Microservices Development: Designed and maintained microservices to enhance modularity and scalability.Security Implementation: Strengthened application security using OAuth 2.0 and JWT tokens, reducing unauthorized access attempts.Performance Optimization: Improved API response times through effective caching strategies.Payment Integration: Integrated third-party payment gateways to facilitate seamless transactions.Message Handling: Utilized Kafka to decouple services, improving message handling efficiency and reducing latency.Traffic Management: Managed traffic and load balancing to ensure high availability and uptime.Deployment and Containerization: Deployed applications on AWS and containerized them using Docker for consistency across environments.Database Management: Streamlined database interactions and optimized data handling efficiency.Concurrency Management: Resolved concurrency issues to improve user interaction and eliminate functionality ambiguities.Automated Testing: Implemented automated testing procedures to increase code reliability and reduce downtime.User Feedback Analysis: Analyzed user feedback to drive feature enhancements and improve user retention.