I’m planning to launch a dedicated Android application and I need an experienced mobile app developer to bring it to life. The core requirement is a smooth, secure online-payment flow embedded directly in the app—think in-app checkout, card or wallet integrations, and a receipt system that users can trust. Here’s what I expect: • An Android-native build (Java or Kotlin) that runs reliably across recent OS versions. • Fully functional payment gateway integration, tested end-to-end in both sandbox and live modes. • Clean, well-commented code that I can hand over to another developer in the future if needed. • An APK plus source code delivered through a private repo, with installation instructions. Acceptance criteria • Payments process successfully without crashes or UI freezes. • Transaction data is encrypted during transmission and stored only when absolutely necessary. • The final build is accepted to Google Play’s internal test track without policy violations. If you’ve shipped Android apps featuring in-app payments before, I’d love to see a quick demo or link. Let’s discuss timelines and any gateway suggestions you might have so we can get started right away.