Castelion · 2 days ago
Mission Integration Engineer
Torrance, CA
Full-time
Hybrid
Entry, Mid Level
$130K/yr - $185K/yr
2+ years expCastelion is a company focused on innovative defense development and production, emphasizing rapid design cycles and modern manufacturing strategies. The Mission Integration Engineer will serve as the primary technical liaison with government customers, overseeing the integration of advanced weapon systems into operational environments and driving the lifecycle of weapons programs from concept to deployment.
AerospaceGovernmentManufacturingMilitaryNational Security
No H1B
Security Clearance RequiredU.S. Citizen OnlyHiring Manager
Nicholas Sparks
Responsibilities
Serve as a customer interface, ensuring alignment between government mission requirements and Castelion’s weapon system designs
Support all phases of the program from concept development and initial proposals through successful test, flight, and deployment
Lead mission planning and test efforts, ensuring end-to-end system integration and operational readiness
Work across internal teams to develop and execute prototype development strategies, ensuring timely delivery of cutting-edge weapons solutions
Collaborate with engineers and leads to optimize weapons system performance through design trades and cross-discipline coordination
Represent Castelion at customer meetings, design reviews, test campaigns, and technical demonstrations
Ensure contract deliverables are met on time and to customer specifications
Provide technical leadership in weapons system verification and test planning, ensuring robust validation and mission success
Support live-fire and flight test operations, including pre-test analysis, real-time mission support, and post-test evaluation
Maintain an in-depth understanding of government acquisition processes, certification requirements, and compliance standards
Qualification
Required
Strong passion for advancing national security and a deep commitment to developing cutting-edge defense technologies to support the warfighter
Bachelor's degree in aerospace engineering, mechanical engineering, electrical engineering, physics, or a related technical field
2+ years of experience in systems engineering, mission integration, or related roles within the defense or aerospace industry
2+ years of experience in technical project management and/or weapons system development
Experience working with DoD or other national security agencies
Hands-on experience with launch vehicles, weapons systems, or other aerospace defense platforms
Strong ability to analyze and synthesize complex technical information and communicate effectively with both engineers and external stakeholders
Ability to obtain and maintain a Top Secret/SCI security clearance
Ability to travel up to 25% of the time for customer meetings, test campaigns, and program execution
Preferred
Master's degree in a relevant technical field
Experience with hypersonic weapons, missile defense, or advanced guidance systems
Strong background in spacecraft or missile mission design, development, integration, and/or test
Ability to work under pressure and manage multiple parallel priorities effectively
Highly detail-oriented with strong analytical, verbal, and written communication skills
Active Top Secret/SCI security clearance preferred
Benefits
Long-term stock incentives
Comprehensive medial, vision, and dental insurance
Three weeks of paid time off per year
Company
Castelion
Castelion is a defense tech company that applies modern hardware development and manufacturing processes to national security challenges.
51-200 employees
Funding
Current Stage
Growth StageTotal Funding
$469.61MKey Investors
Lightspeed Venture PartnersSilicon Valley BankAndreessen Horowitz
2025-12-05Series B· $350M
2025-01-29Series A· $70M
2025-01-29Debt Financing· $30M
Leadership Team
Bryon Hargis
Founder // CEO
Andrew Kreitz
Co-Founder and CFO
Recent News
2026-01-19
Company data provided by crunchbase