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.