maues

Worked on backend microservices for a blockchain-based payment system using Express.js, PostgreSQL, Redis, and BullMQ, enabling immediate and scheduled transactions via ERC-4337 Account Abstraction and session keys. Designed a multi-step payment mechanism enabling users to define payment titles, select assets and chains, add groups or individual recipients with customizable amounts, and execute transactions via wallet connection or internal balance, optimizing for salary disbursements and bulk crypto payouts while ensuring secure, role-based access. Built React.js frontend interfaces with Wagmi, RainbowKit, and TanStack Query, creating dashboards for batch instruction management, payment sessions, webhook configurations, and integrating APIs for seamless user flows and transaction execution.

Built proof-of-concept dApps utilizing the Flare Data Connector (FDC) and Flare Time Series Oracle, integrating front-end flows, Viem, and smart contract interactions. Designed and deployed Solidity smart contracts that consume attested data via FDC, verifying cross-chain events for secure workflows.

Developed a blockchain-based full-stack web application for a healthcare product incubated at IIT-M Research Park, using MERN stack and ensuring seamless user management processes. Developed and integrated Solidity Smart Contracts with REST APIs, contributing to a robust backend that enabled secure, blockchain-powered transactions and efficient user interactions. Collaborated effectively in a remote team environment, taking ownership of feature implementations and debugging deployment issues, ensuring project readiness for a live demo with 50+ users.