2025

Virtual-CFO accounting SaaS, re-engineered from a low-code Base44 prototype into a production-grade Express + Prisma + PostgreSQL backend on AWS.
Full-Stack Engineer — backend re-engineering and integrations
A low-code Base44 prototype needed to become a secure, production-grade accounting platform with reliable QuickBooks sync across multiple realms.
Migrated the prototype to a production Express + Prisma + PostgreSQL backend on AWS with 28 REST endpoints, a full QuickBooks Online OAuth 2.0 flow (multi-realm), and AES-256-GCM encrypted token storage.