Justin developed two features across the dotnet/docs-aspire and dotnet/aspnetcore repositories, focusing on backend and cloud integration using C# and Azure. He updated Azure provisioning documentation to align with Aspire V8 resource name resolution, replacing deprecated PropertyResolvers with InfrastructureResolvers and renaming classes to match current practices. In dotnet/aspnetcore, he implemented HTTP 206 Partial Content support for static assets, enabling compliant byte-range responses and validating the feature with integration tests. His work demonstrated careful attention to protocol standards, documentation clarity, and cross-repository consistency, reflecting a methodical approach to API development, cloud computing, and backend engineering within a short timeframe.