• Working in Returns application platform. Successfully delivered Phase 1 & 2 of Local Marketplace initiatives, improving returns/refunds and enabling returns at Seller stores. Actively participated in design, development, and automation; supported end-to-end testing and post-deployment onboarding.• DB Purging for space reduction and cost optimization, automating the process with Python and Workflow Scheduler, achieving 90% manual effort reduction.• Successfully Onboarded a New Shard to production, optimizing storage and routed traffic to the new shards.

• Implemented distributed locking mechanism using spring and prevent concurrent updates in a distributed environment.• Designed RabbitMQ Messaging Queue for asynchronous communication, replacing synchronous, resulting in a 40% reduction in request latency and improved fault tolerance for inter-application communication.• 20% performance enhanced by scaled up data source such that adding multi node cluster and master-slave nodes with read-write strategy and have done DevOps activity on help migrating them.• Optimized batch processing for the import of large amounts of data from PIM (which has millions of products and their characteristics) into parallel environment using Spring Batch, which brings efficiency, reliability and scalability.

• Diagnosed and resolved production issues as a key member of the O&M team; conducted root cause analysis using AWS CloudWatch and Tomcat logs, resulting in a 25% reduction in critical incidents and increased system stability.• Developed different cache layer such as Redis, L2 cache with LRU algorithm to improve the efficiency of data retrieval.• Migrated monolithic to microservice architecture, database segregation. By making high availability and scalable system, Customer issue has been reduced by 10% and executed production deployments through CI/CD on Jenkins.◦ Developed a customized export report API (Created multiple worksheets with dynamic Headers and Data under workbook using Apache Poi Library very efficient and Attendance management system by applying multiple dates filter in UI integration with dynamic horizontal scroll in angular◦ Implemented POC for Route 53 domain mapping with S3 Bucket and for cloud file access used with AWS SDK, For firewall restriction from corporate training.

◦ Integrated third-party application APIs with a robust rate limiter, fault tolerance mechanisms, and robust authorization including Security (backend-frontend).◦ Optimized several Rest APIs with response time less than 200ms and Integrating APIs to frontend application.◦ Implemented Change detection mechanism in angular application which reduced page slowness/load time and hang issues on rendering bulk data on single page.◦ Implemented and demonstrated the Hibernate Level 2 cache, Explored spring boot Redis Cache◦ Designed and developed a prototype application from the ground up, establishing development standards with proper design patterns, best practices, and component architecture. Integrated security mechanisms, developed backend APIs, and achieved seamless frontend integration.