Recharge & Bill Payment Software

I’m looking to have a complete software solution built that allows end-users to top-up mobile numbers and pay their routine bills from one place. The platform must handle both mobile prepaid recharges and common bill payments seamlessly, routing every transaction through the payment channels I accept today: • UPI or recognised mobile wallets Everything—user interface, transaction engine, payment gateway integration, operator/biller connectivity, security measures, and admin reporting—should work together smoothly so a customer can move from login to successful confirmation in a few taps or clicks. What I need from you Bring me a detailed project proposal that explains the architecture you plan to use, the APIs or gateways you’ll connect to, the tech stack, milestones, testing approach, and post-launch support. If you’ve tackled similar recharge or bill-pay systems before, reference them briefly so I can see how your experience aligns. Acceptance criteria • Mobile recharge and utility bill payment flows must process successfully end-to-end through UPI/mobile wallet checkout in a staging environment we both can access. • Real-time status updates and clear error handling are visible to the user and the admin dashboard. • Complete source code, build instructions, and basic user/admin documentation are delivered before final sign-off. If you have questions or need clarifications, include them in your proposal so we can lock the scope early and move straight into development.