● Designed and optimized scalable backend systems using microservices architecture and RESTful APIs, ensuring high availability and efficiency. ● Converted a Monolithic architecture project into an event-driven Microservices architecture project using RabbitMQ for improving system responsiveness, business feature implementation by 55%. ● Optimized RESTful APIs with Typescript, NestJS, PostgreSQL, reducing latency by 63% through caching strategies and raw CTE queries, enhancing user experience. ● Designed and Implemented choreographed SAGA pattern for a scalable Request/Notification Module in 3 interlinked Microservices, enabling variable approval levels in a request chain. ● Led a large-scale Data migration, efficiently transferring over 1500000+ records with 0 downtime between disparate database structures, ensuring data integrity and alignment. ● Partnered with cross-functional agile teams (Frontend, DevOps) to deploy and monitor backend services via Grafana/Loki, optimizing performance and ensuring 99.9% system uptime and high availability. ● Implemented employee registration workflow integrating JWT Authentication and role-based authorization mechanisms facilitating login, signup, and logout flows.