Java Developer

Java Developer (Kubernetes)Hybrid Role Bengaluru, KAKey ResponsibilitiesDesign, develop, and maintain Java-based backend servicesUse modern Java (JDK 8+) features — streams, lambdas, Optionals, CompletableFuture — to write clean and efficient code.Build and maintain RESTful APIs following OpenAPI/Swagger specifications for schema consistency, client generation, and documentation.Implement orchestration logic using Kubernetes client APIs (e.g., Fabric8) to manage workloads and configurations across multiple clusters.Work extensively with Kubernetes concepts — including Deployment, Pod, Container, ConfigMap, Secret, Service, Role, RBAC, Event, PodDisruptionBudget (DistributedBudget), networking, and CRD — for service lifecycle, access control, and observability.Develop reactive, non-blocking microservices using Vert.x, applying asynchronous and event-driven patterns.Integrate with MySQL / Galera or similar relational databases for configuration, metadata, and service state management.Implement persistence layers using JDBC, JPA/Hibernate, or reactive database clients, ensuring performance and data consistency.Manage multi-module builds using Maven, configuring, and maintaining common plugins.Develop automation frameworks for multi-cluster rollouts, image tagging/versioning, and CI/CD pipelinesCollaborate closely with SRE, platform, and DevOps teams to improve reliability, observability, and scalabilityRequired Skills5+ years of experience building backend systems or microservices in Java.Strong Java background (JDK 8 or newer) with expertise in:Lambda expressions, streams, and functional programmingConcurrency, reactive patterns, and JVM performance tuningCore data structures and collection frameworks — including Lists, Maps, Sets, Arrays, and Tables — and their underlying algorithms, time complexity, and usage best practicesPractical experience with Kubernetes APIs, preferably using the Fabric8 client.Solid understanding of Kubernetes primitives: Deployment, Pod, Container, ConfigMap, Secret, Service, Role, RBAC, Event, PodDisruptionBudget (DistributedBudget), networking concepts (Service types, Ingress, DNS, CNI, NetworkPolicy), and CRD.Hands-on experience using Kubernetes CLI (kubectl), writing, and debugging YAML manifests, and using tools like jq/yq for inspecting resource data.Hands-on experience designing and documenting APIs with OpenAPI / Swagger.Proficiency with MySQL / Galera or similar relational databases and Java DB APIs (JDBC, JPA, ORM).Experience with Maven build management and common plugins.Proficiency with Docker and CI/CD tools (Jenkins, GitHub Actions, etc.).Good knowledge of Linux-based operating systems (amd64 platform) — including file systems, process management, networking, and container runtime behavior.Nice to haveExperience with Vert.x or other reactive frameworks (RxJava, Reactor).Experience developing or maintaining Go (Golang) services — especially for webhooks or platform automation.Understanding of database orchestration and HA clusters (Galera replication, failover strategies).Experience developing or managing Kubernetes CRDs and operators.Knowledge of rollout automation, tag rotation policies, and multi-environment deployment strategies.Experience working with multi-zone Kubernetes clusters is a big plus.Familiarity with one or more data and stream processing frameworks such as Apache Flink, Kafka, Hadoop, Elasticsearch, ZooKeeper, or Airflow is a plus.Basic frontend knowledge (e.g., legacy jQuery or modern frameworks such as React) is a plus.Exposure to monitoring and metrics stacks (Prometheus, Grafana, Sherlock).Strong debugging, analytical, and communication skills.