Contact person: Business Client

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Location: Kolkata, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"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" (client-provided description)