generation long-range strike weapons systems to give America and its Allies a decisive edge and deter future conflicts. Weapons Integration Engineer As a Weapons Integration Engineer you will be part of the team that ensures Castelion weapon systems integrate seamlessly with ground launchers, tactical/multi-role aircraft, and future systems. You will own platform integration efforts from early concept and capability studies through prototype development, test, and operational deployment - collaborating with propulsion, avionics, GNC, software, flight test, and manufacturing teams to deliver mission-ready solutions.

Requirements

• Bachelors degree in aerospace, mechanical, electrical engineering, physics, or related technical field.
• 2+ years experience in systems engineering, mission/weapon integration, or related roles within defense or aerospace.
• 2+ years experience in technical project management or weapons system development.
• Hands-on experience with launch vehicles, weapons systems, system integration, or aerospace defense platforms
• Experience working with the DoD or other national security agencies.
• Strong analytical skills: ability to synthesize complex technical information and communicate effectively to engineers and non-technical stakeholders.
• Ability to obtain and maintain Top Secret/SCI clearance.
• Ability to travel up to 25% for customer meetings, test campaigns, and program execution.

Nice To Haves

• Masters degree in a relevant technical field.
• Hands-on experience with hypersonic weapons, missile defense, or platform integration
• Strong background in mission design, development, integration, and test for missiles, spacecraft, or similar systems.
• Demonstrated success integrating weapons or sensors with tactical aircraft and/or ground-based launch systems.
• Active Top Secret/SCI clearance preferred.

Responsibilities

• Serve as the primary technical liaison between Castelion and government customers, platform manufacturers, and other external stakeholders to ensure alignment between mission requirements and system designs.
• Support development of advanced weapon concepts and technologies, with emphasis on missile integration for ground launchers and tactical aircraft.
• Develop, maintain, and execute fast-paced integration plans and schedules to deliver and field weapon systems.
• Lead mission planning, verification, and test efforts (including live-fire and flight tests): pre-test analysis, real-time mission support, and post-test evaluation and reporting.
• Review and assess interface specifications, drawings, and design documents for functional, electrical, software, and physical interfaces; identify and close interface gaps.
• Collaborate across internal engineering teams (propulsion, avionics, GNC, software, flight test, manufacturing) to perform design trades and optimize overall system performance with a focus on platform compatibility.
• Develop and coordinate technical specifications, integration documentation, and certification/supporting artifacts required for customer acceptance and regulatory compliance.
• Represent Castelion at customer meetings, design reviews, test campaigns, and demonstrations.
• Ensure contract deliverables meet customer requirements, schedule, and quality standards.

Benefits

• All employees are granted long-term stock incentives as part of their employment as Castelion.
• All employees receive access to comprehensive medical, vision, and dental insurance, and the company offers four weeks of paid time off per year.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level