Mission Design Engineer

Castelion Corporation

$90K — $130K *
Aerospace & Defense
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in aerospace/mechanical/electrical engineering, physics, or related field.
  • 2+ years in mission analysis, operational analysis, or aerospace/defense simulation.
  • Proficient with AFSIM, EADSIM, or comparable modeling tools.
  • Experienced in translating mission needs into engineering requirements.
  • Familiar with aerospace or defense systems like missiles and aircraft.
  • Strong analytical and communication abilities.
  • Ability to obtain a Top Secret/SCI clearance.

Responsibilities

  • Develop mission-level simulations to assess system performance in complex environments.
  • Translate operational requirements into system design metrics.
  • Conduct trade studies and analyses to inform system architecture.
  • Evaluate interactions among sensors, weapons, and communications for mission effectiveness.
  • Maintain simulation frameworks that mimic real-world conditions.
  • Use simulation data for optimizing design across technical domains.
  • Participate in integration of mission requirements into prototypes and conduct flight tests.

Benefits

  • Four weeks of paid time off and ten company-paid holidays.
  • Comprehensive health benefits with 100% medical coverage for employees.
  • Paid parental leave for family support.
  • Fitness stipend to promote health and wellness.
  • Onsite amenities including catered meals and a stocked kitchen.
  • Onsite EV charging for employee convenience.
  • Employees receive meaningful long-term equity in the company.
Full Job Description
Mission Design Engineer

Mission Design Engineer
As a Mission Design Engineer, you will lead mission-level analysis and system design using advanced modeling and simulation tools such as AFSIM and EADSIM. You will evaluate system effectiveness in operational scenarios, translate mission needs into engineering requirements, and inform design decisions through simulation, test, and rapid iteration.

In addition to modeling and analysis, you will play an active role in prototype hardware design, integration, and test, working closely with cross-functional teams to ensure mission-driven insights are realized in real-world systems. This role connects operational analysis directly to hardware, ensuring that simulation results drive tangible performance improvements in deployed systems.

Responsibilities:

Mission Design & Operational Analysis
  • Develop and execute mission-level simulations using AFSIM and EADSIM to evaluate system performance in contested, multi-domain environments.
  • Translate operational scenarios and customer needs into system requirements, constraints, and performance metrics.
  • Conduct trade studies, sensitivity analyses, and campaign-level assessments to inform system architecture and design decisions.
  • Analyze interactions between sensors, weapons, communications, and threat systems to assess mission effectiveness.

Modeling, Simulation & Data-Driven Design
  • Build, maintain, and extend simulation frameworks representing real-world operational conditions.
  • Use simulation outputs to guide design trades across propulsion, GNC, avionics, and software.
  • Correlate simulation results with ground and flight test data to improve model accuracy and predictive capability.
  • Develop tools and workflows to rapidly evaluate new concepts and configurations.

Prototype Development, Integration & Test
  • Collaborate with hardware and software teams to integrate mission requirements into prototype systems.
  • Support system-level integration and ensure alignment between modeled performance and actual system behavior.
  • Participate in flight tests and live-fire events, including pre-test analysis, real-time support, and post-test evaluation.
  • Use test results to refine both system design and simulation models.

Cross-Functional Collaboration
  • Work across engineering disciplines (GNC, propulsion, avionics, software, manufacturing).
  • Communicate mission-level insights to inform design tradeoffs and prioritization.
  • Support design reviews, technical briefings, and customer engagements.

Basic Qualifications:
  • Bachelor's degree in aerospace engineering, mechanical engineering, electrical engineering, physics, or related field.
  • 2+ years of experience in mission analysis, operational analysis, systems engineering, or aerospace/defense modeling & simulation.
  • Experience with AFSIM, EADSIM, or similar tools (e.g., STK, MATLAB/Simulink, custom simulation frameworks).
  • Experience translating mission needs into engineering requirements and design trades.
  • Familiarity with aerospace or defense systems (missiles, aircraft, spacecraft, or launch vehicles).
  • Strong analytical and communication skills.
  • Ability to obtain and maintain a Top Secret/SCI clearance.

Additional Requirements:
  • Ability to put in extended hours, including evenings and weekends, when required to meet aggressive timelines
  • This role is based in Torrance, CA and requires full-time onsite presence

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.

Benefits And Perks

All full-time employees are granted meaningful long-term equity, sharing in the company's significant growth trajectory. We offer four (4) weeks of paid time off, ten (10) company-paid holidays, and comprehensive health benefits - including 100% employee-covered medical and strong dependent coverage, along with dental and vision plans. We also provide paid parental leave to support growing families, a $100 monthly fitness stipend to promote health and performance, and onsite EV charging for convenience. In addition, employees enjoy perks like catered meals, company-covered food during high-demand periods, and a fully stocked kitchen to stay fueled throughout the day.

While this position does not currently require a U.S government-issued security clearance, it may in the near future. Therefore, the ability to obtain and maintain a U.S. government- issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

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