Mission Design Engineer — Defense Modeling & Prototyping

Castelion Corporation; Torrance (CA); Hybrid; USD 90,000 - 120,000; Full time

Job summary

Castelion is seeking a Mission Design Engineer in Torrance, CA to lead mission-level analysis and system design using advanced modeling and simulation tools. You will translate mission needs into engineering requirements and guide design decisions through simulation, testing, and rapid iteration.

Join a fast-moving team advancing defense systems, collaborating across hardware, software, and cross-functional partners to ensure mission-driven insights translate into real-world performance.

Qualifications

• Bachelor's degree in engineering, physics, or related field.
• 2+ years in mission/operational analysis or systems engineering.
• Experience with AFSIM, EADSIM, or similar tools.
• Ability to translate mission needs into requirements and design trades.
• Familiarity with aerospace/defense systems.

Responsibilities

• Lead mission-level simulations to evaluate performance in contested environments.
• Translate needs into system requirements and metrics.
• Conduct trade studies and campaign-level assessments.
• Collaborate with hardware and software teams for prototype integration.
• Support tests, flight tests, and post-test evaluation.

Skills

Mission analysis

Operational analysis

Systems engineering

Aerospace/defense modeling

Communication

Education

Bachelor's degree in aerospace/mechanical/electrical engineering, physics

Tools

AFSIM

EADSIM

STK

MATLAB/Simulink

Job description

Castelion is seeking a Mission Design Engineer in Torrance, CA to lead mission-level analysis and system design using advanced modeling and simulation tools. You will translate mission needs into engineering requirements and guide design decisions through simulation, testing, and rapid iteration.

Join a fast-moving team advancing defense systems, collaborating across hardware, software, and cross-functional partners to ensure mission-driven insights translate into real-world performance.