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I will debug and fix nodejs API errors and backend issues
HEIEV
About this gig
Is your API failing, your backend throwing errors, or an integration not working as expected?
I help developers and businesses find the cause and fix Node.js API and backend problems instead of simply adding more code.
I can help with:
- REST API errors and failed requests
- Node.js and Express.js backend bugs
- Third-party API integration issues
- Webhook errors and failed callbacks
- Authentication and API key problems
- CORS and request/response errors
- Stripe and payment integration issues
- Database-related backend errors
- Unexpected server errors and timeouts
My approach is simple: understand the problem, identify the root cause, fix it, and test the solution.
Whether you're dealing with one frustrating API error or several connected backend issues, send me the error details and I'll help you get your application working properly.
Having a backend problem? Let's fix it.
Get to know HEIEV
HEIEV
Nodejs Backend Developer, API and Backend Problem Solver
- FromUnited States
- Member sinceJun 2026
- Avg. response time2 hours
Languages
English, Spanish, German
Hi, I’m Heiev. I help businesses and developers solve backend problems that stop their applications from working properly. I troubleshoot and fix API errors, failed integrations, broken webhooks, Stripe/payment issues, Node.js backend bugs, and other server-side problems. Instead of just adding more code, I focus on finding the actual cause of the problem and fixing it properly. If your API is failing, an integration isn’t working, or your backend is giving unexpected errors, send me the details and I’ll help you find a practical solution.
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FAQ
What types of API or backend problems can you fix?
I can troubleshoot REST API errors, Node.js/Express bugs, failed API requests, authentication issues, CORS errors, webhooks, third-party API integrations, Stripe/payment issues, and backend errors.
Can you troubleshoot my existing code instead of rebuilding it?
Yes. I focus on finding the root cause of existing API and backend problems and fixing the issue without unnecessary rebuilding.
What do you need from me to start?
Please provide the error details, relevant code or project files, API documentation if applicable, and clear information about what is not working.
Can you fix third-party API and webhook errors?
Yes. I can investigate failed requests, incorrect responses, authentication problems, webhook failures, payload issues, and other integration errors.
Will you test the fix after making the changes?
Yes. I test the affected functionality after fixing the issue to make sure the solution works as expected.
