During December 2025, Sam Deminick contributed to the umbraco/Umbraco-CMS repository by developing a targeted performance optimization for the content indexing workflow. Focusing on backend development with C# and Umbraco CMS, Sam improved the UmbracoContentIndex deletion logic to skip unnecessary deletion calls when no items are present, thereby reducing redundant database operations and resource allocations during re-indexing. This change streamlined index maintenance for large content graphs, resulting in lower CPU and database load. Sam collaborated with Copilot and Andy Butland, incorporated code review feedback, and adhered to project conventions, demonstrating a thoughtful and maintainable approach to solving a specific performance bottleneck.