I will build secure payment processor, card payment gateway, and crypto payment gateway

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Emmy

About this gig

Welcome to my service


I have designed secure payment gateways and facilitated integrations of cryptocurrency payment processors that effectively manage over $50 million in secure transactions. I specialize in developing robust checkout infrastructures and seamless payment processes tailored for e-commerce brands, software as a service (SaaS) platforms, and high-volume digital merchants.


Whether the requirement is to accept traditional credit and debit cards on a global scale or to implement decentralized cryptocurrency payment solutions, I provide production-ready code that minimizes the occurrence of failed transactions and significantly reduces cart abandonment rates.


Core Technical Expertise & Supported Providers:

  • Card Payment Gateways: Stripe, PayPal, Authorize.Net, Braintree, Adyen, and Checkout.com.
  • Crypto Payment Processors: Coinbase Commerce, NOWPayments, BitPay, and custom Web3 wallet connectors.
  • Backend & Architecture: Custom API integration, webhook handling, asynchronous payment verification, multi-currency conversion, fraud prevention rules, and PCI-DSS compliance optimization.


Message me right now to discuss your custom payment infrastructure requirements.

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Get to know Emmy

Emmy

Secure Crypto Payment Integration You Can Trust

  • FromColombia
  • Member sinceOct 2026
  • Languages

    English
We specialize in payment system integration and merchant account setup for online businesses. Our team provides payment gateway configuration, API integration, custom checkout solutions, and transaction management tailored to your business needs. We help connect suitable payment providers to your website or eCommerce platform for smooth and reliable transactions. Our focus is on security, compliance, efficient processing, and professional technical support throughout setup, integration, and testing. Merchant account approval depends on the provider’s requirements.