Senior Java Developer (Full-Stack)

We're seeking a Senior Java Developer with 5+ years' experience to build high-performing, scalable enterprise portal backends, APIs, and modern React frontends. You'll develop modular services, cloud-native integrations, and headless APIs for robust, production-ready portal applications.

Responsibilities

Develop modular Java backend services (OSGi modules, Service Builder equivalents) and RESTful/GraphQL headless APIs for enterprise portals; Build responsive React frontends with client extensions consuming portal APIs and state management (Redux/Zustand); Design and optimize Postgres/MySQL databases with advanced entity-service mappings and SQL performance tuning; Implement event-driven integrations using message brokers (RabbitMQ, Kafka, Azure Service Bus) for cross-module communication; Deploy containerized portal applications with Docker/Kubernetes on Azure, ensuring high availability; Optimize performance with distributed caching (Redis, Hazelcast), low-latency APIs, and frontend bundle optimization; Collaborate across full SDLC: API contracts, modular development, frontend integration, deployment, and monitoring; Implement full-stack observability with Prometheus, Grafana, Datadog across backend services and frontend; Implement DevSecOps with automated security scanning, CI/CD pipelines for modular deployments.

Requirements

5+ years' experience; Java 17+, Spring Boot; enterprise portal frameworks (OSGi modules, Service Builder, modular service layers); REST/GraphQL headless APIs; React 18+, TypeScript, hooks, component libraries (Material-UI); portal client extensions/API integration; Microservices/modular monoliths, design patterns (CQRS, Event Sourcing, repository patterns); proficiency with agentic AI coding assistants for rapid prototyping, refactoring complex OSGi modules, and generating tests across full-stack components; Docker, Kubernetes (Helm charts), Jenkins/GitHub Actions, multi-module pipelines; Azure (2+ years hands-on); Postgres/MySQL, JPA/Hibernate, advanced SQL, entity-service mappings; JUnit/Mockito (backend), Jest/React Testing Library (frontend), integration testing; Git, Gradle/Maven (multi-module), npm/yarn; Full SDLC experience; OWASP security for enterprise applications.

Nice to have

Kafka streaming; Next.js for portal frontends; Infrastructure as Code (Terraform for portal deployments); Advanced monitoring: Datadog, Splunk; Domain-Driven Design; legacy system integration (.NET/mainframes); Portal-specific patterns: content management, user personalization, workflow engines; Bachelor's/Master's in computer science; Cloud/Java certifications.