Atanda Rashid worked on the elixir-lang/expert repository, focusing on backend development and testing using Elixir. During the month, he addressed a bug related to client-driven character offsets by implementing precise clamping logic and ensuring UTF-8 aware document extraction. His approach involved refactoring the extraction logic to robustly handle both ASCII and UTF-8 encodings, which improved the reliability of mixed-content document processing. He also developed automated tests to validate the application of batched incremental changes to document content. This work enhanced the correctness and maintainability of the codebase, demonstrating depth in API development and backend engineering practices.