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I will build salesforce, zoho, crm, API integration for stripe and backend bug fix


Kelvin J
About this gig
When a CRM integration stops working, the problem is not always obvious. An API may return an unexpected response, a webhook may stop triggering, records may fail to synchronize, or a Stripe payment event may never reach your backend.
This is where I can help.
I can help with:
- CRM API integration and troubleshooting
- Salesforce and Zoho CRM connections
- Stripe API and webhook issues
- REST API requests and responses
- Webhook configuration and event handling
- API authentication and authorization problems
- Data mapping and synchronization issues
- Backend integration bugs
- Third party API connections
- Failed requests, unexpected responses, and integration errors
Whether you need a small fix in an existing integration or help connecting your CRM, payment system, API, and backend together, I can work with your current setup and help you get it functioning properly.
Before placing an order, send me a brief explanation of the issue and, if available, the relevant error message or API documentation. I'll review the scope and let you know the best way to approach it.
Get to know Kelvin J
Kelvin J
API Integration and Automation Expert
- FromUnited Kingdom
- Member sinceMay 2026
- Avg. response time1 hour
Languages
Spanish, English
I’m a professional API Integration & Automation Developer specializing in REST API integration, payment gateway setup, Stripe integration, Shopify API, WhatsApp API, Twilio, ChatGPT API, and business workflow automation.
I build secure, scalable, and efficient API solutions using PHP, Node.js, Python, Laravel, JSON, XML, Postman, Zapier, Make, and n8n.
From custom API development to automation workflows, payment processing, AI integration, and third party integrations, I help businesses streamline operations and grow faster with reliable solutions.

