Mik T. focused on stabilizing complex build and testing pipelines across denoland/chromium_build, web-platform-tests/wpt, and mozilla/gecko-dev. By reverting targeted changes that introduced unsafe libc warnings and QDQ fusion optimizations, Mik restored Windows and macOS CI reliability and preserved correct quantized behavior in TFLite’s ConvTranspose2d path. Their approach emphasized precise rollback and debugging, minimizing risk without broad system disruption. Working primarily with JavaScript and build system management tools, Mik collaborated across repositories to ensure consistent behavior and reduce release blockers. This work demonstrated depth in troubleshooting, cross-platform testing, and maintaining the integrity of web and browser codebases under tight timelines.