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Fiverr Pro
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$
USD
I will integrate any third party api into your asp net core application
Muhammad Shahid
Level 2
About this gig
Need to connect your application to a third-party service a payment gateway, CRM, shipping provider, or any external API? I'm a Software Engineer with 5+ years of experience integrating and building REST APIs in ASP.NET Core and C#.
I connect your existing system to external services, build custom APIs for your own application, and handle authentication, data mapping, and error handling so the integration works reliably not just once, but in production. My recent work includes integrating internal systems and third-party services into a SaaS-based business platform, including API-based data exchange between modules.
What I offer:
- Third-party API integration (payment gateways, CRMs, shipping, and more)
- Custom REST API development in ASP.NET Core
- Authentication handling (OAuth, API keys, tokens)
- Data mapping and error handling
- Clean documentation of the integration
Message me with the API you need integrated, or order directly if you're ready to start.
Get to know Muhammad Shahid
Muhammad Shahid
Quality is Priority
Level 2
- FromPakistan
- Member sinceSep 2020
- Avg. response time1 hour
- Last delivery6 months
Languages
Urdu, English
Hi, I'm Muhammad Shahid, a Software Engineer with 5+ years of experience building and scaling web applications, APIs, and custom software solutions using C#, .NET/ASP.NET Core, and SQL Server. I also build cross-platform mobile apps (Android & iOS) with Flutter/Dart, and offer Shopify store customization and WordPress development.
I've delivered solutions for 100+ clients across different industries, and I focus on writing clean, reliable code with minimal back-and-forth. Let's discuss your project and I'll help you find the right solution — fast.
Among my clients
Sportfishhub
My Sharing System
My Portfolio
Other Software Development Services I Offer
FAQ
What kind of APIs can you integrate?
Payment gateways, CRMs, shipping providers, and most REST-based third-party APIs.
Can you build a custom API for my application?
Yes, custom REST API development in ASP.NET Core is part of my Premium package.
Do you handle authentication (OAuth, API keys)?
Yes, authentication setup is included across all packages.
Will I get documentation of the integration?
Yes, especially with the Premium package — clear documentation of endpoints and data flow
Do you need access to my codebase?
Yes, I'll need access to the relevant project files or repository to integrate the API properly
Can you fix an existing but broken API integration?
Yes, I can debug and fix existing integrations, not just build new ones.
What if the API I need isn't listed here?
Message me the API name/documentation and I'll confirm feasibility before you order.
Do you support integrations beyond ASP.NET Core projects?
My core expertise is ASP.NET Core/C#, but message me your stack and I'll confirm if I can help.
Can I request ongoing support after integration?
Yes, I'm available for continued maintenance and additional integrations.
