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Fiverr Pro
English
$
USD
I will build asp net core web API and third party API integrations
Salman
5.0
5.0
About this gig
Need a reliable backend API or need to connect your system to another service? I build and integrate REST APIs with ASP.NET Core, C#, SQL Server and Entity Framework Core.
With 14+ years in software development, I design APIs that are clean, secure and easy for your front end or partners to use.
What I can build:
- New ASP.NET Core Web APIs with CRUD, validation and authentication (JWT)
- Integrations with third-party APIs: payment gateways, email/SMS, CRMs, ERPs and other REST/JSON services
- Background jobs and data sync between systems
- Endpoints for Angular, React or mobile apps
- New endpoints or fixes in an existing .NET API
What you get:
- Clean, structured source code
- Swagger / OpenAPI documentation
- Error handling and logging
- Setup notes
Please message me before ordering with the API documentation of the service you want to integrate (if any) and the expected functionality, so I can confirm the right package or send a custom offer. Please never send live API keys or passwords in chat.
Get to know Salman
Salman
Senior DotNet Full Stack Developer, ASP NET Core, SQL Server, Angular
- FromPakistan
- Member sinceJan 2019
- Last delivery3 years
Languages
Urdu, English
Need a reliable senior developer to build, fix, or modernize a .NET application? I have nearly 16 years of experience with ASP.NET Core, C#, REST APIs, SQL Server and Entity Framework Core, plus Angular and React on the front end. I lead a remote team building enterprise apps for US clients and have migrated legacy desktop systems to modern web platforms. I build web apps, integrate APIs, optimize slow databases, fix difficult bugs and modernize legacy .NET code. Clean code, clear communication, software that works. Message me before ordering so we can agree on scope.
Other Software Development Services I Offer
FAQ
Do I need to provide API documentation?
Yes, if you want a third-party service integrated, please share its documentation link and a sandbox/test account if available. Live keys should be added by you in configuration, not sent in chat.
Will the API have documentation?
Yes. APIs I build include Swagger / OpenAPI documentation so your front-end developers or partners can test and use the endpoints easily.
Can you work on my existing codebase?
Yes. Share the code (GitHub, GitLab or Azure DevOps invite, or a zip file) and I will review it before confirming scope and timeline.
Will I receive the full source code?
Yes. You receive all source code written for your order, plus short setup notes. Code is delivered to your repository or as a zip file.
Can you deploy the API?
Yes. I can deploy or guide deployment to IIS, Azure or a Linux/Docker server. Hosting access should be given through a separate user account, never by sending passwords in chat.
What if my project is bigger than Premium?
Message me with the details. Larger projects are best handled with a custom offer split into milestones, so you pay and review in stages.
Reviews
2 reviews for this Gig
| (2) | ||
| (0) | ||
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Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
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Most relevant
S 
shehrozkhan001
Pakistan
Ongoing collaborationIt was very easy to explain what I needed. He was quick and right on target with my expectation. Highly Recommended, Thanks
$50-$100
Price
Helpful?A 
alienproducer
Honduras
Incredible work! 100% recommended, I found what I was looking for! And very good person!
$200-$400
Price
Helpful?
Reviews
2 reviews for this Gig
| (2) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Recommend to a friend
- Service as described
Sort By
Most relevant
S shehrozkhan001
Pakistan
Ongoing collaborationIt was very easy to explain what I needed. He was quick and right on target with my expectation. Highly Recommended, Thanks
$50-$100
Price
Helpful?A alienproducer
Honduras
Incredible work! 100% recommended, I found what I was looking for! And very good person!
$200-$400
Price
Helpful?
