Custom Software DevelopmentUnited Kingdom· 4 weeks to productionRepresentative engagement

Hardened an AI-generated prototype into secure, scalable production software — in time for the investor demo.

Custom Software Development project visual — Prototype → production in 4 weeks

4 weeks

To production

0

Critical bugs at launch

$1.2M

Seed raised after demo

The problem

A founder had a genuinely impressive prototype built in an AI coding tool — the UI worked and users loved it — but under the hood there was no real authentication, no database migrations, no tests, and a data model that wouldn't survive real usage. Investors expected a live demo in a month, and shipping it as-is would have leaked data on day one.

Our solution

We kept the UI the founder loved and rebuilt everything risky underneath it: real auth, a sound data model, typed APIs, tests, payments and monitoring — so the product could actually take real users and real money without falling over.

What we did

  • Ran a security and architecture audit to map exactly what was unsafe or unscalable.
  • Replaced mocked auth with real authentication, sessions and role-based access control.
  • Redesigned the data model and introduced versioned database migrations with Drizzle.
  • Wrapped the backend in typed tRPC APIs, added a test suite, and integrated Stripe for live billing.
  • Set up CI/CD, error monitoring and observability so issues surface before users hit them.

The outcome

The founder walked into the raise with a product that actually held up under scrutiny — same UI investors had seen, now on foundations that could scale — and closed the round.

They kept the app we loved and rebuilt everything dangerous underneath it. We demoed on real infrastructure and closed the round a month later.
Founder & CEO · UK SaaS Startup

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