Developed and delivered the Build Diagnostics SARIF Logging feature for the swiftlang/swift-build repository, enabling SARIF-based diagnostic capture during Swift compilation. This work introduced a new clang build setting, EMIT_SARIF_DIAGNOSTICS_FILE, along with an EMIT_COMPILER_SOURCE_METADATA flag to emit SARIF logs containing diagnostic metadata. The implementation involved configuring the compiler to output SARIF-formatted logs to a fixed path, improving observability and streamlining issue triage for CI/CD workflows. Leveraging expertise in compiler development, Swift, and testing, the contribution centralized diagnostic data, laying the foundation for future SARIF-based tooling and enhancing the overall diagnostic process within the build system.