Cross-Platform Startup Mobile App

I’m building a brand-new startup and need a skilled developer to turn my core product idea into a full-featured mobile application available on both iOS and Android.
The concept and basic user flows are already mapped out; what I now require is end-to-end execution—architecture, clean and scalable code, intuitive UI/UX, thorough testing, and publication to the App Store and Google Play.

You’ll help me refine the technical stack (native Swift/Kotlin, Flutter, or React Native—open to what best suits long-term maintenance), set up secure backend connectivity, integrate analytics, and prepare a smooth onboarding experience for our first users. Clear communication, regular demos, and well-documented commits are a must because I want to iterate quickly and keep stakeholders in the loop.

Deliverables (at minimum)
• Functional iOS and Android apps matching the agreed feature set
• Source code in a private repo with explanatory README
• Build and release pipelines ready for TestFlight and internal Android testing
• Basic analytics and crash reporting hooked up
• Post-launch support window for bug fixes

If you’ve launched cross-platform apps before and can guide a startup team through best practices, I’d love to hear how you’d tackle this project, which frameworks you recommend, and see samples of your previous work.