Software Engineer – Java Developer

Citi; Maharashtra; On-site; INR 1,200,000 - 2,100,000; Full time

Job summary

Citi is seeking a skilled Java Developer for its Maharashtra engineering team to design and build scalable backend services and REST APIs using Java 17+ and Spring Boot. You will work on microservices in containers, manage data with SQL/ORMs, and contribute to CI/CD and testing efforts.

The role involves integrating AI features with LLM APIs, collaborating with product and frontend teams, and applying modern GenAI libraries to build RAG workflows. 5+ years of backend experience is preferred.

Qualifications

• Proficient in Java backend development with strong OO design.
• Experience with Spring Boot, Spring Cloud, Spring Data, and Spring Security.
• Designing and consuming RESTful Web Services with solid API skills.
• Solid experience with SQL and ORM frameworks (Hibernate/JPA).
• Familiarity with Git and modern build tools (Maven/Gradle).

Responsibilities

• Design, build, and maintain scalable Java backend services and RESTful APIs.
• Develop and deploy microservices in containerized environments (Docker, Kubernetes/OpenShift).
• Design and optimize database schemas; work with PostgreSQL, Oracle, MySQL, MongoDB or Cassandra.
• Contribute to CI/CD pipelines and automated delivery processes.
• Implement unit, integration, and contract tests (JUnit, Mockito).
• Collaborate with product managers, architects, and frontend engineers.
• Integrate LLM APIs and GenAI features into Java apps using LangChain4j or Spring AI.

Skills

Java backend

Spring Boot

REST APIs

SQL & ORM

Git / Build tools

Education

Bachelor’s degree in CS/Engineering

Tools

Docker

Kubernetes

JUnit

Maven/Gradle

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

Most Relevant Skills

Please see the requirements listed above.

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