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I will develop fintech app crypto wallet payment app neobank p2p lending app
MASON
About this gig
Fintech app development that ships crypto wallets, payment apps, neobanks, and P2P lending platforms built cross-platform on Flutter.
Your fintech idea deserves more than a generic template. Every app I deliver is built from scratch, secure by architecture, and optimised for Android, iOS, and Web from one codebase.
What I build:
- Crypto Wallet App multi-currency, on-ramp/off-ramp, seed phrase auth
- Payment App Stripe, Paystack, Flutterwave, or custom gateway integration
- Neobank App account management, card controls, transaction history
- P2P Lending App borrower/lender flows, repayment schedules, notifications
- BNPL App Buy Now Pay Later checkout and credit scoring logic
- Money Transfer App real-time FX, multi-currency, recipient management
- Investment App portfolio tracking, trade execution UI
Every build includes:
- JWT authentication + biometric login
- Bank-grade AES encryption on all transaction data
- Figma design handoff + source code ownership
- 36 months post-delivery support
- Scalable Node.js or Firebase backend
Message me your specs before ordering I'll send a detailed scope and timeline within 1 hour.
Get to know MASON
MASON
Flutter React Native Fintech App Developer KYC Wallet Payments
- FromUnited Kingdom
- Member sinceJun 2026
- Avg. response time7 hours
Languages
Dutch, English, German, French, Spanish, Italian
Fintech apps shipped for startups and financial platform across crypto wallets, P2P lending, neobanks, and payment gateways. I build cross platform mobile and web solutions in Flutter, React Native, and Node.js — covering UI/UX design through to secure backend with JWT auth, KYC/AML integration, Stripe, and multi-currency wallet systems. Clients get pixel-accurate screens, scalable architecture, and source code. 5+ years building apps that handle money: zero-lag transactions, bankgrade encryption and regulatory-compliant flows out of the box. Message me with your specs I'll reply within 1 hour
My Portfolio
FAQ
Will my fintech app work on both Android and iOS?
Yes. I build with Flutter, which produces a single codebase that runs natively on Android, iOS, and web. You get one product, three platforms, with no compromise on performance or UI quality.
How do you secure user data and transactions?
Every app ships with AES-256 encryption, JWT-based authentication, optional biometric login, and secure API calls over HTTPS. For financial apps, I also implement OTP/MFA and session timeout logic by default.
Can you integrate my preferred payment gateway?
Yes — Stripe, Paystack, Flutterwave, PayPal, Square, or any custom REST API gateway. I handle the full integration including webhooks, error handling, and transaction logging on the backend.
Do I own the source code after delivery?
Full ownership. You receive 100% of the source code, all assets, and documentation. No licensing fees, no lock-in. You can deploy, modify, or hand it to another developer at any time.
