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English
$
USD
I will build asp net core web API and dotnet full stack web app
Hanif
5.0
5.0
Gig Summary
About this gig
Need a secure, scalable ASP.NET Core Web API or full stack .NET app?
I'm a senior .NET engineer with 5+ years building production systems at Chaldal (YC W15), where my APIs serve 100k+ customers. Everything I ship is secure, scalable and easy to maintain.
What I build:
- REST APIs with JWT auth, roles, validation and Swagger docs
- Full stack apps with React or Next.js on a .NET backend
- Admin panels, dashboards, portals and SaaS products
- Integrations: Stripe, PayPal, Twilio, OpenAI and any REST API
- Bug fixes, refactoring, performance tuning and .NET upgrades
My expertise:
ASP.NET Core | C# | F# | EF Core | SQL Server | PostgreSQL | Redis | Docker
Why work with me?
- Built xRetail, a multi-tenant POS SaaS used by 100+ shops
- Clean architecture, tests and CI/CD on every project
- You own 100% of the source code
How we work:
Share your idea > plan and fixed quote > weekly progress demos > launch and support after delivery.
Please message me before ordering so we can agree on scope, price and delivery time. I reply fast.
Get to know Hanif
Hanif
Software Engineer : FSharp, CSharp, Dot NET
- FromBangladesh
- Member sinceFeb 2019
- Avg. response time1 hour
- Last delivery8 months
Languages
Bengali, English
Senior Software Engineer with 5+ years of experience at a YC startup in Bangladesh, where I built scalable operational, logistics, and marketing platforms. I specialize in full-stack development, AI integration, and system optimization. I’ve mentored junior engineers and led cross-functional projects that drive business efficiency.
I’m passionate about clean architecture, performance tuning, and delivering results that exceed expectations.
My Portfolio
Other Software Development Services I Offer
FAQ
Which .NET versions do you use?
.NET 8/9/10 (ASP.NET Core). I can also upgrade older .NET Framework projects.
Do I get the source code?
Yes, full source code and a README to run it.
Can you deploy it?
Yes: Docker, Azure App Service, AWS or a VPS (Premium, or as an extra).
Can you work on my existing project?
Yes. Send me the repo and I'll quote after a quick review.
Reviews
63 reviews for this Gig
| (63) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S 
scottgifford
United States
Great job. Done quick. Efficient. Will use again. Highly recommend. Thank you.
$200-$400
Price
2 weeks
Duration
Helpful?P perryneal11
United States
Great work!
$100-$200
Price
1 day
Duration
Helpful?B ben_paylinks
Canada
Great job, I will use services again.
$200-$400
Price
3 weeks
Duration
H 
Seller's Response
Helpful?N nspcouple
United States
Hanif was a great help and resource will hire again. Thank you for your help!
$50-$100
Price
7 days
Duration
H Seller's Response
Helpful?C carlosthecan
United States
Hanif updated the payment method so that if the order is $0, no credit card entry is required. Job was well done!
$50-$100
Price
2 days
Duration
Helpful?
Reviews
63 reviews for this Gig
| (63) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S scottgifford
United States
Great job. Done quick. Efficient. Will use again. Highly recommend. Thank you.
$200-$400
Price
2 weeks
Duration
Helpful?P perryneal11
United States
Great work!
$100-$200
Price
1 day
Duration
Helpful?B ben_paylinks
Canada
Great job, I will use services again.
$200-$400
Price
3 weeks
Duration
H Seller's Response
Helpful?N nspcouple
United States
Hanif was a great help and resource will hire again. Thank you for your help!
$50-$100
Price
7 days
Duration
H Seller's Response
Helpful?C carlosthecan
United States
Hanif updated the payment method so that if the order is $0, no credit card entry is required. Job was well done!
$50-$100
Price
2 days
Duration
Helpful?
