Java Spring Boot Developer 3-5 yrs - Mumbai

Job Description

Job Description: We are seeking a highly skilled Java Spring Boot Developer with 35 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: 35 years of experience with Java 8+ 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