A working AI SaaS product in four weeks: users can sign up, log in, use the AI feature, and pay you for it.

This is for founders and small teams who have validated the idea and now need the actual product. Not a clickable prototype, and not a demo that falls over when a second person uses it at the same time.

What gets built:

Authentication and user accounts, with roles if your product needs them. Stripe subscriptions with webhooks wired up properly, so a failed payment, a cancellation and an upgrade all do the right thing without you touching the database. A Postgres schema designed for more than one customer from the start, so your second and twentieth customer do not require a rebuild. And the AI layer itself — prompts, model calls, tool use, retries and a log of what the model did, so when a customer complains you can go and read what actually happened.

How the work runs:

Week 1 — scope and schema. I write down, in plain numbers, what "working" means for your product, and we agree the data model before any UI exists. This week prevents most of the expensive mistakes.

Week 2 — the core loop. The one thing your product does, end to end, with real data.

Week 3 — billing, accounts and the rough edges: errors, empty states, rate limits, input validation.

Week 4 — deploy, monitoring, docs and handover. You get a walkthrough recording and a repository your own engineers can take over.

Built with Next.js or FastAPI, Postgres or Supabase, Stripe, and OpenAI or Claude. Prompts and model settings live in files your team can edit, not buried in code you cannot read.

30 days of support after launch for bug fixes.