My primary language for the last three years. Kubernetes controllers, operators, and backend services - written to be tested, profiled, and maintained.

Designed CRDs and wrote controllers with Kubebuilder/controller-runtime. Comfortable with the operator pattern, admission webhooks, RBAC, and day-2 automation.

Ship everything as containers. Experienced with multi-stage and multi-arch builds, and slimming images for production.

Package and release Kubernetes applications with Helm charts, including chart authoring for operators and their dependencies.

Built the KubeDB operator support for Kafka - provisioning, custom configuration, TLS, scaling, upgrades, plus Connect, Schema Registry, and REST Proxy.

Improved RabbitMQ support in KubeDB and use it for asynchronous messaging between backend services.

Relational modelling, queries, and running Postgres as a managed workload on Kubernetes.

Primary datastore on my current project. Schema design, migrations, and query tuning - from Go, mostly through GORM.

Caching and ephemeral state for latency-sensitive services.

Extended the Kubernetes Gateway API with database protocol-aware routes on top of Envoy, exposing database nodes and UIs through a single gateway.

Built GitOps CRDs and a reconciler that turns Git-driven changes into KubeDB operations - scaling, reconfiguration, and upgrades.

Instrument services and operators, write PromQL, and configure alert rules for database workloads.

Built dashboards for Kafka and other database clusters managed by KubeDB.

Daily driver. Comfortable with bash scripting, systemd, and debugging things from the shell.

Git-based development with GitHub - reviews, release branches, and CI automation through GitHub Actions.

The language I grew up on. Used it through 170+ rated contests on Codeforces and every ICPC regional I competed in.