Java Microservices Backend Developer

Job Title

**Java Microservices Backend Developer**

Experience

**5–10 years** of hands-on experience in Java backend development and Microservices architecture.

Role Overview

We are looking for a **strong Java Backend Developer** with hands-on experience building and supporting **enterprise-grade Microservices applications**.

The ideal candidate should have strong expertise in **Java 17, Spring Boot, REST APIs, Kafka, JMS, Oracle Database, OpenAPI, Docker, and Cloud deployments**. The candidate will work closely with architects and other engineering teams to design, develop, integrate, test, and deploy scalable backend services.

This role requires someone who can **independently develop production-ready Microservices**, understand distributed systems, troubleshoot issues, and follow modern software engineering practices.

Key Responsibilities

* Design, develop, and maintain **Java-based Microservices** using Java 17 and Spring Boot.

* Develop scalable and secure **RESTful APIs** for enterprise applications.

* Design and maintain API contracts using **OpenAPI/Swagger**.

* Implement event-driven communication using **Apache Kafka**.

* Develop asynchronous messaging solutions using **JMS/message brokers**.

* Design database solutions and develop efficient SQL queries using **Oracle Database**.

* Implement proper transaction management, exception handling, validation, logging, and monitoring.

* Containerize applications using **Docker**.

* Deploy and support Microservices in **Cloud environments**.

* Work with DevOps teams for CI/CD, container deployment, configuration, and production releases.

* Implement service-to-service communication and integration with external systems.

* Analyze application performance and resolve scalability and production issues.

* Write clean, maintainable, testable, and production-grade code.

* Develop unit and integration tests and participate in code reviews.

* Follow Microservices design principles, SOLID principles, design patterns, and enterprise coding standards.

* Collaborate with Solution Architects, Product Owners, QA, DevOps, and other development teams.

* Participate in technical discussions, solution design, estimation, and implementation.

Mandatory Technical Skills

**Core Java**

* Strong hands-on experience with **Java 17**

* Collections, Streams, Lambda, Multithreading, Concurrency

* Exception handling and JVM fundamentals

* Object-oriented design and SOLID principles

* Design patterns

**Spring / Spring Boot**

* Strong experience with **Spring Boot 3.x**

* Spring Core, Spring MVC

* Spring Data JPA

* Spring Security

* Configuration and externalized properties

* Exception handling and validation

* Transaction management

**Microservices**

* Strong hands-on experience designing and developing **Microservices**

* Service-to-service communication

* API Gateway concepts

* Distributed transactions

* Resilience and fault tolerance

* Service discovery/configuration concepts

* Scalability and performance considerations

**REST / API Development**

* RESTful API development

* HTTP/HTTPS, JSON

* API versioning

* Authentication and authorization

* **OpenAPI / Swagger**

* API documentation and contract-first/API-first development

**Messaging**

* Strong experience with **Apache Kafka**

* Producers and Consumers

* Topics, partitions, consumer groups

* Offset management

* Error handling and retry mechanisms

* Event-driven architecture

* Hands-on experience with **JMS**

* Asynchronous messaging and message processing

**Database**

* Strong experience with **Oracle Database**

* SQL and complex queries

* Joins, indexes, constraints

* Stored procedures/functions

* Query optimization and performance tuning

* Experience with JPA/Hibernate

**Containerization & Cloud**

* Hands-on experience with **Docker**

* Creating Dockerfiles and containerizing Spring Boot applications

* Understanding of container configuration and networking

* Experience deploying Microservices to a **Cloud environment**

* Exposure to Kubernetes is highly desirable

* Experience with **AWS / Azure / GCP** is preferred

Development & Engineering Practices

* Git/GitHub/GitLab

* CI/CD pipelines

* Maven/Gradle

...