Zenith Pay
Next-generation peer-to-peer digital wallet, QR checkout, and instant transfer mobile app.
Client
FinTech Labs
Our role
Full-Stack Mobile Engineer
Timeline
2025–2026
Type
Fintech Payment Mobile App
Overview
What we built.
Zenith Pay is a secure digital wallet app empowering users to make sub-second peer-to-peer money transfers, pay utility bills, and complete merchant QR code checkouts. Built with double-entry accounting ledgers and biometrically authenticated transaction approvals.
Key features
- Instant P2P transfers using QR code scanning or phone contacts
- Biometric authentication (FaceID & Fingerprint) for payments
- Virtual and physical debit card issuing and spending limits
- Real-time transaction history with instant push notifications
- Automated recurring bill payment scheduling and reminders
- Bank-grade TLS 1.3 encryption and anti-fraud anomaly flags
Challenge
Guaranteeing sub-second transaction speed during high-volume flash sale traffic spikes without duplicate transfers.
Solution
Architected a distributed Redis lock queue backed by atomic double-entry ledger transactions.
Outcome
Successfully processed over 2 million transactions with zero financial discrepancies.