Cavestone

Production-grade product engineering

Software, built to last.

Production-grade product engineering for founders who've taken an idea as far as AI can.

The situation

It works great. Until it doesn't.

Built with Lovable, Bolt, or Cursor, it works in the room — then breaks the moment it meets the world: auth that doesn't hold, data you can't trust, a codebase no one can safely change. That's not failure. It's the point where most ideas need an engineer.

The approach

What you have ain't nothing.

It's the clearest brief you could hand us. You've already done the hardest part — working out what to build. Our job is to build it on a foundation that holds, and to tell you honestly what's worth keeping and what isn't. Including, sometimes: leave it as it is for now.

The build-readiness review

A fixed-price review that turns your prototype into a plan.

A clear-eyed review of what you've built — or sketched — and a plan for turning it into a product that holds up.

What you get

A 15-20 min recorded walkthrough

A recorded walkthrough of exactly what you've built; what works, what doesn't, and what it needs to be production-ready.

A detailed written report

The hero deliverable — a recorded walkthrough of exactly what you've built and what it needs.

A 45 minute call

To walk through the findings and discuss your options.

What it covers

Get in touch for a quote.

We aim to respond within 24 hours.

Get in touch

What we do

Two ways to work together.

Custom Product Build

The main engagement. From your prototype or spec to a production-grade product — built to last, on a foundation that holds.

Product Engineering

Frontend Advisory

Frontend consultancy for teams that need senior hands. Available locally across Suffolk and the wider UK.

Frontend Consultancy