Java Backend Developer

Key Responsibilities

• Develop and maintain RESTful APIs and microservices using Java (11/17/21) and Spring Boot
• Implement business logic for member onboarding, subscriptions, billing, renewals, and cancellations
• Build asynchronous and scalable services using event-driven architecture (Apache Kafka)
• Integrate with external services such as payment gateways and internal APIs
• Contribute to the design of scalable, resilient microservices architecture
• Participate in low-level and high-level design discussions
• Apply design principles for performance, reliability, and scalability
• Work with database design strategies including indexing, query optimization, and basic sharding concepts
• Understand and implement event-driven workflows
• Data & Caching
• Work with SQL (PostgreSQL/MySQL) and NoSQL databases (MongoDB/Cassandra - good to have)
• Implement caching strategies using Redis to improve performance
• Optimize queries and ensure efficient data access patterns
• DevOps & Cloud
• Containerize applications using Docker and deploy on Kubernetes (basic understanding)
• Work with CI/CD pipelines (Jenkins / GitHub Actions)
• Support deployment, monitoring, and debugging in cloud environments (AWS / Azure / GCP)
• Observability & Maintenance
• Maintain applications using tools like Prometheus, Grafana, or ELK stack
• Monitor applications and troubleshoot production issues
• Collaboration
• Collaborate with senior engineers, product managers, and DevOps teams
• Participate in code reviews and design discussions
• Contribute to documentation and knowledge sharing

Required Qualifications

• 5-7 years of backend development experience with strong expertise in Java
• Hands-on experience with Spring Boot and Microservices architecture
• Good understanding of system design fundamentals
• Experience with REST APIs and distributed systems basics
• Working knowledge of Apache Kafka or similar messaging systems
• Experience with relational databases (PostgreSQL/MySQL)
• Familiarity with Redis or caching mechanisms
• Basic understanding of Docker, Kubernetes, and cloud platforms
• Knowledge of security fundamentals (OAuth2, JWT - basic level)

Preferred Qualifications

• Exposure to subscription or billing platforms
• Experience with reactive programming (Spring WebFlux)
• Familiarity with CI/CD and DevOps practices
• Understanding of scalability, fault tolerance, and distributed systems patterns
• Exposure to event-driven architecture, CQRS, or event sourcing (nice to have)