Flight Software Engineer

York Space Systems•Austin, TX

3d•$110,000 - $190,000

About The Position

York Space Systems was founded to radically improve spacecraft affordability and reliability, transforming, and enabling next- generation space mission operations worldwide. Today, York is one of the most innovative aerospace companies, specializing in end-to-end customer solutions and the rapid production of spacecraft platforms. York’s complete Space Segment Solution includes spacecraft production, payload integration, system integration & test, launch services, ground segment services, and mission operations, enabling customers to leverage York’s existing technology solutions to get to orbit rapidly and responsively. We’re looking to expand our team across the board. We are looking for a talented and enthusiastic Software Engineer to join the Simulation, Integration and Test Department with a passion for launching hardware into space and a desire to revolutionize the space industry. Our ideal candidate thrives in a highly collaborative environment and enjoys finding ways to innovate and make processes more efficient. This team builds new simulation capabilities, proves they are correct, and authors the mission scenarios that exercise them. In this role you will write the models that stand in for a real spacecraft, including the dynamics, the avionics interfaces, and the telemetry, and you will be responsible for their accuracy. When a regression test passes against your simulator, the flight software team needs to be able to trust that result. You will work closely with the Systems Architecture and FSW teams as new vehicle components come online, building the simulation capability to match and validating that it behaves the way the real hardware does.

Requirements

Bachelor's degree or greater in Aerospace Engineering, Mechanical Engineering, Physics, Computer Science, or 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

Nice To Haves

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

Responsibilities

Develop and maintain the physics simulator, improving both model fidelity and runtime performance
Develop new simulation capabilities in step with new vehicle components, and validate that they model real behavior correctly
Author, develop, and integrate mission test scenarios, including fault and off-nominal cases
Build and maintain interface emulator logic
Model telemetry accurately enough to support meaningful regression testing
Support and extend development targeting the hardware interface with the simulation environment
Collaborate with the Systems Architecture and FSW teams on new component development
Collaborate with other teams on simulation health
Support internal users directly and incorporate their feedback into the simulation models
Follow SIT software development processes to ensure fast and quality releases
Implement software development, testing, and CI/CD practices that meet division and department standards for software
Develop and maintain product documentation, user guides, and model validation records