We are seeking a talented and motivated **Java Developer** to join our core engineering team. In this role, you will design, develop, test, and maintain robust, high-performance, and scalable enterprise applications. You will collaborate closely with cross-functional teams, including product managers, architects, UI/UX designers, and DevOps engineers, to deliver high-quality software solutions that meet business requirements and technical standards. **2. Key Responsibilities** **Software Design & Development** + Design, build, and maintain scalable, reliable, and testable Java/J2EE applications and microservices. + Write clean, maintainable, productive, and well-documented code adhering to object-oriented programming (OOP) principles and SOLID design patterns. + Design and implement RESTful APIs, SOAP services, and event-driven messaging systems. + Optimize application performance, throughput, latency, and memory utilization. **Architecture & System Integration** + Participate in architectural discussions and system design reviews. + Integrate backend services with relational (e.g., PostgreSQL, Oracle, MySQL) and NoSQL (e.g., MongoDB, Cassandra, Redis) databases. + Integrate enterprise systems with message brokers (e.g., Apache Kafka, RabbitMQ, IBM MQ). + Ensure seamless integration with third-party APIs and microservice ecosystems. **Testing & Quality Assurance** + Implement comprehensive automated unit and integration tests using frameworks such as JUnit, Mockito, and Testcontainers. + Participate in peer code reviews to ensure adherence to software engineering standards, security practices, and quality metrics. + Proactively identify bottlenecks, address bugs, and remediate security vulnerabilities. **DevOps & Deployment** + Collaborate with DevOps teams to design and optimize Continuous Integration and Continuous Deployment (CI/CD) pipelines (e.g., Jenkins, GitLab CI, GitHub Actions). + Package and deploy containerized applications using Docker and orchestrate them via Kubernetes/OpenShift. + Monitor application health and system performance using observability tools (e.g., Prometheus, Grafana, ELK Stack, Splunk). **3.



Required Qualifications & Skills** **Technical Skills** + **Core Java & Frameworks:** + Strong proficiency in Java (Java 11 / 17 / 21) and Core Java concepts (Multithreading, Concurrency, Collections, Generics, Stream API). + Hands-on experience with Spring Framework ecosystem (Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Spring Cloud). + **Database Management & ORM:** + Solid understanding of relational database design, SQL indexing, and query optimization (PostgreSQL, Oracle, or MySQL). + Experience with Object-Relational Mapping (ORM) tools (Hibernate, JPA, MyBatis). + Familiarity with NoSQL databases (MongoDB, DynamoDB, Redis) is a plus. + **Microservices & API Design:** + Experience designing, securing, and implementing RESTful APIs (OpenAPI/Swagger) and Microservices architecture. + Familiarity with API Gateways, Service Discovery, and Circuit Breaker patterns. + **Messaging & Event Streaming:** + Experience with message queues and event streaming platforms such as Apache Kafka, RabbitMQ, or ActiveMQ. + **Build Tools & Version Control:** + Experience with build and dependency management tools (Maven, Gradle). + Proficiency with Git and modern branching workflows (Gitflow, trunk-based development). **Professional & Educational Qualifications** + **Education:** Bachelor's or Master's degree in Computer Science, Software Engineering, Information Technology, or equivalent practical experience. + **Experience:** 3+ years of professional software development experience in Java-based environments (Mid-level) or 5+ years (Senior-level). + **Problem Solving:** Strong analytical, problem-solving, and algorithmic thinking capabilities.



+ **Communication:** Excellent verbal and written communication skills with the ability to collaborate effectively across distributed teams. **4. Preferred / Nice-to-Have Skills** + Experience with cloud platforms (AWS, Azure, or Google Cloud Platform). + Hands-on experience with containerization (Docker) and container orchestration (Kubernetes, OpenShift). + Knowledge of secure coding practices (OWASP Top 10) and static analysis tools (SonarQube, Checkmarx). + Familiarity with Agile/Scrum methodologies and tools (Jira, Confluence). + Knowledge of reactive programming (Project Reactor, RxJava, Spring WebFlux) is an advantage. ------------------------------------------------------ **Job Family Group:** Technology ------------------------------------------------------ **Job Family:** Applications Development ------------------------------------------------------ **Time Type:** Full time ------------------------------------------------------ **Most Relevant Skills** Please see the requirements listed above. ------------------------------------------------------ **Other Relevant Skills** For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ _Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law._ _If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review_ _Accessibility at Citi (https://www.citigroup.com/citi/accessibility/application-accessibility.htm)_ _._ _View Citi's_ _EEO Policy Statement (https://www.citigroup.com/global/eeo-aa-policy)_ _and the_ _Know Your Rights (https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf)_ _poster._ Citi is an equal opportunity and affirmative action employer. Minority/Female/Veteran/Individuals with Disabilities/Sexual Orientation/Gender Identity.

📌 Java Developer (Chennai)
🏢 Citigroup
📍 Chennai