Worked on the amzn/selling-partner-api-models and amzn/selling-partner-api-samples repositories, focusing on stability and maintainability. Addressed production risk by reverting the Java Authentication and Authorization Client to its previous state, restoring OkHttp integration and ensuring compatibility for downstream services. Later, streamlined the amzn/selling-partner-api-samples repository by decommissioning the Data Kiosk MCP Server and removing related artifacts, which reduced maintenance overhead and improved onboarding clarity. Utilized Java, TypeScript, and Node.js to manage API client development, integration, and repository cleanup. The work emphasized risk mitigation, codebase clarity, and efficient maintenance practices across both Java and TypeScript-based Amazon Selling Partner API projects.