Raman developed backend features for the nammayatri/nammayatri and nammayatri/shared-kernel repositories, focusing on API and payment integration using Haskell. He built a Driver Payout Status API, exposing payout data to the frontend to support dashboard and reporting needs, and refined the API structure for better data accessibility. In payment processing, he enhanced the PaytmEDC payment flow by implementing detailed transaction status handling, result code parsing, and robust response structures, while also adding checksum generation and encryption of sensitive fields to improve security and compliance. Raman’s work demonstrated depth in backend development, API design, and secure payment integration within Haskell systems.