I will integrate stripe subscriptions and secure authentication into your app

E
engelcalderon
E
engelcalderon
Frederick C
integrate stripe subscriptions and secure authentication into your app
Full Screen
integrate stripe subscriptions and secure authentication into your app
Full Screen
integrate stripe subscriptions and secure authentication into your appintegrate stripe subscriptions and secure authentication into your app

About this gig

Are you a founder ready to launch your SaaS but stuck on the complex plumbing of payments and user authentication? Don't let bad security or broken webhooks ruin your launch.


As a Level 1 Seller and Software Engineer with over 7 years of industry experience, I build secure, robust, and production-ready payment systems that scale. I will handle the backend heavy lifting so you can focus entirely on your product and your marketing.


What I can build for you:

  • Secure Authentication: JWT, Firebase, Auth0, or NextAuth (Login, Signup, Social Auth).
  • Stripe Subscriptions: Monthly/yearly multi-tier pricing setups.
  • Stripe Webhooks: Flawless handling of successful payments, failed invoices, and cancellations.
  • Customer Billing Portal: Allow users to securely manage, upgrade, or cancel their plans.
  • Clean Code Architecture: Easy-to-maintain code delivered straight to your repository.


Lets stop wasting time troubleshooting API docs. Send me a message with your tech stack, and lets launch your SaaS billing securely this week!

  • Website type

    • Saas

  • Programming language

    • JavaScript
    • PHP
    • Python
    • TypeScript
    • Node.js

  • Website features

    • Payment
    • User Authentication
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Get to know Frederick C

Frederick C

Software Engineer 7 Yrs Exp SaaS and ECommerce Expert

4.9(16)
  • FromCosta Rica
  • Member sinceMay 2016
  • Last delivery5 years

  • Languages

    English, Spanish
I am a Software Engineer with 7+ years of professional experience delivering industry-standard web solutions. I specialize in building and scaling SaaS products, e-commerce platforms, optimized landing pages, and blogs. If you are looking for clean code, reliable architecture, and a seamless development process, you’re in the right place. Let's get to work!

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