Shashank Goel enhanced backend security and reliability across kyverno, grafana/openfga, and keycloak repositories during March 2026. He addressed a concurrency issue in kyverno by refactoring image context caching logic in Go, ensuring read locks were properly released to prevent deadlocks. In grafana/openfga, he implemented dynamic TLS certificate rotation for the gRPC client, improving connection stability and certificate management. For keycloak, he strengthened token introspection by sanitizing error messages and expanding server-side auditing. His work demonstrated a strong grasp of Go, Java, TLS, and concurrent programming, focusing on robust security practices and maintainable, observable backend systems.