Java Spring Boot Developer 2-4 yrs | Mumbai only

Isoftwarefactory; Mumbai Suburban; On-site; INR 700,000 - 1,100,000; Full time

Job summary

Isoftwarefactory in India is seeking a skilled Java Spring Boot Developer with 2-4 years of experience to build secure, scalable backend applications. The role covers REST microservices, API documentation with Swagger/OpenAPI, and integration with Kafka/JMS and payment gateways.

You will work with Hibernate/JPA, SQL/NoSQL, and in-memory caching to ensure performance, security, and reliability under load. Collaborative Agile practices and code reviews are expected.

Qualifications

• 2-4 years of Java Spring Boot backend development.
• Experience with Kafka, JMS, Hibernate/JPA, and SQL/NoSQL databases.
• Strong focus on performance tuning, security, and best practices.
• Experience building RESTful microservices and integrating third-party APIs.

Responsibilities

• Design, develop, and maintain RESTful microservices with Java Spring Boot.
• Document APIs using Swagger/OpenAPI for stakeholders.
• Integrate with message brokers like Kafka and JMS (ActiveMQ, RabbitMQ).
• Handle JSON/XML data serialization and validation.
• Build secure and maintainable data persistence layers using Hibernate/JPA and SQL/NoSQL databases.
• Implement in-memory caching (Ehcache) for performance.
• Ensure performance, scalability, and availability under load.
• Follow secure coding standards to prevent OWASP vulnerabilities.
• Collaborate via code reviews and architectural discussions.
• Integrate with third-party APIs including payment gateways.
• Write clean, testable code and participate in Agile sprints.

Skills

Java 17+

Spring Boot

Kafka

JMS

JSON

XML

Hibernate

JPA

SQL/NoSQL

Redis

Ehcache

Git

CI/CD

Swagger/OpenAPI

Tools

Docker

Kubernetes

AWS

Azure

Job description

Job Description:

We are seeking a highly skilled Java Spring Boot Developer with 2-4 years of experience in building secure, scalable, and high-performance backend applications. The ideal candidate will have hands-on experience with Kafka, JMS, Hibernate/JPA, caching strategies, SQL/NoSQL, JSON/XML APIs, and third-party integrations including payment gateways. A strong focus on performance tuning, security, and best practices is essential.

Key Responsibilities:

• Design, develop, and maintain RESTful microservices using Java Spring Boot
• Document APIs using Swagger/OpenAPI for internal and external stakeholders
• Integrate message brokers like Kafka and JMS (e.g., ActiveMQ, RabbitMQ)
• Handle data serialization using JSON and XML, including transformation and validation
• Build secure and maintainable data persistence layers using Hibernate, JPA, and SQL/NoSQL databases
• Implement in-memory caching (Ehcache) for optimized performance
• Ensure application performance, scalability, and availability under load
• Follow secure coding standards to prevent OWASP vulnerabilities (XSS, SQLi, etc.)
• Collaborate with peers through code reviews, design discussions, and architectural decisions
• Integrate with third-party APIs, including payment gateways (CashFree, PayU, etc.)
• Write clean, well-documented, and testable code using best practices
• Participate in Agile sprints, story grooming, estimations, and retrospectives
  

Required Skills:

• 2-4 years of experience with Java 17+ and Spring Boot (Microservices)
• Experience in Apache Kafka, JMS
• Expertise in working with JSON, XML, and related parsing libraries
• Solid knowledge of Hibernate, JPA, SQL (PostgreSQL/MySQL), and NoSQL (MongoDB/Redis)
• Hands-on experience with caching frameworks Ehcache, Redis, or Caffeine
• Familiarity with third-party API integration, including payment gateway SDKs/APIs
• Experience in performance tuning, profiling, and load testing
• Deep understanding of application security, encryption, authentication, and authorization
• Strong grasp of coding best practices, design patterns, and peer review processes
• Proficient with Git, Maven/Gradle, CI/CD tools (Jenkins, GitLab CI, etc.)
  

Preferred Skills:

• Familiarity with Spring Security, JWT, OAuth2
• Knowledge of Docker, Kubernetes, or cloud platforms (AWS/Azure)
• Exposure to B2B/B2C transaction-heavy applications