Java Backend Developer

Kumaran; Chennai District; On-site; INR 1,200,000 - 2,200,000; Full time

Job summary

Kumaran Systems is seeking a Java backend developer to design, develop, and maintain backend services using Java 8+ and Spring Boot. You will build microservices, implement REST APIs, and integrate with SQL/NoSQL databases while ensuring security with Spring Security and OAuth2/JWT.

You will work with CI/CD pipelines, Docker, and Kubernetes, collaborating with architects, frontend, DevOps, and QA to deliver robust, scalable solutions. 5–7 years of experience preferred.

Qualifications

• 5–7 years of experience in Java backend development.
• Strong hands-on experience with Java 8+, Spring Boot, and microservices.
• Experience building and consuming REST APIs and working with relational and NoSQL databases.
• Solid understanding of Spring Security, OAuth2/JWT, and messaging (Kafka/RabbitMQ).
• Familiarity with CI/CD tools (Jenkins, GitLab CI, Azure DevOps) and containerization (Docker, Kubernetes).
• Proficient in Git and modern testing practices (unit/integration).

Responsibilities

• Design, develop, and maintain backend services using Java and Spring Boot.
• Build and enhance microservices-based architectures for scalable enterprise apps.
• Collaborate with architects, frontend, DevOps, and QA to deliver robust solutions.
• Develop RESTful APIs, integrate with databases, and ensure security.
• Maintain logging, monitoring, and alerting for microservices.

Skills

Java backend development

Java 8+

Spring Boot

Microservices

REST APIs

Relational DBs

NoSQL DBs

Spring Security

OAuth2/JWT

Kafka

RabbitMQ

CI/CD

Git

Docker

Kubernetes

Tools

Jenkins

GitLab CI

Azure DevOps

Job description

Kumaran Systems: Engineering Future-Ready Transformations Since 1992, Kumaran Systems has been helping enterprises bridge the past and the future, reimagining legacy systems and embracing AI-led possibilities. With over 34 years of delivery excellence, we specialise in re-engineering core applications, driving cloud transformation, and building automation-first, GenAI-enabled ecosystems across the Banking and Financial Services, Insurance, Telecom, and Automotive sectors. We help organisations not just upgrade their systems but reimagine what’s possible.

Why Kumaran?

We blend engineering discipline with AI innovation, helping clients modernise with confidence, automate with clarity, and scale with purpose. Our global delivery model ensures agility, responsiveness, and seamless collaboration, with clients always at the heart of every engagement. At Kumaran, we don’t just solve problems, we engineer future-ready transformations.

Job Description

• Design, develop, and maintain backend services using Java and Spring Boot .
• Build and enhance microservices-based architectures for scalable enterprise applications.
• Work closely with architects, frontend engineers, DevOps, and QA to deliver robust, secure, and high-performing solutions.

2. Key Responsibilities

• Develop and maintain RESTful APIs and backend services using Spring Boot.
• Design and implement microservices with proper separation of concerns and domain-driven design.
• Integrate services with databases (SQL/NoSQL) and external systems.
• Implement security , authentication, and authorization (Spring Security, OAuth2/JWT).
• Optimize application performance, scalability, and reliability.
• Participate in requirement analysis , solution design, and estimation.
• Write clean, maintainable, and well-tested code following best practices.
• Create and maintain technical documentation for services and APIs.
• Troubleshoot and resolve production issues; provide L3 support as needed.
• Work with CI/CD pipelines and containerization (e.g., Docker, Kubernetes) for deployments.
• Ensure proper logging, monitoring, and alerting for microservices.

3. Required Skills & Experience

• 5-7 years of experience in Java backend development .
• Strong hands-on experience with:
  • Java 8+
  • Spring Boot , Spring MVC, Spring Data JPA
  • Microservices architecture
• Experience in:
  • Building and consuming REST APIs
  • Relational databases (e.g., MySQL, PostgreSQL, Oracle)
  • At least one NoSQL database (MongoDB, Redis, etc.) - preferred
• Good understanding of:
  • Spring Security , OAuth2/JWT
  • Message queues / event-driven architecture (Kafka, RabbitMQ, etc.)
  • Unit and integration testing (JUnit, Mockito, etc.)
• Familiarity with:
  • CI/CD tools (Jenkins, GitLab CI, Azure DevOps, etc.)
  • Version control (Git)
  • Docker , Kubernetes (preferred)

Kumaran Systems is an Equal Opportunity Employer and does not discriminate on the basis of race or ethnicity, religion, sex, national origin, age, veteran disability or genetic information or any other reason prohibited by law in employment.