Kumar Vamsi

Designed and developed two payment gateway solutions from scratch, including transaction monitoring, wallet management, and admin/user tools. Implemented authentication and security mechanisms for client websites, and delivered complete end-to-end solutions from design through deployment. Collaborated with clients to gather requirements and ensure scalable application delivery while maintaining ownership of key development tasks.

Architected and delivered the office’s first Spring Boot JWT-based backend integrated with an Angular front-end for the Ovs Compass Project, focusing on security and scalability. Upgraded legacy Flowable Engine workflows from JDK 15 to JDK 17, removed Tiles configuration, transitioned required workflow components towards Angular, and modernized authentication using Spring OAuth2 Resource Server and OAuth Client. Independently built a new Spring Authentication bridge app to connect client applications with resource servers using token-based authentication. Also contributed to a legacy NYPD project upgrade from JDK 1.8 to JDK 15 and migrated Spring to Spring Boot with necessary implementation changes. Built AWS Lambda health-check functions for running applications, implemented Hazelcast session replication to support high-traffic Spring sessions, and developed a Python-based trade monitoring/analysis app to monitor user trading activity.