Senior Simulation Engineer

Responsibilities

• Own closed-loop spacecraft simulation platforms from initial design to deployment
• Develop and maintain core simulation capabilities such as scheduling, data routing, diagnostics, configuration, and Monte Carlo capabilities
• Develop and maintain simulation models, emulators, and hardware/software interfaces with units under test
• Collaborate with cross-functional teams to define test requirements, test procedures, and execute tests
• Analyze test data, identify trends, and generate meaningful insights for test results and model improvements
• Develop tools to automate simulation workflows, enable data analysis, and produce test reports
• Debug complex closed-loop interactions between units under test and simulation
• Help shape long-term technical architecture and roadmap for our simulation platforms

Requirements

• U.S. Person status required
• Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Aerospace Engineering, or related field
• 8+ years of experience developing closed-loop simulation tools (6DOF, SITL, PITL, HITL)
• Proficiency in C/C++, Rust, or Python
• Experience with Linux environments
• Familiarity with Docker, CI/CD pipelines, and agile development
• Experience designing and validating physics-based simulation models
• Experience emulating virtual sensors, actuators, and test equipment with serial/network/IO interfaces
• Strong analytical and problem-solving skills

Preferred Qualifications

• Experience in aerospace or satellite industry
• Knowledge of satellite subsystems (sensors, actuators, controls, communications, power)
• Experience with real-time or HPC systems
• Knowledge of embedded Linux or real-time operating systems

About the Company

Apex manufactures satellite buses at scale using a combination of software, vertical integration, and hardware designed for manufacturing to provide humankind access to the galaxy.