A Flight Software Developer designs, develops, tests, and maintains software used in aircraft and spacecraft systems. They write codes for avionics, flight control, navigation, communication, and other systems, ensuring functionality, reliability, and safety. They collaborate with aerospace engineers and other specialists to understand system requirements and troubleshoot issues. They also simulate flight conditions to test software, identify bugs, and make necessary adjustments. Their work is critical in ensuring the successful operation of aircraft and spacecraft, complying with safety regulations, and achieving mission objectives. Furthermore, they document their work for reference and future improvements.