Ben Barclay developed run-level metrics annotation for the PsycheFoundation/psyche repository, enabling per-run observability and business analytics across the stack. He introduced a run_id field to the ServiceInfo struct and ensured its propagation through client, server, example, and logging modules, allowing unique identification of each run. By updating the OpenTelemetry collector configuration, Ben enabled metrics to be tagged with run_id, supporting end-to-end traceability and facilitating faster troubleshooting. His work demonstrated depth in Rust, system design, and observability, resulting in cross-layer instrumentation that supports business-level analytics and data-driven decisions. The feature was delivered with a clear, maintainable technical approach.