Contact Only If You Have a Working Demo API Handles 500 Requests Per Second Seeking a developer/team to build and launch a full-featured recharge and bill payment platform, optimized for Android app and responsive web. Users need seamless support for electricity, water, gas utility bills and mobile top-ups—simple flow: login, select service, enter details, review amount, pay, get instant confirmation + email/SMS receipt. Key requirements: • Modern, customizable UI for web (responsive on all browsers) and Android app (Play Store-ready). • Secure REST API backend with admin panel for user/operator management, plans, transactions, refunds, and full audit logs. Reliable API callbacks/polling for real-time provider status. • Integrate 1+ major Indian payment gateway (e.g., Razorpay/Paytm), with extensibility for more. • Robust error handling, reconciliation, and alerts for failed/pending txns. Tech stack flexible (e.g., React/React Native + Node/Laravel, Flutter + backend of choice)—prioritize performance, modularity, security. Acceptance: End-to-end txns traceable in dashboard; app passes Play Console; web works on Chrome/Firefox/Safari. Share live demo links/APKs of past recharge/bill payment projects to evaluate UX. Ready for fast, reliable rollout