Worked on reliability engineering for the aspect-build/rules_js repository, focusing on backend development and DevOps improvements using JavaScript and Node.js. Addressed two critical bugs over two months, first by refactoring the devserver’s input handling to use Node.js’s readline module for line-based stdin processing, which improved the reliability of interactive command line input. Later, implemented a retry-with-backoff mechanism for all devserver file I/O operations, introducing a withRetry utility to handle intermittent ENOENT errors during Bazel sync. These targeted changes enhanced the stability of developer workflows by reducing input failures and mitigating file operation races during development server synchronization.