Java Backend Developer - Microservices Architecture/Spring Boot (3-10 yrs)

Key Responsibilities :

- Design, develop, and maintain RESTful APIs and Microservices using Java & Spring Boot.

- Optimize backend services for scalability, performance, and security.

- Implement asynchronous processing using Kafka, RabbitMQ, or ActiveMQ.

- Work with GraphQL and WebSockets for real-time applications.

- Develop and optimize database queries using PostgreSQL, MySQL, or MongoDB.

- Work with ORM frameworks like Hibernate, JPA for database interactions.

- Implement caching mechanisms using Redis, Memcached, or Hazelcast.

- Handle database migrations using Flyway or Liquibase.

- Develop Microservices-based architectures using Spring Cloud.

- Implement service discovery, load balancing, and API gateways (Eureka, Zuul, Consul).

- Deploy applications on AWS, Azure, or Google Cloud.

- Work with Docker, Kubernetes, and serverless computing (AWS Lambda, Google Cloud Functions).

- Implement OAuth2, JWT, and role-based access control (RBAC).

- Secure APIs from CSRF, XSS, SQL Injection, and other vulnerabilities.

- Optimize application performance using profiling tools like JProfiler, YourKit, or New Relic.

- Implement rate limiting, throttling, and circuit breakers.

- Automate builds and deployments using Jenkins, GitHub Actions, or GitLab CI/CD.

- Containerize applications with Docker and orchestrate with Kubernetes.

- Monitor and log application performance using ELK Stack, Prometheus, Grafana.

- Write unit and integration tests using JUnit, Mockito, TestNG.

- Perform code reviews, debugging, and refactoring for maintainability.

- Implement test-driven development (TDD) and continuous testing.

Required Skills & Qualifications :

Experience : 3-10 years in Java backend development.

Education : Bachelor's/Master's degree in Computer Science, IT, or a related field.

- Strong expertise in Java 8+, Spring Boot, and Spring Framework.

- Experience with Microservices, RESTful API development.

- Knowledge of JPA, Hibernate, and database optimization techniques.

- Experience with PostgreSQL, MySQL, MongoDB, or Cassandra.

- Proficiency in SQL tuning, indexing, and performance optimization.

- Hands-on experience with AWS (EC2, S3, RDS, Lambda), Azure, or GCP.

- Knowledge of Docker, Kubernetes, Terraform, and CI/CD pipelines.

Messaging & Event-Driven Architecture :

- Experience with Apache Kafka, RabbitMQ, ActiveMQ, or Google Pub/Sub.

- Implementation of event-driven architecture for real-time data processing.

- Expertise in secure coding practices, authentication, and authorization.

- Strong understanding of API rate limiting, caching, and load balancing.

Preferred Qualifications :

- Experience with Reactive Programming (Project Reactor, WebFlux).

- Knowledge of Serverless architectures and NoSQL databases.

- Familiarity with GraphQL, gRPC, or WebSockets.

- Contributions to open-source projects.