Senior Java Developer (Full-Stack)

Job Description:

About the Role

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.

Key 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.

Must-Have Skills

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

Nice-to-Have Skills

• 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.

Preferred Qualifications

• Bachelor's/Master’s in computer science.
• Cloud/Java certifications.