Aug 2018 – Mar 2021 · 2 yrs 7 mos · Noida Area, India

• Worked in Paytm's cashback and Paytmmall's Fulfilment and Return team which is responsible for managing Order Fulfilment Ecosystem that acts as a driver for receiving, processing and delivering orders to end customers. It involves end to end integration with a user’s Cart, an Order Management System, Seller Panel and Logistics for fulfilling Customer Orders.
• > Developed a centralised and dedicated mock server for Paytm Mall.
• > Built a centralized data manager service to support service-level data needs and reduce cross-service dependencies.
• > Designed and implemented a GoReplay (Record & Play) tool for the Fulfilment and Returns service , which captures live production traffic to support server/code migration, API-level latency analysis, and load replay in lower environments.
• > Independently managed and maintained Fulfilment automation libraries, reporting dashboards, and notification services to support internal automation and operations teams.
• > Gained solid understanding and hands-on experience with microservice architecture and its deployment at scale.
• > Received multiple recognitions for outstanding performance: 2x Rockstar Awards and 1x Rising Star Award.
• Technology/Tools :
• Java , springboot , JDBC ,JPA , mySql , Aerospike , SQS , PostMan , Linux , TestNg , AWS , Redis .

Jun 2017 – Aug 2018 · 1 yr 2 mos

• Worked in the Core Payments team at PayU, responsible for building and validating high-scale, real-time payment systems that processed millions of transactions daily across cards, UPI, net banking, recurring payments, and wallets—within a secure and PCI-compliant environment. Developed deep domain expertise in E-commerce payment infrastructure and secure transaction processing.
• Key Contributions:
• Maintained and enhanced the automation framework for critical payment flows.
• Developed mock services for multiple payment gateways, enabling comprehensive end-to-end test coverage.
• Built Wrk CLI tools using Lua scripts for API performance testing and load generation.
• Contributed to several high-impact projects, including:
• Integration of new payment options and gateways.
• Store card management using AWS KMS.
• Recurring payments and tokenization.
• Dynamic gateway switching to optimize transaction success rates.
• Participated in war rooms during weekly deployments and high-concurrency events such as Big Billion Days, Redmi flash sales, and festival sales.
• Technologies: Java, PHP, Selenium, TestNG, RestAssured, MySQL, Linux, Lua, Wrk, AWS S3, AWS KMS

Jun 2015 – Jun 2017 · 2 yrs

Jan 2015 – Jun 2015 · 5 mos