Fisher Evans worked on the DataDog/datadog-agent repository, focusing on improving Kubernetes manifest tagging. He delivered a targeted bug fix that addressed incorrect application of extraTags in buffered manifests by refactoring the tag collection and propagation logic across orchestrator resources. Using Go and YAML, Fisher ensured that collector-specific and metadata tags were accurately included in the final manifest payloads, which enhanced observability and enabled more precise resource and cost attribution for Kubernetes deployments. His approach involved validating changes through targeted tests and code review, demonstrating a thoughtful and in-depth understanding of orchestration, tagging strategies, and DataDog Agent internals.