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Fiverr Pro
English
$
USD
I will fix API integration errors bugs webhooks and backend issues
Brian T
About this gig
WELCOME TO MY GIG!!!
Is your API integration failing, webhook not triggering, backend returning errors, or your application not communicating properly with a third-party service? I will diagnose, debug, and fix API integration errors, REST API issues, webhook failures, authentication problems, and backend bugs in your web application or SaaS platform.
WHAT I CAN FIX:
- API integration errors
- REST API bugs and failed requests
- Third-party API integration issues
- Webhook failures and delivery problems
- Webhook data and synchronization issues
- CORS errors
- Authentication and authorization errors
- OAuth2 and JWT issues
- API key and token problems
WHY CHOOSE ME?
- Experienced full-stack developer
- API and SDK integration experience
- Clean and maintainable fixes
- Root-cause debugging
- Secure authentication handling
- REST API and webhook troubleshooting
- Backend and database debugging
Contact me today with your project details.
Get to know Brian T
Brian T
Full Stack Web Developer
- FromUnited Kingdom
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English
I’m a professional Full Stack Web Developer specializing in modern frontend and backend development, API integrations, SDK implementation, SaaS applications, and AI-powered web solutions. I build and integrate reliable, scalable web applications using technologies such as React, Next.js, Node.js, TypeScript, REST APIs, GraphQL, databases, and third-party APIs and SDKs.
Let’s turn your idea or technical requirement into a functional, scalable web solution.
Other Software Development Services I Offer
FAQ
Can you fix Stripe or payment API issues?
Yes. I can troubleshoot payment API integrations, Stripe API errors, checkout issues, subscription problems, and payment webhooks.
Can you fix authentication and OAuth issues?
Yes. I can troubleshoot API keys, Bearer tokens, JWT, OAuth2, authorization headers, expired tokens, and other API authentication problems.
Can you fix webhook problems?
Yes. I can troubleshoot webhooks that are not triggering, delivering incorrect data, returning errors, failing authentication, or not synchronizing information correctly.
What type of API problems can you fix?
I can troubleshoot REST API errors, third-party API integrations, failed requests, authentication problems, CORS errors, JSON issues, webhooks, API keys, backend communication problems, and HTTP errors.
