During April 2025, contributed to the charmplusplus/charm repository by addressing a critical bug in the ResumeFromReallocCheckpoint workflow. Focused on low-level programming and memory management, the work involved replacing vector iterator-based access with direct raw pointer manipulation for the se_avail_vector structure. This technical approach leveraged C++ pointer arithmetic to eliminate iterator overhead, resulting in improved correctness and throughput during checkpoint restoration. The solution enhanced performance by optimizing how raw pointers are handled in memory-intensive operations. All changes were documented in a traceable commit, demonstrating a methodical approach to performance-oriented refactoring and a strong command of C++ and memory management techniques.