Worked on the OverMoney repository to enhance deployment reliability and operational efficiency through targeted DevOps and backend improvements. Focused on upgrading CI/CD pipelines by aligning Docker Buildx versions in GitHub Actions, enabling seamless Yandex Cloud deployments and reducing deployment risk. Improved backend reliability by fixing mail status retrieval in the MailController, increasing operational visibility. Migrated the Kafka cluster to KRaft mode, removing ZooKeeper dependencies and tuning resource allocations for better scalability. Introduced graceful pod shutdowns in Kubernetes to ensure smooth deployments and scaling. Utilized Java, YAML, and Docker, applying configuration management and automation best practices throughout the development process.