I will integrate or fix stripe, ach and card payments in your net or react app

B
badabinggg
B
badabinggg
Eddie W
integrate or fix stripe, ach and card payments in your net or react app
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integrate or fix stripe, ach and card payments in your net or react app

About this gig

I'm the technical owner of a production ACH and card payment gateway handling 10,000+ transactions a day, and I lead a 10-person engineering team. I rebuilt our payment portal to take processing from 24 hours to under 2 seconds and I run our PCI remediation. 11+ years of .NET and React.


Typical jobs:

  • Stripe checkout, subscriptions, webhooks and Connect
  • ACH and card gateway integrations (TSYS, Authorize.net, hosted payment pages)
  • Fixing failed, duplicate or stuck payments: idempotency, retries, webhook handling
  • Reconciliation and payment reporting that matches your books
  • Reducing PCI scope with hosted fields and tokenization
  • Legacy .NET Framework payment code moved to .NET Core
  • General .NET bugs and features: ASP.NET Core, Entity Framework, SQL Server, Azure

How it works: tell me your processor, your stack and what's going wrong or what you need built. I reproduce, fix or build it, and send back the change with a written explanation of what I did and why.


I work US Eastern evenings and weekends, so you'll usually have progress overnight.

  • Programming language

    • C#

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Testing procedures

  • Frontend framework

    • React.js
    • Blazor

  • Backend framework

    • Other

Get to know Eddie W

Eddie W

Payments engineer for Stripe ACH and card in dotnet and React

  • FromUnited States
  • Member sinceDec 2025
  • Avg. response time12 hours

  • Languages

    English
Payments engineer with 11+ years in .NET, C# and React. I'm the technical owner of a production ACH and card payment gateway processing 10,000+ transactions a day, and I lead a 10-person engineering team. I cut our payment processing time from 24 hours to under 2 seconds and run our PCI remediation. I integrate and fix Stripe, ACH and card gateways, clean up failed or duplicate payments, and harden AI-built apps (Lovable, Bolt, Replit) for production. Fixed prices, written summary with every delivery.

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