I will fix rest API, webhook, stripe, paypal, and custom API integration issues


About this gig
Is your REST API, webhook, Stripe, PayPal, or custom API integration failing, returning errors, or not working as expected? I can help identify the root cause and deliver a reliable solution.
I specialize in fixing, debugging, and optimizing API integrations for businesses, startups, SaaS platforms, eCommerce stores, and custom web applications. From simple API errors to complex integration issues, I focus on building secure, scalable, and dependable solutions that keep your systems connected and your business running smoothly.
Services I provide:
- REST API Integration & Bug Fixes
- Custom API Integration
- Webhook Setup & Troubleshooting
- Stripe & PayPal API Integration
- Payment Gateway Integration
- Third-Party API Integration
- WordPress & WooCommerce API Fixes
- Shopify API Integration
- CRM API Integration
- OAuth Authentication
- JSON, SOAP & GraphQL APIs
- API Automation & Data Synchronization
- API Performance Optimization
If you need an experienced developer to fix an existing API integration or resolve a complex technical issue, contact me before ordering so we can discuss the best solution for your project.
Get to know Aldric E.
GoHighLevel Expert Website Funnels Automation A2P 10DLC Twilio SMS Compliance
- FromUnited Kingdom
- Member sinceDec 2025
- Avg. response time1 hour
Languages
English, German, French, Spanish
My Portfolio
FAQ
Can you fix an existing API integration?
Yes. I troubleshoot broken API integrations, webhook failures, authentication problems, payment gateway issues, timeout errors, invalid responses, and data synchronization problems.
Which APIs do you work with?
I work with REST APIs, SOAP APIs, GraphQL APIs, Stripe, PayPal, Shopify, WooCommerce, WordPress, HubSpot, Salesforce, OpenAI, Firebase, Supabase, and many custom APIs.
Can you fix webhook issues?
Absolutely. I can troubleshoot webhook delivery failures, event handling, signature verification, payload processing, and server response errors.
Do I need to provide API documentation?
If documentation is available, it helps speed up development. If not, I can often work with existing endpoints and project details.
Can you work with custom-built systems?
Yes. I regularly work with custom websites, SaaS platforms, admin dashboards, and business applications.
