In April 2025, Jay Kanjani focused on enhancing the numerical safety and portability of segment operations in the ROCm/FBGEMM repository. He addressed overflow risks in the segment_sum_csr function by implementing robust type dispatching, enabling support for both int32_t and int64_t offsets on CPU and GPU. Using C++ and CUDA, Jay unified segment operation behavior across architectures through nested dispatching and template metaprogramming, ensuring correctness for large 31-bit offsets. His work fixed a critical bug affecting production workloads, laying the groundwork for consistent cross-platform computation and improving the reliability of segment operations in high-performance computing environments.