Software Engineer - Simulation

The Software Engineer - Simulation position supports physics-based spacecraft simulation capabilities by developing models, validating behavior against real-world responses, and creating mission test scenarios. The role also supports SIT software development processes and interfaces across simulation and mission systems.

Key Responsibilities

• Develop and maintain the physics simulator, improving model fidelity and runtime performance.
• Create new simulation capabilities aligned with evolving vehicle components and validate that modeled behavior matches real behavior.
• Author, develop, and integrate mission test scenarios, including fault and off-nominal cases.
• Build and maintain interface emulator logic.
• Model telemetry with sufficient accuracy to support meaningful regression testing.
• Support and extend development work targeting the hardware interface with the simulation environment.
• Collaborate with Systems Architecture and FSW teams on component development efforts.
• Coordinate with other teams on simulation health.
• Support internal users directly and incorporate feedback into simulation models.
• Follow SIT software development processes to support fast, quality releases.
• Implement software development, testing, and CI/CD practices that align with division and department standards.
• Develop and maintain product documentation, user guides, and model validation records.

Required Qualifications

• Bachelor's degree or greater in Aerospace Engineering, Mechanical Engineering, Physics, Computer Science, or a related field.
• 2+ years of experience in software engineering or a related field.
• Demonstrated development experience in Python and C++.
• Working knowledge of physics-based modeling, numerical methods, or control systems.
• Demonstrated proficiency in a Linux environment and with bash scripting.
• Demonstrated proficiency with Git and modern Agile software development practices and tools.

Technology Stack

• Python, C++
• Linux, bash scripting
• Git, GitLab CI/CD
• CAN, SpaceWire, RS-422
• Docker
• Software-in-the-Loop (SITL), Hardware-in-the-Loop (HITL)
• UDP/TCP

Preferred / Desired Qualifications

• Coursework or experience in orbital mechanics, attitude dynamics, or GN&C.
• Experience emulating hardware interfaces or spacecraft bus protocols such as CAN, SpaceWire, or RS-422.
• Experience writing performance-sensitive simulation or real-time software.
• Experience validating models against test or flight data.
• Experience designing and working with APIs.
• Familiarity with spacecraft flight software and avionics architectures.
• Experience with Docker and containerization.
• Experience with CI/CD pipelines, especially GitLab CI/CD.
• Experience with Software-in-the-Loop (SITL) and/or Hardware-in-the-Loop (HITL) test systems.
• Experience in end-to-end, system-level automated testing.
• Experience with agentic or AI-assisted software development workflows.
• Ability to interface with and handle flight hardware.
• Familiarity with the space domain and satellite operations.
• Networking concepts like UDP/TCP.
• Active Top Secret security clearance or ability to obtain.

Compensation and Location

Location: Greenwood Village, CO (onsite). Salary: USD 110,000 - 190,000 per yearly.

Benefits

• Medical, dental, and vision insurance
• PTO
• 401K