Andrew Matwiedle developed and integrated gameplay features and backend systems across multiple repositories, including pheenty/goob-station, Simple-Station/Einstein-Engines, and funky-station/funky-station. He implemented C# and YAML-based solutions to enforce gameplay rules, such as restricting borg entities from consuming liquids to restore intended balance, and introduced new craftable and researchable components like the HolopadMachineCircuitboard to expand player progression paths. In funky-station, he delivered an end-to-end surgical tool sanitation workflow for Autodoc, combining backend logic with UI enhancements to improve operational safety and efficiency. His work demonstrated depth in backend development, configuration management, and game-focused UI engineering.