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Fiverr Pro
English
$
USD
I will do stripe, paypal, or any payment gateway integration in your app
Alex T.
Vetted by Fiverr Pro
Alex T. was selected by the Fiverr Pro team for their expertise.
About this gig
Need to integrate a payment gateway into your web app, SaaS, or AI-built application?
I'm a full-stack developer specializing in payment APIs and backend integrations. I can integrate, configure, or fix virtually any payment gateway with a compatible API.
PROVIDERS INCLUDE: Stripe, PayPal, Square, Braintree, Authorize.net, Razorpay, Paystack, Flutterwave, Mercado Pago, Mollie, Adyen, Worldpay, 2Checkout, Paymob, Klarna, Afterpay, Affirm, and many more. I can also implement supported methods like Apple Pay and Google Pay.
WHAT I CAN HELP WITH:
- One-time payments and recurring subscriptions
- Payment APIs, webhooks, and transaction handling
- SaaS billing and subscription management
- Database updates and post-payment logic
- Payment bugs, failed transactions, and fixes
- Custom payment flows and multiple gateways
I work with existing Next.js, React, Node.js, Supabase, and AI-built apps made with Lovable, Bolt, Cursor, and similar tools.
Don't see your provider listed? Message me with its name and your requirements. I'll check API compatibility and define the integration scope before you order.
Get to know Alex T.
Alex T.
Full Stack AI Developer, AI Agents, Apps, Integrations
Alex T. is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.
Vetted for
Website Maintenance
- FromItaly
- Member sinceMay 2021
- Avg. response time1 hour
- Last delivery1 year
Languages
English, Italian, Romanian
I am Alex, a freelance software engineer based in Turin, Italy, with a computer science degree and six years of client work.
Shopify is where most of my 88 five-star reviews come from: custom code and sections, theme and app fixes, Remix apps, and hand-coded storefronts. I also build full web platforms end to end — Next.js, React, TypeScript, Python, Supabase — and AI systems on top of them, from small n8n automations to document analysis and reporting platforms.
Tell me what you are trying to build and I will tell you honestly whether I am the right person for it.
Among my clients
Aina Kari
Vitamina Lab
Lvnea Perfume
Medusa Jewelry
My Portfolio
FAQ
Which payment gateways can you integrate?
I can work with virtually any payment gateway that provides a compatible API, including Stripe, PayPal, Square, Razorpay, Authorize.net, Paystack, Flutterwave, Adyen, and many others. Contact me with your provider to confirm compatibility.
Can you integrate payments into AI-built apps?
Yes. I work with existing web applications built using Lovable, Bolt, Cursor, and similar AI development tools, provided the application code and required backend functionality are accessible.
Can you integrate recurring payments and subscriptions?
Yes. I can implement recurring billing, subscription plans, customer portals, subscription status synchronization, and related backend logic within the agreed scope.
Do you handle payment webhooks and backend integration?
Yes. I can implement payment APIs, webhook verification, database updates, transaction status handling, and post-payment actions as required by your application.
Can you fix an existing payment gateway integration?
Yes. I can investigate and fix checkout failures, webhook issues, transaction status errors, configuration problems, and other payment integration bugs. The Basic package covers one clearly defined issue.
Will you deploy the integration to my live application?
Yes, deployment is included when your existing infrastructure, project configuration, and available access make it possible. Provider account approval and new infrastructure development are not included by default.
Can you integrate multiple payment gateways or Stripe Connect?
Yes. Multiple gateways and advanced payment flows can be implemented within an agreed scope. Complex Stripe Connect marketplaces, payouts, or multi-vendor systems may require a custom offer.
Should I contact you before placing an order?
I strongly recommend contacting me first. Payment integrations vary in complexity, so reviewing your existing application and requirements helps us choose the right package and avoid unexpected scope changes.
