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Fiverr Pro
English
$
USD
I will fix payment integration webhook API bug and backend issues fast
Bryan A
About this gig
Is your payment integration failing, webhook not triggering, API returning errors, or your web app losing customers because of backend bugs?
I help businesses, startups, and entrepreneurs quickly fix payment integration, webhook, API, and backend issues that affect sales, user experience, and business operations.
Services offered
- Payment integration (Stripe, PayPal, Paystack, Flutterwave)
- Webhook setup and troubleshooting
- API integration and debugging
- Backend bug fixes
- Checkout and transaction error fixes
- Third-party API connections
- AI automation and workflow integration
- Web and mobile app development
Tech stack
Node.js, React, Next.js, Express, Python, Firebase, MongoDB, PostgreSQL, REST APIs, webhooks, and cloud services.
Why choose me
- Fast troubleshooting
- Clean, scalable code
- Secure integrations
- Reliable communication
- Business-focused solutions
- Thorough testing before delivery
I understand that broken payments and API issues can cost you revenue, so I focus on reliable fixes that last.
Please contact me before placing an order so I can review your requirements and recommend the best solution.
Get to know Bryan A
Bryan A
API Integration l Backend Development l Automation!
- FromUnited Kingdom
- Member sinceMay 2026
Languages
English, French, German, Spanish
Dealing with broken API integrations, failing Stripe payments, slow backends, or unreliable automations? I help startups and growing businesses fix and build scalable solutions using Python, FastAPI, REST APIs, webhooks, and tools like Stripe, Twilio, Shopify, and WhatsApp APIs. Expect clean, secure implementations, clear communication, and dependable support throughout delivery. Message me with your goal, current setup, and any errors or logs, and I’ll suggest the fastest path forward before you place an order.
Other Software Development Services I Offer
FAQ
Can you fix a payment integration that is not processing payments?
Yes. I troubleshoot and fix payment integration issues for Stripe, PayPal, Paystack, Flutterwave, and other payment gateways. I can resolve checkout failures, transaction errors, webhook problems, and API-related payment issues.
Can you fix webhook errors and failed events?
Absolutely. I can debug webhook failures, signature verification errors, missing webhook events, server-side issues, and third-party API communication problems to ensure your automation works reliably.
Can you work with my existing website or mobile app?
Yes. I can integrate APIs, fix backend bugs, resolve payment integration issues, improve existing code, and add new features without rebuilding your entire application.
What do you need before starting my project?
Please send your project details, API documentation, payment gateway information, webhook requirements, error messages, and access to the relevant codebase or platform. I will review everything before starting.
Do you provide scalable and secure solutions?
Yes. I write clean, maintainable, and secure code that is built for long-term scalability. Every payment integration, webhook setup, API connection, and bug fix is thoroughly tested before delivery.
