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English
$
USD
I will debug and fix API and webhook issues in PHP
Patryk P
About this gig
Having trouble with a PHP API or webhook that should work but doesnt?
I help debug and fix existing API integrations, webhook handlers and backend flows in Core PHP.
I can help with:
- REST API errors (400, 401, 403, 404, 500)
- Webhooks not firing, failing or creating duplicate events
- cURL, JSON and request/response issues
- API authentication, tokens and headers
- Data mapping and database updates
- Cron jobs, retries, logging and background processing
- Data synchronization between systems
This Gig is focused on fixing existing integrations and clearly defined backend problems.
Basic covers one specific, reproducible issue. More complex cases involving multiple endpoints, services, databases or legacy code may require a higher package or custom offer.
Please send the error details, expected behaviour, relevant code and API documentation before ordering if the scope is unclear.
I work carefully, keep changes focused and explain what was fixed.
Get to know Patryk P
Patryk P
Logo Designer, Redesign, Vectorization, Brand Assets
- FromPoland
- Member sinceSep 2026
- Avg. response time1 hour
Languages
Polish, English
Hi! I'm Patryk, a backend developer focused on PHP, REST APIs, webhooks and system integrations. I help businesses debug broken integrations, fix API and webhook issues, improve data synchronization and solve backend problems in existing applications. I work mainly with Core PHP, MySQL, JSON, cURL, authentication, cron jobs and background processes. Whether you're dealing with API errors, failed webhooks, incorrect data mapping or an integration that simply stopped working, I focus on finding the cause and delivering a clean, reliable fix.
My Portfolio
FAQ
Can you work with an existing PHP application?
Yes. This Gig is specifically designed for debugging and fixing existing PHP applications, API integrations and webhook flows.
Do you work with Core PHP without a framework?
Yes. I primarily work with Core PHP and can debug or improve existing backend code without requiring Laravel, Symfony or another framework.
What API issues can you fix?
I can troubleshoot authentication errors, HTTP 4xx/5xx responses, cURL problems, invalid JSON, request/response handling, incorrect headers, tokens, data mapping and similar API issues.
Can you fix webhook problems?
Yes. I can debug missing webhooks, failed webhook processing, duplicate events, incorrect payload handling, database update issues and related backend logic.
What do you need from me before starting?
Please provide a clear description of the issue, expected and actual behaviour, relevant error messages, API documentation and the PHP code involved.
Can you work with APIs that require authentication?
Yes. I can work with API keys, bearer tokens, OAuth-based flows and other common authentication methods, provided the required access and documentation are available.
Which package should I choose?
Choose Basic for one small, clearly defined issue. Standard is suitable for a complete API or webhook flow. Premium is intended for more complex integrations involving multiple endpoints, database logic, synchronization or background processes.
What if I am not sure which package fits my problem?
Send me a message with the issue, relevant code and API documentation before ordering. I can review the scope and recommend the appropriate package or prepare a custom offer.
Can you work with MySQL and database updates?
Yes. I can troubleshoot API or webhook flows that read from, write to or synchronize data with MySQL databases.
Do you build complete API integrations from scratch?
This Gig is primarily focused on debugging and fixing existing integrations. For a new or larger integration, contact me first so I can review the requirements and provide a custom offer.
