Software Engineer – Java Developer

Citibank (Switzerland) AG; Pune District; On-site; Confidential; Full time

Job summary

Citibank (Switzerland) AG seeks a skilled Java Backend Developer to build scalable RESTful services with Java 17+ and Spring Boot. You will design microservices, work with containers, and integrate GenAI features.

The role emphasizes collaboration with product and architecture teams, database optimization, and strong testing practices in a fast-moving AI-enabled environment.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or related field, or equivalent experience.
• 5+ years of professional Java backend development.
• Strong Java (11/17+) knowledge, Spring Boot, REST APIs.
• SQL with ORM (Hibernate/JPA) and relational databases.
• Experience with Git, Maven or Gradle, and CI/CD pipelines.

Responsibilities

• Design, develop, and maintain backend services and RESTful APIs using Java and Spring Boot.
• Architect and deploy microservices in containerized environments (Docker, Kubernetes/OpenShift).
• Design efficient database schemas and optimize queries across PostgreSQL/MySQL/Oracle.
• Contribute to CI/CD pipelines and DevOps practices for automated delivery.
• Write unit, integration, and contract tests to ensure quality.
• Collaborate with product managers, architects, and frontend engineers.
• Integrate LLM APIs and GenAI frameworks to enable AI features.

Skills

Java

Spring Boot

REST APIs

SQL

Git

Maven/Gradle

Distributed systems

Unit testing

Education

Bachelor's degree in CS/Engineering

Tools

Docker

Kubernetes/OpenShift

Hibernate/JPA

PostgreSQL/MySQL/Oracle

Job description

We 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

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. View Citi’s EEO Policy Statement and the Know Your Rights poster.