A collection of fintech platforms, blockchain solutions, and web applications I've built over the years.
Fintech Platform
A gift-card-and-crypto fintech platform serving 300K+ users. Hired on Fiverr to work on a Laravel monolith, I became the lead developer and rebuilt it single-handed into 17 NestJS microservices — with crypto rails, a mobile app, and a double-entry ledger on live money.
White-label Exchange
B2B white-label crypto exchange with low latency trading engine, 20+ blockchains, hot/cold wallets, sub-10ms execution.
Wallet as a Service
Multi-chain wallet supporting 8 blockchains, payment gateway, realtime webhooks & blockchain indexing.
Mobile App
The React Native (Expo) mobile app for the GCBuying fintech platform — gift cards, crypto trading, wallets, and bill payments on one cross-platform codebase, with 100K+ downloads, riding on the platform's GraphQL microservices backend.
Self-custodial crypto wallet with multi-chain support, Uniswap V3 swaps, and WalletConnect integration.
DeFi / DEX Aggregator
Combines 1inch aggregation with Uniswap V3 pools to find optimal trading routes.