Worked on the harness-go-sdk repository to optimize the UserGroupV2 API payload, focusing on reducing data transfer and improving client efficiency. The approach involved refactoring the Users field in the API response from a detailed []UserInfo type to a streamlined []UserBasicInfo type, resulting in smaller payloads and faster client interactions. This targeted change was implemented in Go, demonstrating skills in backend development and API design. The work was delivered as a single, well-documented feature, ensuring maintainability and facilitating efficient code review cycles. No bugs were addressed during this period, with efforts concentrated on precise, review-ready improvements to API efficiency.