Worked on the flutter/flutter repository to enhance proxy middleware by ensuring original request query parameters are preserved in the final target URL. Introduced the getFinalTargetUri method, which robustly rewrites request paths and manages query parameter handling for improved API integration fidelity. Developed comprehensive unit tests covering scenarios with and without query parameters, validating the feature’s reliability and correctness. All changes were integrated with continuous integration pipelines and accompanied by documentation updates. Utilized Dart for backend and API development, with a focus on testing to maintain code quality. The work improved downstream compatibility and reliability in request routing for API services.