Michael B.

I build mobile apps end to end and get them live. Not just code, but the part most people get stuck on: certificates, builds, TestFlight, App Store and Play Store review. What I do: • iOS + Android apps from one codebase (React Native / Expo, TypeScript) • Backend with Supabase/Postgres: auth, database, row-level security, storage • Security reviews for Supabase RLS and Firebase rules: I test with two normal accounts, prove every gap, fix it and re-test • Automated build pipelines (Codemagic) so every update ships in minutes • Publishing to App Store Connect and Google Play, including review fixes • Finishing or fixing half-built apps (Lovable, Bolt, Replit, old React Native projects) • Web apps and internal tools: dashboards, booking, forms, customer portals Recent work: • A field-sales app for a small business: Supabase backend, offline-tolerant call list, scheduling logic, call logging, WhatsApp/email templates, shipped to TestFlight with automated builds • Security reviews of Supabase apps: tenant isolation, role and invite flows, users who could edit their own premium status or read other users' data, each fixed and re-tested • A site generator that builds and deploys 500+ static business sites with per-site content and images • Data pipelines against Google Places and the App Store API with caching, quotas and deduplication How I work: you get a fixed price and a clear scope before we start, a working build early rather than a status report, and daily updates. I reply fast and I don't disappear after delivery. Maintenance is available monthly. Based in Germany, working with clients worldwide. English and German. Auf Deutsch: Ich entwickle iOS- und Android-Apps (React Native / Expo, Supabase) von der Idee bis zur Veröffentlichung im App Store und Google Play, und prüfe bestehende Supabase- und Firebase-Apps auf Sicherheitslücken. Festpreis und klarer Umfang vor Projektstart, Kommunikation gern auf Deutsch.