Sriharikrishna developed a unified periodic checkpointing feature for the EnzymeAD/Enzyme-JAX repository, merging constant and periodic checkpointing into a single, maintainable implementation. Using C++ and MLIR, Sriharikrishna addressed a critical backward-pass bug involving scalar loop-carried values by introducing a 1-D cache and leveraging dynamic_update_slice operations. The work included expanding and updating test coverage to validate checkpointing across various loop lengths and periods, including non-divisible cases, and aligning tests with canonicalized IR using named SSA captures. This engineering effort improved the reliability of reverse-mode differentiation and strengthened the test infrastructure, demonstrating depth in algorithm and compiler design.