Defense Mission Integration Engineer

Castelion Corporation; Torrance (CA); On-site; USD 110,000 - 170,000; Full time

Job summary

Castelion is seeking a Mission Integration Engineer to serve as the primary technical liaison between Castelion and government customers, overseeing the full lifecycle of complex weapons programs. You will collaborate with propulsion, avionics, GNC, software, flight test, and manufacturing teams to ensure mission success and operational readiness.

The role requires deep technical expertise, strong program execution skills, and the ability to engage with government stakeholders.

Qualifications

• Bachelor's degree in aerospace, mechanical, electrical engineering, physics, or related field.
• 2+ years in systems engineering, mission integration, or related roles within defense/aerospace.
• 2+ years in technical project management or weapons system development.
• Experience working with DoD or other national security agencies.
• Ability to obtain and maintain a Top Secret/SCI security clearance.

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 through test, flight, and deployment.
• Lead mission planning and test efforts for end-to-end system integration and operational readiness.
• Develop prototype development strategies with internal teams to ensure timely delivery of weapons solutions.
• Collaborate with engineers and leads to optimize weapon 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 verification and test planning for robust validation and mission success.
• Support live-fire and flight test operations, including pre-test analysis and post-test evaluation.
• Maintain understanding of government acquisition processes and compliance requirements.

Skills

Systems engineering

Mission integration

Project management

DoD experience

Security clearance

Education

Bachelor's degree in aerospace engineering

Job description

Castelion is seeking a Mission Integration Engineer to serve as the primary technical liaison between Castelion and government customers, overseeing the full lifecycle of complex weapons programs. You will collaborate with propulsion, avionics, GNC, software, flight test, and manufacturing teams to ensure mission success and operational readiness.

The role requires deep technical expertise, strong program execution skills, and the ability to engage with government stakeholders.