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 up-to-date 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/GitHu

📌 Senior Java Developer (Chennai)
🏢 Toppan Merrill
📍 Chennai