Aghav worked on backend and build system improvements across facebookincubator/cinderx and facebook/folly, focusing on stability and maintainability. In cinderx, Aghav prototyped a context decorator wrapper in Python to enhance modularity and future extensibility of decorator utilities, while also improving import reliability for cached class properties to prevent silent failures. For folly, Aghav restored previous CMake build configurations by reverting recent migrations, ensuring cross-platform compatibility and reducing integration issues. The work demonstrated careful rollback strategies and a disciplined approach to dependency management, leveraging C++, CMake, and Python to maintain robust infrastructure and support ongoing development across teams.