I am building a one-stop utility app for Android where users can clear their bills, top up services, and even handle basic transport needs—everything coded natively in Kotlin. The very first milestone is the Billing flow, so your primary focus will be a smooth, secure bill-payment experience... (Budget: ₹12500 - ₹37500 INR, Jobs: Android, Android Studio, API Integration, C# Programming, Java, Kotlin, Mobile App Development, Payment Processing)