I will develop payment app, fintech app, escrow app, p2p app, cash app, digital wallet

O
otto_taylor
O
otto_taylor
otto
develop payment app, fintech app, escrow app, p2p app, cash app, digital wallet
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develop payment app, fintech app, escrow app, p2p app, cash app, digital wallet

About this gig

Welcome to my gig


Hi, a professional Fintech App Developer specializing in digital wallets, NFC payments, payment gateway integration, and secure mobile app development for startups and businesses.


I develop modern fintech apps, crypto wallets, and payment solutions with smooth UI, secure transactions, and scalable architecture.


Features I Can Develop:

  • NFC contactless payment apps
  • Digital wallet with balance & transactions
  • Payment gateway integration (Stripe, APIs, banking systems)
  • QR scan-to-pay functionality
  • Crypto wallet & multi-currency support
  • Secure authentication & user management
  • Flutter cross-platform fintech apps


My Process

Requirement discussion -> UI/UX planning Development -> Testing Integration -> Delivery


Why Choose Me

  • Secure and scalable fintech solutions
  • Clean and optimized code
  • Fast communication and updates
  • Post-delivery support
  • Requirements
  • App idea or use case
  • Features list
  • API/payment gateway details
  • Design or reference (if available)


Contact me before placing an order to discuss your fintech app project.

  • App type

    • Native

  • Programming language

    • C
    • Dart
    • Delphi (Object Pascal)
    • Java
    • Kotlin
    • Python
    • Ruby
    • TypeScript
    • HTML
    • Flutter

  • Frameworks

    • Flutter
    • Ionic
    • Appcelerator Titanium
    • NativeScript
    • Kodular
    • Jetpack Compose Multiplatform
    • React Native

  • Purpose

    • Chat
    • Restaurant
    • Shopping
    • Taxi
    • Booking
    • Entertainment
    • Education
    • News
    • Crypto
    • Wallet app

  • Tools

    • Thunkable
    • Power apps
    • Bubble
    • Flutterflow
    • AppSheet
    • Android Studio
    • AppGyver

  • Expertise

    • Cross browser/Device compatibility

Get to know otto

otto

I Listen for What's Unsaid, Then Build What Matters

  • FromArgentina
  • Member sinceAug 2026

  • Languages

    English, Spanish, French, German, Portuguese
I am Otto, founder of ThinkBuilt Solutions. I’ve led 100+ full-stack projects globally—from SaaS and AI-based coaching tools to QR payment systems, document editors, e-commerce platforms, social marketplaces, and real-time dashboards. I work with React, Next.js, Node.js, MongoDB, and AWS to build clean, scalable systems. Clients from the US, UK, Europe, and the Middle East trust me to turn raw ideas into launch-ready apps with purpose, speed, and technical clarity. Let’s build software that works—and means something.

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