The TeamCity Operator for Kubernetes streamlines the deployment and management of TeamCity instances by automating the life cycle processes typically managed manually, such as server deployment, updates, and multi-node coordination. Unlike Helm charts, which are limited in handling stateful applications, the TeamCity Operator introduces a Kubernetes custom resource that facilitates seamless integration and operation of TeamCity within Kubernetes environments. This tool allows for zero-downtime upgrades and offers a code-driven approach to configuration by integrating with Terraform and the Kotlin DSL, enhancing the consistency and reproducibility of CI/CD setups. Initially developed for internal purposes, the TeamCity Operator has been made open-source due to growing demand from users with large Kubernetes installations, and it is now available with examples and documentation in its GitHub repository, with further resources and events planned for the future.