Worked on the zeek/zeek repository to deliver a file analysis performance optimization focused on processing large files more efficiently. The approach involved replacing object-based byte counting with C++ uint64_t integers, which streamlined the counting logic and removed the IncrementByteCount path from the codebase. This change updated key tracking metrics such as seen_bytes, missing_bytes, and overflow_bytes, resulting in a measurable speedup of approximately nine percent for large file analysis. Leveraging skills in low-level programming, file analysis, and performance optimization, the work improved throughput and scalability, enabling the system to handle larger datasets with reduced maintenance overhead.