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$
USD
I will be your full stack developer for custom website development and high perf apis
Shafiur Miju
Level 1
5.0
5.0
About this gig
Need a fast, secure API without hiring a full stack developer and a backend developer separately? As your full stack developer, I build high performance REST APIs plus, when you need it, full custom website development or a react website around them.
What I deliver:
- Backend developer work: high-performance REST APIs in .NET Core
- Full stack developer builds combining the API with a custom website or react website frontend
- JWT authentication, OAuth 2.0, Entity Framework
- Rate limiting and caching for speed
- Azure/AWS deployment and CI/CD
Perfect for: mobile apps needing a solid backend developer, and founders who want one full stack developer who can extend into a custom site later.
Note: hosting/cloud costs are billed separately by your provider.
Message me with your API requirements before ordering. Also check my other gigs for react and full stack website builds.
MY SETUP & AVAILABILITY:
- Modern High-Performance Device: Intel Core i5/i7 (11th Gen), SSD storage
- High-Speed Internet (100 Mbps): smooth calls and fast file delivery
- 24/7 Electricity: no power cuts, no downtime
- Active 24/7: I usually reply within 5 minutes
- No delays: youre never left waiting on updates
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Shafiur Miju
Shafiur Miju
DOT NET, Backend Engineer, Csharp, ASP NET Core APIs and Enterprise Architecture
Level 1
- FromBangladesh
- Member sinceJul 2026
- Avg. response time1 hour
- Last delivery2 weeks
Languages
Bengali, English
I build reliable backend systems for enterprise applications. I develop scalable backend architecture using C# and .NET, high-performance REST APIs with .NET Core, and robust ASP.NET applications. I focus on secure, maintainable systems with clean architecture, authentication, and performance that holds up under real-world load. You get well-structured code, documentation, and clear communication.
SETUP: Core i7 (11th Gen) | SSD | 100 Mbps | 24/7 Power | Active 24/7 | Replies in 5 min
My Portfolio
FAQ
Why use .NET Core for APIs?
.NET Core is extremely fast, cross-platform, and highly secure, making it ideal for enterprise-grade APIs.
Do you write unit tests?
I can write xUnit tests for the APIs. This is available as an extra service.
Can you deploy the API to Azure or AWS?
Yes, I can containerize the API with Docker and deploy it to Azure App Service or AWS EC2.
Can a full stack developer also build my custom website frontend?
Yes. I can build your custom React frontend and C#/.NET backend as a complete full-stack solution.
Reviews
5 reviews for this Gig
| (5) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
P patmatt
United States
Excellent work from Miju on our custom API integration. Clear communication, quick delivery, and exactly what we needed. Would definitely hire again!
$50
Price
3 days
Duration
S 
Seller's Response
Helpful?B 
bobbydanaya
United States
Miju did an amazing job. He successfully connected my existing web page to an ASP.NET portal API. Looking forward to working with him again in the future!
$50
Price
3 days
Duration
S Seller's Response
Helpful?I 
isafit
Canada
Ongoing collaborationNew pages are working really well, delivered on time. Solid work!
$100-$200
Price
5 days
Duration
S Seller's Response
Helpful?G 
grdmedina
United States
New pages and blog feature work perfectly, site feels fast too. Great job!
$200-$400
Price
1 day
Duration
S Seller's Response
Helpful?M michaelwpouncy
France
Miju delivered solid backend API work. Quick, professional, and easy to work with. Highly recommend!
$50
Price
2 days
Duration
S Seller's Response
Helpful?
Reviews
5 reviews for this Gig
| (5) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
P patmatt
United States
Excellent work from Miju on our custom API integration. Clear communication, quick delivery, and exactly what we needed. Would definitely hire again!
$50
Price
3 days
Duration
S Seller's Response
Helpful?B bobbydanaya
United States
Miju did an amazing job. He successfully connected my existing web page to an ASP.NET portal API. Looking forward to working with him again in the future!
$50
Price
3 days
Duration
S Seller's Response
Helpful?I isafit
Canada
Ongoing collaborationNew pages are working really well, delivered on time. Solid work!
$100-$200
Price
5 days
Duration
S Seller's Response
Helpful?G grdmedina
United States
New pages and blog feature work perfectly, site feels fast too. Great job!
$200-$400
Price
1 day
Duration
S Seller's Response
Helpful?M michaelwpouncy
France
Miju delivered solid backend API work. Quick, professional, and easy to work with. Highly recommend!
$50
Price
2 days
Duration
S Seller's Response
Helpful?
