Worked on the cmss13-devs/cmss13 repository, delivering targeted improvements to gameplay and backend stability using DM and object-oriented programming. Developed an alt-click interaction feature for sinks and hydroponics trays, streamlining reagent handling and reducing repetitive player actions by enabling quick fill and dump operations. Focused on clean, traceable commits and scoped changes to maximize impact on user experience. Additionally, addressed a critical bug affecting hijack state persistence for groundside xenomorphs, introducing a new state flag and updating spawning logic to ensure consistent hive assignment after hijack events. Demonstrated skills in backend and game development through focused, high-value contributions.