Experience

• Building Celler — a B2B fintech platform for buying & selling crypto and fiat

• Led full rewrite of Celler V2, migrating from Laravel (V1) to NestJS + PostgreSQL

• Designed scalable backend for multi-sided crypto/fiat marketplace with B2B flows

• Integrated backend APIs into React/Next.js frontend using TanStack Query

• Fine-tuned UI logic and validated API contracts end-to-end in production

• Led Bloomvest V2 launch end-to-end as Engineering Lead

• Migrated legacy SQL → PostgreSQL at scale

• Refactored Express.js → NestJS (modular, testable architecture)

• Designed APIs for investment flows, portfolios & financial transactions

• Implemented backend APIs into React/Next.js frontend using TanStack Query

• Worked closely with product and frontend teams to ship stable releases

• Built 2 production projects using NestJS, Express.js, MySQL, Prisma & PostgreSQL

• Designed and delivered full backend systems from scratch per client specs

• Built Trilla — real estate platform with fractional ownership & fiat/crypto

• Built TriPay — QR/NFC scan-to-pay gateway with FX engine & merchant APIs

• Designed multi-role architectures: Users, Wallets, Transactions, Agents, Admins

• Integrated Ethers.js and Web3.js across DeFi products — Curvance, Moziac, Pike, The Rollup

• Built smart contract integrations: reading state, listening to on-chain events, triggering txns

• Architected a high-performance blockchain indexer for Curvance (faster on-chain data retrieval)

• Built secure backend for The Rollup with MetaMask/email auth using GraphQL + Clerk

• Created Studio Attendance Bot in Go

• NFT marketplaces, DEXs, trading bots, mini Telegram apps

• Custom Web3 lottery apps, e-commerce APIs, blogging platforms