During April 2025, this developer refactored GTIN data retrieval logic in the VodovozOrganization/Vodovoz repository, focusing on Edo document and receipt handlers. By migrating database queries from QueryOver to LINQ using C#, they improved code readability and maintainability in the backend. This technical approach established a more robust and testable data access pattern for GTIN entities, reducing the risk of regressions and supporting future enhancements. The developer also aligned the codebase by merging master and develop branches, ensuring smoother integration. Their work demonstrated depth in backend development and database querying, contributing to a more stable and maintainable codebase overall.