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Architected a scalable NestJS backend for real-time raffles, live bidding, and voting — 42 RESTful API endpoints across 6 core feature domains, Redis pub/sub driving real-time state without hitting the database on every read, and sub-300ms response times at up to 300 concurrent users.
Building and shipping features on a NestJS/Prisma backend for a cross-border digital wallet, supporting instant transfers, QR payments, and local cash deposits across US, European, and African payment rails.
As a backend developer, I was responsible for designing and implementing various functions to enhance the functionality of web applications. This included developing and integrating server-side logic and APIs to enable seamless interaction between users and the application. My work focused on ensuring robust performance, security, and scalability, allowing for an efficient and responsive user experience.
Payment gateway backend — API-driven crypto-to-fiat conversion and transaction settlement
NestJS API aggregating on-chain data to trace wallet identities, bridge activity, and exit paths
Telegram bot backend — real-time bridge-quote aggregation via API and WebSocket streams across chains
API and market-resolution backend for onchain prediction markets on Monad
Donation-payments backend integrated with a full-stack app for transparent onchain giving
Trading bot backend — real-time price monitoring and automated trade execution on Solana
Multi-chain token deployment API — configurable ERC-20/721 factory with deployment tracking