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2025

Stedi

Stedi

Virtual-CFO accounting SaaS, re-engineered from a low-code Base44 prototype into a production-grade Express + Prisma + PostgreSQL backend on AWS.

My role

Full-Stack Engineer — backend re-engineering and integrations

Problem

A low-code Base44 prototype needed to become a secure, production-grade accounting platform with reliable QuickBooks sync across multiple realms.

Solution

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.

Outcomes

  • 28 production REST endpoints replacing the low-code prototype
  • Multi-realm QuickBooks Online OAuth 2.0 integration
  • AES-256-GCM encrypted token storage for secure credentials
Express.jsPrismaPostgreSQLAWSQuickBooks OAuth 2.0AES-256-GCM