Worked on the microsoft/BuildXL repository, focusing on backend development and memory management using C#. Addressed a critical off-by-one bug in the StringTable.CaseInsensitiveEquals method, which previously caused incorrect comparisons for UTF-16 strings spanning multiple memory buffers. The solution involved a careful correction of buffer indexing logic and the addition of comprehensive regression tests to ensure robust case-insensitive equality across multi-chunk strings. This fix stabilized path component deduplication in the BuildXL engine, reducing the risk of cache inconsistencies in large codebases. Demonstrated disciplined unit testing practices and a strong understanding of memory layout and UTF-16 string handling throughout the process.