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Fiverr Pro
English
$
USD
I will integrate or fix stripe, paypal, and crypto payment gateways
Hasnain babar
Level 1
About this gig
Professional Payment Gateway Integration for Your Website or Web App
Need a secure and reliable payment system for your website or SaaS?
I will integrate modern payment gateways into your web application with a clean, scalable, and secure implementation.
Payment Gateways I Can Integrate
- Stripe
- PayPal
- Cryptocurrency Payments (NOWPayments, Coinbase Commerce, etc.)
- Razorpay
- Paystack
- Flutterwave
- Square
- Authorize.Net
- Mollie
- Wise API
- Custom payment APIs
What You'll Get
- Secure payment processing
- One-time payments
- Subscription & recurring billing
- Checkout page integration
- Webhook implementation
- Payment success & failure handling
- Refund functionality
- Invoice generation (if required)
- Test mode & live mode setup
- API documentation support
Technologies
- React.js
- Next.js
- Node.js
- Express.js
- JavaScript / TypeScript
- REST APIs
- MongoDB
- PostgreSQL
Perfect For
- SaaS Platforms
- E-commerce Stores
- Marketplaces
- Membership Websites
- Booking Systems
- Donation Platforms
- AI Applications
- Custom Web Applications
Why choose me?
- Clean and maintainable code
- Secure API implementation
- Fast communication
- On-time delivery
- Post-delivery support
Please contact me before placing an order so I can understand your project
Get to know Hasnain babar
Hasnain babar
FullStack Engineer
Level 1
- FromPakistan
- Member sinceJul 2024
- Avg. response time1 hour
- Last delivery1 month
Languages
Urdu, English
Hi, I'm Hasnain, a Full Stack Engineer specializing in building scalable web applications, AI solutions, and automations. I help startups and businesses turn their ideas into high-performing digital products from MVP to production.
I build fast, secure, and scalable applications with clean architecture and seamless user experiences. My expertise includes React, Next.js, Node.js, MongoDB, PostgreSQL, AWS, Vercel, AI Agents, n8n Automation, AI Chatbots, and API integrations.
I create production-ready solutions that combine with AI-powered automation to help businesses grow and work smarter.
My Portfolio
Other Software Development Services I Offer
FAQ
Which payment gateways can you integrate?
I can integrate Stripe, PayPal, NOWPayments, Coinbase Commerce, Razorpay, Square, Paystack, Flutterwave, Authorize.Net, and other payment gateways based on your project requirements.
What information do you need to get started?
I'll need access to your project (GitHub or source code), your payment gateway API credentials, and a brief explanation of how you want the payment flow to work.
Can you fix existing payment gateway issues or bugs?
Yes. I can troubleshoot and fix payment failures, webhook issues, checkout errors, subscription problems, API integration bugs, and other payment-related issues.
Which technologies do you work with?
I primarily work with React.js, Next.js, Node.js, Express.js, JavaScript, TypeScript, REST APIs, MongoDB, and PostgreSQL. I can also work with other modern web technologies.
Will you test the payment gateway before delivery?
Absolutely. I test the integration in sandbox/test mode and verify that payments, webhooks, and checkout flows work correctly before helping you switch to the live environment.
