Browse categories
English
$
USD
Connect to your AI
I will integrate payment gateways apis and fix payment issues
M Abdullah
About this gig
Need help integrating a payment gateway or fixing a payment API issue?
I help troubleshoot payment integrations and connect payment services with existing applications.
What I can help with:
- Payment gateway and REST API integration
- Payment webhooks and callbacks
- Transaction success, failure, and status handling
- API authentication and error troubleshooting
- Payment-related database integration
- Testing and debugging existing integrations
What you can expect:
- Clear scope and deliverables
- Error handling and testing within the agreed scope
- Source code according to your selected package
- Clear communication throughout the project
I work with C#, ASP.NET Core, REST APIs, and Postman, along with supported third-party payment APIs. Through ZEENOVIX, I also contribute to practical software integration solutions.
Before ordering: Please share your payment provider, application technology, API documentation, and requirements. Ill review the task and confirm the appropriate package before work begins.
Larger or more complex integrations may require a custom offer.
Get to know M Abdullah
M Abdullah
Backend, API Integration and AI Automation Specialist
- FromPakistan
- Member sinceMay 2025
- Avg. response time1 hour
Languages
English, Urdu
Hi, I'm Abdullah, a Backend, API Integration & Automation Specialist. I help businesses build reliable backend systems, connect APIs and third-party services, integrate payment gateways, and automate workflows using n8n and Make.com.
My expertise includes:
• ASP.NET Core & C# Backend Development
• REST APIs, Webhooks & API Integrations
• Payment Gateway Integrations
• API Debugging & Postman Testing
• n8n & Make.com Automation
• AI-Powered Business Workflows
• Database & CRM Integrations
I focus on clean, secure, reliable solutions that solve real business problems.
My Portfolio
Other Software Development Services I Offer
FAQ
Do you accept smaller payment API tasks or bug fixes?
Yes. I accept small API fixes, payment issues, web hook problems, and minor integration tasks. You can choose the Basic package or message me if you need a custom offer.
What do you need from me to get started?
Please provide your requirements, API/payment gateway documentation, relevant source code, and test/sandbox credentials if required. Never send live payment credentials unless absolutely necessary.
Which payment gateways and APIs can you integrate?
I can work with payment gateways and third-party APIs based on their available documentation and API capabilities. Please message me with the gateway name and requirements before ordering so I can confirm compatibility.
Can you fix an existing payment integration?
Yes. I can troubleshoot existing payment integrations, API errors, web hooks, transaction issues, authentication problems, and payment flow errors, including code written by another developer.
Can you integrate the payment system with my database?
Yes. Database integration is included in the Standard and Premium packages and can also be added as an extra where applicable.
Do you provide support after the order is completed?
Yes. I provide 7 days of support for issues directly related to the delivered work. Any new features or additional requirements can be handled through a new order or custom offer.
