I will fix or develop rest API, custom API integration


Level 2
Vetted by Fiverr Pro
Mostofa Tanim A was selected by the Fiverr Pro team for their expertise.
About this gig
Need help with API integration, REST API development, or fixing a broken API workflow?
I will integrate, troubleshoot, fix, or develop custom APIs for your website, web app, mobile app, SaaS platform, or backend system. Whether you need REST API, JSON, XML, SOAP API, Stripe API, or payment gateway integration, I can provide a secure and reliable solution based on your project requirements.
Services I offer:
- API integration
- Custom API development
- REST API integration
- JSON API and XML API handling
- SOAP API integration
- Third-party API connection
- Stripe API integration
- Payment gateway integration
- Webhook setup
- OAuth / JWT / Token authentication
- API bug fixing and debugging
- Request / response troubleshooting
- Postman API testing
- Backend API connection
- Data synchronization
- Custom business workflow automation
I can help you integrate APIs:
- Payment APIs
- Shipping APIs
- CRM / ERP APIs
- eCommerce APIs
- Supplier / inventory APIs
- Mobile app APIs
- SaaS platform APIs
- Webhook-based services
Why work with me
- Clean and maintainable code
- Secure implementation
- Fast communication
- Reliable debugging
- Scalable integration approach
- Professional delivery
Please contact me before placing an order
Get to know Mostofa Tanim A
Senior Software Engineer
Level 2
Mostofa Tanim A is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.
Vetted for
Website Maintenance
- FromBangladesh
- Member sinceJun 2017
- Avg. response time1 hour
- Last delivery3 weeks
Languages
English, Spanish
My Portfolio
FAQ
Do you work with third-party APIs?
Yes, I can integrate third-party APIs into websites, web apps, mobile apps, SaaS platforms, and custom backend systems.
Can you fix existing API issues or errors?
Yes, I can troubleshoot and fix authentication errors, broken endpoints, webhook failures, bad responses, and integration bugs.
Do you support REST, JSON, XML, and SOAP APIs?
Yes, I work with REST API, JSON API, XML API, and SOAP API integrations based on your project requirements.
Can you integrate Stripe or payment gateways?
Yes, I can integrate Stripe and other payment gateways for checkout, subscriptions, billing, and payment workflows.
Do you build custom APIs from scratch?
Yes, I can develop custom APIs and connect them with databases, frontend systems, mobile apps, or third-party services.
Should I contact you before ordering?
Yes, please message me first so I can review your project details and suggest the right package.

