Browse categories
Explore
Fiverr Pro
English
$
USD
I will build ai powered web app as full stack developer react and asp net core
Qalb Abbas
Level 2
2 orders in queue
4.9
4.9
What people loved about this freelancer
lewismartim
United States
Outstanding experience from start to finish. Qalb demonstrated strong technical expertise in ASP.NET Core, React, and MySQL. The project was delivered on time...
dreamerande
Singapore
Qalb was very professional in coding. It help me translate what I needed into real coding need. He have always keep me updated with the current work progress and will not hesitate to answer any of my questions.
dreamerande
Singapore
I have engaged Qalb multiple times to enhance the project he originally developed for me several years ago. He consistently keeps me updated on the progress,...
About this gig
Are you looking for a Full Stack Developer who builds AI powered web apps and SaaS platforms?
With 8 years of experience I specialize in building custom web applications using React, Next.js, ASP NET Core, C# and SQL Server. I also integrate AI features including ChatGPT and OpenAI API directly into your web platform.
What I Build For You
- AI powered web apps with ChatGPT and OpenAI API integration
- Full stack web apps with React and ASP NET Core backend
- SaaS MVP development for startups and founders
- Admin dashboards and internal business tools
- REST API development and third party integrations
- Excel to web app conversions
Tech Stack
Frontend: React.js, Next.js, Tailwind CSS
Backend: ASP NET Core, C#, Node.js
Database: SQL Server, MySQL
AI: OpenAI API, ChatGPT API
Why Clients Choose Me
- 4.9 star rating across 70 plus verified reviews
- Clean code with full documentation every time
- 1 hour response time guaranteed
- NDA signing available
- Source code 100% yours upon delivery
- References from satisfied clients available on request
Get to know Qalb Abbas
Qalb Abbas
Full Stack Developer, CTO
Level 2
- FromPakistan
- Member sinceJul 2017
- Avg. response time1 hour
- Last delivery1 month
Languages
English
Full Stack Developer with 9 years of experience building AI powered web apps, SaaS platforms and custom business solutions.
I specialize in React, Next.js, ASP NET Core, C# and SQL Server. I integrate ChatGPT and OpenAI API to help businesses build smarter web platforms.
From SaaS MVPs to enterprise dashboards, I deliver clean, scalable and production ready solutions.
4.9 star rating, 70 plus reviews. NDA available. Source code always yours.
Message me before placing an order to make sure your project is fully covered.
My Portfolio
Other Software Development Services I Offer
FAQ
Why do I need to contact with you before ordering your gig?
There are a lot of factors that need to know before starting your project. Before starting a project, I need to be sure that all the pieces are in place and that I can deliver what you need.
What's included in a revision?
The revision will be provided only for the ordered issue/bug and plug extension. You can't ask to fix another fixation or add-on in revision.
What do I need to take into consideration before starting the project?
We will need your requirement details and your complete cooperation in order for us to achieve the best possible results for you.
Can you sign an NDA to protect my business idea?
Yes, I'm happy to sign a mutual Non-Disclosure Agreement before we begin. Your business idea, code, and data remain completely confidential. Please share the NDA with me before the project starts so we can review and sign it together.
Can you integrate AI features like ChatGPT or OpenAI into my web application?
Absolutely. I have hands-on experience integrating the OpenAI API, ChatGPT API, and other LLM-based features directly into ASP.NET Core and React applications. This includes AI chat interfaces, content generation, intelligent search, document summarization, and custom AI-powered workflows.
What technologies do you specialize in?
My core stack is React.js / Next.js on the frontend, ASP.NET Core with C# on the backend, and SQL Server for the database layer. I also work with Entity Framework, REST APIs, JWT authentication, Tailwind CSS, and cloud deployment on Azure & AWS. For AI integrations, OpenAI
Do I own the source code after delivery?
Yes — 100%. Once the project is delivered and payment is complete, you have full ownership of all source code, files, and assets. You can host it anywhere, modify it freely, or hire any developer to maintain it in the future. I don't keep any licensing claims on your code.
Do you offer post-launch support or ongoing maintenance?
Yes. After delivery, I offer ongoing maintenance and support through a separate project or monthly retainer arrangement. This can include bug fixes, feature updates, security patches, server monitoring, or AI model updates.
Can you provide references from previous clients?
Yes — you're welcome to request references from satisfied clients who have given permission to be contacted. You can also read 70+ verified reviews directly on my profile, which reflect real project outcomes across industries.
Reviews
70 reviews for this Gig
| (69) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
L lewismartim
United States
Outstanding experience from start to finish. Qalb demonstrated strong technical expertise in ASP.NET Core, React, and MySQL. The project was delivered on time with clean architecture and proper documentation. Qalb was very responsive, professional, and open to feedback during development. I would absolutely...
$200-$400
Price
13 days
Duration
Q 
Seller's Response
Helpful?D dreamerande
Repeat Client
Singapore
Qalb was very professional in coding. It help me translate what I needed into real coding need. He have always keep me updated with the current work progress and will not hesitate to answer any of my questions.
$200-$400
Price
4 days
Duration
Q Seller's Response
Helpful?D dreamerande
Repeat Client
Singapore
I have engaged Qalb multiple times to enhance the project he originally developed for me several years ago. He consistently keeps me updated on the progress, translates my ideas into practical solutions through coding, and arranges meetings to discuss how the project can be further improved. I am very...
$100-$200
Price
2 weeks
Duration
Q Seller's Response
Helpful?J jordinhman
United States
Qalb is proactive, patient friendly and is very experienced. He assisted me in selecting the right technologies and strategies for my project. I enjoy meeting with him and getting his input. I will be working with him more in the future!
$100-$200
Price
1 day
Duration
Q Seller's Response
Helpful?P pimentel98
Repeat Client
United States
Great experience working with this Qalb again. This is repeat work, and as always, the communication was smooth and the delivery was on time. The ASP.NET MVC admin panel was developed exactly as required, clean, functional, and easy to use. Very professional and reliable. Highly recommended. Looking forward to working together again.
$100-$200
Price
2 weeks
Duration
Helpful?
Reviews
70 reviews for this Gig
| (69) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
L lewismartim
United States
Outstanding experience from start to finish. Qalb demonstrated strong technical expertise in ASP.NET Core, React, and MySQL. The project was delivered on time with clean architecture and proper documentation. Qalb was very responsive, professional, and open to feedback during development. I would absolutely...
$200-$400
Price
13 days
Duration
Q Seller's Response
Helpful?D dreamerande
Repeat Client
Singapore
Qalb was very professional in coding. It help me translate what I needed into real coding need. He have always keep me updated with the current work progress and will not hesitate to answer any of my questions.
$200-$400
Price
4 days
Duration
Q Seller's Response
Helpful?D dreamerande
Repeat Client
Singapore
I have engaged Qalb multiple times to enhance the project he originally developed for me several years ago. He consistently keeps me updated on the progress, translates my ideas into practical solutions through coding, and arranges meetings to discuss how the project can be further improved. I am very...
$100-$200
Price
2 weeks
Duration
Q Seller's Response
Helpful?J jordinhman
United States
Qalb is proactive, patient friendly and is very experienced. He assisted me in selecting the right technologies and strategies for my project. I enjoy meeting with him and getting his input. I will be working with him more in the future!
$100-$200
Price
1 day
Duration
Q Seller's Response
Helpful?P pimentel98
Repeat Client
United States
Great experience working with this Qalb again. This is repeat work, and as always, the communication was smooth and the delivery was on time. The ASP.NET MVC admin panel was developed exactly as required, clean, functional, and easy to use. Very professional and reliable. Highly recommended. Looking forward to working together again.
$100-$200
Price
2 weeks
Duration
Helpful?
