During April 2025, Sebastian Sprenger focused on deprecation cleanup and maintenance for the confluentinc/ccloud-sdk-go-v2 repository. He removed the deprecated Stream Designer Go SDK, including all related artifacts such as go.mod, go.sum, and the OpenAPI specification, resulting in a leaner and more maintainable codebase. By eliminating unused and outdated components, Sebastian reduced the maintenance surface and improved build times, aligning the repository with the evolving product roadmap. His work centered on code cleanup and SDK management using Go, emphasizing codebase hygiene over new feature development or bug fixes, and demonstrating a methodical approach to technical debt reduction.