Design and implement modular Java backend services and headless REST/GraphQL APIs, build React TypeScript frontends, integrate event-driven messaging, optimize databases, deploy containerized apps on Azure/Kubernetes, implement observability and CI/CD, and enforce DevSecOps and performance tuning across full SDLC.
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.
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