Erick José M.

Top Rated Plus Mobile Developer | $100K+ earned | 4,200+ hours | 15+ years of experience I help companies build, improve, and rescue iOS and Android applications — from existing production apps that need an experienced developer to new mobile products preparing for launch. My core expertise is native iOS (Swift/SwiftUI), native Android (Kotlin/Compose), Flutter, and React Native, with strong experience integrating AI, APIs, payments, subscriptions, push notifications, and cloud services. I’m often brought into projects where an app already exists but needs a senior developer to take ownership: fixing difficult bugs, improving architecture and performance, completing unfinished features, integrating AI or third-party services, and getting the app successfully released on the App Store and Google Play. What I can help you with: ✓ iOS — Swift, SwiftUI, Objective-C ✓ Android — Kotlin, Java, Jetpack Compose ✓ Flutter & React Native ✓ AI / LLM / Voice AI integrations ✓ Firebase, Supabase, AWS ✓ RevenueCat, Stripe & In-App Purchases ✓ REST APIs & backend integrations ✓ Push notifications & deep links ✓ App Store & Google Play releases ✓ Existing app maintenance & troubleshooting Have an existing mobile app that needs work? Send me a short description of the app and the problem you're facing. I can review the situation and suggest the best next step.