Worked on two open source projects, focusing on targeted improvements to code reliability and feature depth. In the nvim-treesitter/nvim-treesitter repository, addressed CSS code folding by refining the parser’s logic to correctly handle top-level multi-line blocks, enhancing code navigation and editor stability using CSS and Tree-sitter. Later, contributed to shaka-project/shaka-player by implementing an API feature in JavaScript that exposes parsed media segment timestamps, enabling accurate mapping between external media and presentation timelines. This addition improved analytics and playback synchronization, with careful propagation of timestamp data through the media pipeline, demonstrating a methodical approach to maintainability and instrumentation.