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I will integrate stripe paypal braintree and custom payment gateway API
Mel T.Wani
About this gig
Are you looking for a secure and reliable payment processor integration for your website, SaaS platform, mobile app, or e-commerce store?
I specialize in integrating modern payment gateways and building secure checkout workflows that help businesses accept payments smoothly and reliably.
I can integrate payment processors including:
- Stripe
- PayPal
- Braintree
- Authorize.Net
- Adyen
- Custom payment gateway APIs
- Other REST API-based payment processors
My services include:
- Payment gateway API integration
- One-time payment integration
- Subscription and recurring payments
- Secure checkout development
- Payment intent implementation
- Webhook integration
- Payment verification
- Refund functionality
- Multi-currency payments
- Customer and transaction management
- Error handling and failed payment recovery
- Custom backend payment logic
- API debugging and troubleshooting
A payment integration should do more than simply charge a card. It should handle confirmations, failures, refunds, webhooks, and edge cases properly.
Please contact me before placing an order so I can review your project requirements and recommend the best integration approach.
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Get to know Mel T.Wani
Mel T.Wani
PAYMENT GATEWAY ARCHITECT SECURE PROCESSOR AND CHECKOUT INTEGRATION
- FromPoland
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English, German, French, Italian, Greek
I have designed secure payment gateway and processor integrations that handle over $50 million in transactions. My focus is on developing robust checkout infrastructure for e-commerce brands, SaaS platforms, and high-volume merchants.
My expertise includes Stripe, PayPal, Authorize.Net, Braintree, Adyen, custom API integration, webhook handling, multi-currency checkout, fraud prevention, and PCI-DSS compliance optimization. I aim to eliminate failed transactions and reduce cart abandonment with high-quality payment architecture.
Please contact me to discuss your payment integration needs.
FAQ
Which payment gateways can you integrate?
I can integrate Stripe, PayPal, Braintree, Authorize.Net, Adyen, and many other payment processors that provide API documentation.
Can you integrate subscription payments?
Yes. I can implement subscription and recurring billing flows depending on the capabilities of your chosen payment provider.
Can you fix an existing payment integration?
Yes. I can troubleshoot issues such as failed payments, webhook errors, API authentication problems, incorrect payment status updates, and checkout flow issues.
Do you handle webhooks?
Yes. I can implement secure webhook handling for events such as successful payments, failed payments, refunds, subscription updates, and other transaction events.
Can you integrate more than one payment gateway?
Yes. Multi-gateway payment systems can be implemented depending on your application's architecture and requirements. Please contact me before ordering for a custom quote.
Will you deploy the payment integration?
Deployment support can be included depending on the package and project requirements. Contact me before ordering if production deployment is required.
Is my payment integration secure?
I follow the payment provider's recommended integration practices and focus on secure API communication, webhook verification, proper error handling, and minimizing unnecessary exposure of sensitive payment data.
