• Co-designer and implementer of chargeback/dispute management Dockerized microservices at Yapstone using Java, Spring Boot and deployed it In AWS platform

• Developed a highly performant multi-threaded AWS batch job that can process millions of transactions using disruptor concurrency framework

• Simplified the implementation of complex dispute workflow using embedded Camunda BPM and Decision Engine

• Designed and developed REST API for external client interaction with chargeback microservices

• Developed machine learning models in H2O.ai and worked on an automation framework to contest chargeback using the developed model

• Co-implemented GraphQL API solution over Elasticsearch for efficiently accessing domain data in a web portal with minimal latency

• Implemented Masterpass and Apple Pay integration in payment platform using REST API, J2EE, and JSP

• Worked on settlement engine that integrated with FirstData, WorldPay, and Vantiv

• Implemented a Jenkins pipeline that automatically deploys and tests new changes to non-prod platforms

• Pioneered developer-driven API test automation using Karate

• Implemented a POC using Ripple, Corda, and Hyperledger fabric to evaluate the feasibility of using blockchain in a cross border settlement

• Co-implemented REST API for payment processing using Java

• Implemented Masterpass and Apple Pay integration in payment platform using REST API, J2EE and JSP

• Co-implemented REST API for payment processing using Java

• Worked on IBM Sterling CPQ tool to create offers and manage offer catalog for DIRECTV Ltd

• Envisioned and created a web application using Ruby on Rails and MySQL which helped the business team of DIRECTV generate ad-hoc offer reports and thereby reducing their dependency on the development team

• Developed a web application to log weekly timesheets of contractors using Spring MVC and MongoDB. Earlier, the timesheets were logged in excel and send across in an email

• Created XML Stylesheets for rendering XML responses from IBM CPQ tool, which reduced the time required by the developer to debug and test

• Refactored the java logic that evaluates the eligibility of offers in IBM CPQ and thereby improving performance by almost 10%