Java Developer (Spring Security, JWT, SSO, DDD, OpenShift, Redis, WebSockets, Kafka)

Responsibilities • Lead the design, development, and delivery of scalable enterprise applications using Java and Spring Boot. • Design and implement microservices-based architectures and modernize legacy monolithic applications into scalable distributed services. • Develop and integrate high-performance RESTful APIs for enterprise and banking applications. • Design event-driven solutions using Apache Kafka for asynchronous communication and distributed application workflows. • Implement application security using Spring Security, OAuth, JWT, SSO, and role-based access control (RBAC). • Lead technical design activities including high-level and low-level architecture, component design, API integration, deployment, and data-flow design. • Collaborate with frontend teams to integrate backend services with ReactJS and Angular applications. • Work with relational and NoSQL databases and contribute to schema design and query optimization. • Drive application performance, scalability, reliability, maintainability, and troubleshooting of complex production issues. • Lead and mentor development teams, conduct code reviews, and establish development best practices. • Collaborate with cross-functional teams to deliver integrated enterprise solutions and resolve complex technical issues. • Support containerized and enterprise application environments using Docker and OpenShift. Requirements • Minimum 8+ years of technical experience, with strong hands-on experience in architecture development, backend system integration, and application development. • Experience with Java, Spring Boot, Microservices, RESTful APIs, and Apache Kafka, with proven experience designing scalable enterprise architectures and leading technical teams. • Strong hands-on experience in Java and enterprise application development. • Strong experience in Spring Boot and Microservices architecture. • Mandatory hands-on experience with Apache Kafka and event-driven architecture. • Strong experience developing and integrating RESTful APIs. • Mandatory experience with Spring Security, OAuth2, and JWT. • Experience in SSO/RBAC is required. • Hands-on experience with ReactJS and/or Angular; candidates with exposure to both are preferred. • Strong experience with JavaScript and TypeScript. • Experience with Spring Cloud and distributed application architecture. • Strong database experience with MySQL, PostgreSQL, Oracle, or MongoDB, including schema design and query optimization. • Experience with Docker and OpenShift in enterprise application environments. • Experience in GraphQL, Swagger/OpenAPI, WebSockets, or messaging technologies is preferred. • Experience in Domain-Driven Design (DDD) and event-driven design is preferred. • Experience with caching technologies such as Redis, Ehcache, or Memcached is an advantage. • Proven experience leading technical teams, mentoring developers, conducting code reviews, and driving technical delivery. • Experience with system architecture, performance optimization, debugging, and software development best practices.