During April 2025, contributed to the SiliconLabsSoftware/matter_extension repository by developing a unified OnOff action callback system for plug control. This work involved refactoring the OnOffPlugManager and AppTask components to consolidate separate initiation and completion callbacks into a single action callback, streamlining event handling for on/off actions. The approach reduced callback fragmentation and minimized potential race conditions, resulting in more reliable and maintainable plug control logic. All changes were validated through standard build and test processes. The project demonstrated strong skills in C++, embedded systems, and IoT, with a focus on modularization, event-driven design, and effective use of Git workflows.