Simon Martín

Production Diagnostic

In five business days you’ll know what to do, what it costs and why.

A senior engineer’s review of your app, built on Lovable, Bolt, Replit, Base44, v0 or with an AI coding tool, with a written verdict you can act on.

Start the diagnostic (€590)Book a 20-min call first

What I review

Data access and security

Supabase row-level security, auth flows, exposed keys and secrets, edge functions without checks, admin routes.

Payments

Stripe webhooks, retries and idempotency, what happens when a payment fails or is refunded.

Data safety

Backups, whether you can actually restore them, and how risky your database changes are.

Performance and limits

Slow queries, missing indexes, and where the app will break as usage grows.

Platform cost

What credits, hosting and AI usage will cost at 1,000 and 5,000 users, compared with running it yourself.

Maintainability

Whether a developer can take over the code, and how hard it is to change it safely.

Deploys and environments

Separate dev and production, how changes reach users, and how to roll back.

Compliance basics

Personal data you store, where it lives and the basics of GDPR you need covered.

What you get

  • A written report with every finding ranked as critical, high or medium, explained in plain words
  • A clear verdict (stay, fix, move or rebuild) with the reasoning behind it
  • Time and cost estimates for each option, and a 12-month cost comparison
  • A prioritized plan you can follow with me, with another developer, or on your own
  • A 45-minute call to walk through the report and answer questions
  • 30 days of follow-up questions by email

How it works

  1. Short call. 20 minutes to check that a diagnostic makes sense for your app.
  2. Payment and access. You pay the fixed price and share read-only access. NDA if you want one.
  3. Review. I review the app and the code. I don’t change anything in it.
  4. Report and call. Within five business days you get the report, and we go through it together.

Price

€590

Fixed. VAT added where it applies.

  • Credited in full if you hire me for the next step within 60 days
  • If the report doesn’t help you decide, I’ll refund you
Start the diagnostic

What I need from you

  • Read-only access to the repository, or a GitHub export of your project
  • Read-only access to your Supabase (or database) project
  • A short description of the app, your users and what worries you
  • About an hour of your time in total, for the two calls

I only look at what you give me access to, and I delete my copies when we finish.