Kutluhan Metin enhanced Hazelcast’s upgrade and maintenance workflows by delivering targeted documentation and automation across the hazelcast/hz-docs and hazelcast/hazelcast-platform-operator-docs repositories. He authored a comprehensive Helm upgrade guide and detailed migration instructions from Helm charts to the Operator, both written in adoc and YAML, to minimize downtime and clarify upgrade scenarios. Kutluhan also improved security posture by documenting TLS mutual authentication configurations, distinguishing client and member authentication options. Additionally, he implemented a GitHub Actions workflow to automate backporting changes across multiple maintenance branches, leveraging CI/CD and Git expertise to streamline release management and reduce manual maintenance overhead.