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I will fix login, payment and database bugs in your vibe coded app
Tim Leonsteyn
About this gig
Your app is 80% done, and the last 20% keeps breaking. Typical launch blockers I fix:
- Logins that fail or let users see each other's data (Supabase auth and RLS)
- Stripe checkouts and webhooks that don't update the database
- Database errors, slow queries and broken migrations
- Deployments that work locally but fail on Vercel
- Exposed API keys that need to move to the server
How it works:
1. Message me before ordering with what's broken. We agree on exactly which fixes are in scope.
2. I fix them in your repository, test them and explain what changed.
3. You get a 14-day warranty on what I delivered. Bigger or unclear jobs start with my pre-launch audit, and its fee is credited.
Why me: former Head of Tech (single sign-on, security standards). Today I build and run my own production apps on Next.js, Supabase, Postgres and Stripe, including an iOS app on the App Store.
Your code, your accounts. I never keep production credentials after handover.
Get to know Tim Leonsteyn
Tim Leonsteyn
Rescue and launch audits for apps built with AI
- FromGermany
- Member sinceOct 2026
Languages
German, English
Your app is 80% built with Lovable, Bolt, Replit or Cursor, and the last 20% keeps breaking: logins, Stripe payments, the database, deployment. I audit and fix exactly that.
Former Head of Tech (single sign-on, device management, security standards) turned consultant. Today I build and run production software with AI: an iOS app on the App Store and several web apps on Next.js, Supabase, Postgres and Stripe.
Audit first, then a fixed-price fix with clear acceptance criteria. Your code, your accounts, documented handover.
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FAQ
Can I order without messaging first?
Please message me first. A short description of the problem lets me confirm it fits the package, so you never pay for the wrong thing.
What if the problem is bigger than expected?
I stop and tell you before doing more. You decide whether to upgrade the package or get a custom quote. No surprise charges.
What do you need from me?
A description of what is broken, a staging link, access to your repository (a GitHub invite works) and a list of the services you use. We set up any other access together; never send production passwords in chat.
