Java Developer

Java Developer (Kubernetes)Hybrid RoleBengaluru, 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.