+50% txn success · wallets & banks
Fintech Android developer — mobile payments that convert
Ahsan Islam is a fintech Android developer who ships production checkout — not sandbox demos. At Ozoned Digital I unified five bank and wallet gateways (JazzCash, Easypaisa, UBL, Meezan, Alfalah) behind one Android checkout and raised transaction success by 50%. On COFE’s white-label platform I own Tap, Checkout.com, Google Pay and GCC rails for live F&B brands.
- +50% txn success
- 5 PK gateways
- GCC wallets live
- 9+ years Kotlin
Pakistan fintech rails
- Mobile wallets — JazzCash and Easypaisa as first-class PaymentProvider implementations.
- Bank gateways — UBL, Meezan and Alfalah behind the same checkout surface as wallets.
- Shared failure UX — provider error mapping, retry eligibility and analytics per initiation/success.
GCC & card rails
- Acquirers — Tap Payments GoSell, Checkout.com Frames, Google Pay, tokenised saved cards.
- Regional wallets — KNET, Benefit, mada, STC Pay, Tabby BNPL (payment integration page).
- In-app tender — wallet balance, gift cards and promo codes before any external gateway call.
Architecture that scales markets
Entering a new market means adding a PaymentProvider class — not forking checkout UI. Availability checks respect currency, amount limits and brand config. 3DS and app-to-app redirects share one lifecycle. Deep dive: payment gateway case study and JazzCash / Easypaisa write-up.
FAQ
- What fintech Android work have you shipped?
- Five PK gateways unified for +50% success at Ozoned; GCC checkout ownership on COFE white-label brands.
- Do you integrate JazzCash and Easypaisa?
- Yes — production wallet integrations with shared error mapping and retry UX.
- Remote hire for EU/GCC?
- Yes — immediate start, Lahore UTC+5 with EU and Gulf overlap.