Senior Java Developer

Citibank (Switzerland) AG; Chennai District; Hybrid; Confidential; Full time

Job summary

Citibank (Switzerland) AG in Chennai invites a Senior Java Developer to design, build and maintain scalable backend services using Java 17+ and Spring Boot, in a hybrid model.

You will develop microservices, REST APIs, and data access layers; integrate AI features via LangChain4j or Spring AI, and improve CI/CD and testing practices.

Required: 5+ years in Java backend, strong SQL/ORM (Hibernate/JPA), and collaboration with product teams.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or equivalent.
• 5+ years of professional software development focusing on Java backend systems.
• Strong experience with Java 17+, Spring Boot, Spring Cloud, Spring Data, Spring Security.
• RESTful Web Services design and consumption; SQL & ORM like Hibernate/JPA.
• CI/CD, Git, Maven/Gradle; Docker/Kubernetes in cloud or on-prem environments.

Responsibilities

• Design, develop, and maintain scalable backend services and RESTful APIs.
• Build microservices and deploy in containerized environments (Docker/Kubernetes).
• Collaborate with product managers, architects, and frontend engineers.
• Integrate AI features via LLM APIs and LangChain4j or Spring AI.
• Embrace CI/CD, testing (unit/integration/contract), and code quality practices.

Skills

Java

Spring Boot

Microservices

SQL/ORM

Git/Maven/Gradle

RESTful APIs

CI/CD

Docker/Kubernetes

AI integration

Education

Bachelor’s degree in Computer Science/Engineering

Tools

Docker

Kubernetes/OpenShift

PostgreSQL

Oracle

MongoDB

Hibernate/JPA

Git

Maven/Gradle

Job description

## Senior Java DeveloperApply: Hybrid: Chennai Tamil Nadu India: Full time: Posted Today: End Date: September 30, 2026 (7 days left to apply): 26993218We are seeking a skilled and motivated **Java Developer** to join our engineering team.This is an exciting opportunity for a strong backend engineer who wants to maintain deep expertise in core Java technologies while actively building practical experience in the rapidly evolving field of Artificial Intelligence.## Key Responsibilities:* **Design & Development:** Architect, build, and maintain high-quality, scalable, and secure backend services and RESTful APIs using Java (version 17 or higher) and the Spring Boot framework.* **Microservices Architecture:** Develop and deploy microservices in containerized environments (Docker, Kubernetes/OpenShift).* **Database Management:** Design and optimize database schemas, write efficient queries, and integrate with relational (e.g., PostgreSQL, Oracle) and non-relational (e.g., MongoDB, Cassandra) databases.* **CI/CD & DevOps:** Participate in and improve continuous integration and continuous deployment (CI/CD) pipelines to ensure automated, reliable software delivery.* **Code Quality & Testing:** Write clean, maintainable, and testable code. Implement comprehensive unit, integration, and contract tests (JUnit, Mockito).* **Collaboration:** Work closely with product managers, system architects, and frontend engineers to translate business requirements into technical solutions.* **AI Feature Integration:** Integrate Large Language Model (LLM) APIs (e.g., OpenAI, Anthropic, or internal AI gateways) into existing Java applications to enable smart features like summarization, semantic search, or automated classification.* **Framework Utilization:** Utilize modern Java-based GenAI libraries and frameworks, such as **LangChain4j** or **Spring AI**, to build Retrieval-Augmented Generation (RAG) pipelines and agentic workflows.## Required Technical Skills* **Programming Language:** Strong proficiency in Java (Java 11/17+ preferred), including deep understanding of multi-threading, concurrency, and object-oriented design patterns.* **Frameworks:** Extensive experience with Spring Boot, Spring Cloud, Spring Data, and Spring Security.* **APIs:** Proven experience designing and consuming RESTful Web Services.* **Databases:** Solid experience with SQL (PostgreSQL, MySQL, or Oracle) and ORM frameworks like Hibernate/JPA.* **Build & Version Control:** Proficiency with Git, Maven, or Gradle.## ## Preferred Qualifications* Experience with cloud platforms (AWS, GCP, or Azure).* Familiarity with message brokers/queues (Apache Kafka, RabbitMQ).* Prior experience building a basic Retrieval-Augmented Generation (RAG) application or chatbot (even as a personal project).* Familiarity with Python (for basic AI scripting or data manipulation) is a plus, though the primary focus remains Java.## Soft Skills & Competencies* **Curiosity & Continuous Learning:** A strong desire to stay updated on both Java advancements and the fast-moving GenAI landscape.* **Problem-Solving:** Analytical mindset with the ability to troubleshoot complex backend issues and design creative AI-driven solutions.* **Communication:** Excellent verbal and written communication skills, with the ability to explain technical concepts to both technical and non-technical stakeholders.* **Collaboration:** A team player who thrives in an agile, collaborative environment.## Education & Experience* Bachelor’s degree in Computer Science, Engineering, or a related technical field (or equivalent practical experience).* 5+ years of professional software development experience focusing on Java backend systems.* Demonstrated interest or minor project experience (academic, personal, or professional) involving Generative AI or LLM integration. ------------------------------------------------------## **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.*