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I will build a mern stack web app with react next js and node js
Khizar
Level 2
2 orders in queue
5.0
5.0
Gig Summary
About this gig
I build fast, clean, production-ready full-stack web applications using the MERN stack React, Next.js, Node.js, Express, and MongoDB. From MVP to scalable platform, typical delivery is 3-7 days.
5+ years of full-stack development experience, 15+ projects delivered for startups and growing businesses.
What I'll build:
- - Full-stack web apps with React, Next.js, Node.js, Express & MongoDB
- - REST APIs & third-party integrations (Stripe, JWT, OAuth)
- - Bug fixing, code review & performance optimization
- - Deployment on Vercel, AWS, or your preferred host
- - Real post-delivery support I don't disappear after handoff
Also available on request: AI feature integration (OpenAI, Claude API, LangChain), PostgreSQL, Docker & CI/CD setup message me if your project needs this on top of your MERN/Next.js app.
Clean code, clear daily communication, and on-time delivery your project's success is my reputation.
Message me with your project details I typically respond within 1 hour.
Get to know Khizar
Khizar
MERN and AI Developer
Level 2
- FromPakistan
- Member sinceMar 2025
- Avg. response time1 hour
- Last delivery1 week
Languages
Urdu, Hindi, English
Hi, I'm Khizar, a Full-Stack MERN Developer & AI Specialist with 4+ years of experience in React.js, Next.js, Node.js, MongoDB, and AI-powered applications.
I specialize in building high-performance web apps and integrating AI solutions using LangChain, OpenAI API, LlamaIndex, and Vector Databases.
My Expertise:
✅ Full-Stack Web Development (React.js, Next.js, Node.js, Express.js, MongoDB)
✅ AI-Powered Apps & Chatbots (LangChain, FastAPI, OpenAI, RAG)
✅ API Integrations & Automation (REST, GraphQL, OpenAI API, Stripe)
✅ Performance Optimization & Debugging
My Portfolio
FAQ
Do you build both frontend and backend for a full stack web app?
Yes. As a full stack MERN and Next.js developer, I handle everything — React/Next.js frontend, Node.js/Express or FastAPI backend, and MongoDB or PostgreSQL database — so you get one complete, production-ready app
Can you fix or improve an existing Next.js or React project?
Absolutely. I regularly take over existing MERN stack and Next.js codebases to fix bugs, optimize performance, and add new features without breaking what's already working.
Can you add AI features like chatbots or automation to my web app?
Yes, I can integrate AI features like chatbots, smart search, or automation into your full-stack app using OpenAI or Claude API. For advanced multi-agent systems or complex AI workflows, check out my dedicated AI agent gig for a deeper build.
How fast can you deliver a full stack web app?
Most full stack projects (React/Next.js frontend + Node.js backend) are delivered in 3-7 days depending on scope. I'll give you an exact timeline after reviewing your requirements.
Can you integrate OpenAI or Claude API?
Absolutely. I specialize in AI integrations including OpenAI, Claude, and LangChain-based agents.
Do you sign NDAs?
Yes, I'm happy to sign an NDA before starting. Just send it over and I'll get it sorted quickly.
Do you build with Next.js or just React?
Yes, I use Next.js as my primary framework for most projects — including App Router, server-side rendering, and API routes on top of the MERN stack (MongoDB, Express, Node.js).
Reviews
21 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
A avelinoccus
United States
Ongoing collaborationProfessional, responsive, and easy to work with. The core Milestone 2 functionality was delivered successfully, and issues were addressed promptly. Recommended.
$200-$400
Price
7 days
Duration
Helpful?I 
ipromise2
United States
Ongoing collaborationagain phenomenal!! we have achieved so much on this milestone. very good progress. looking forward to the final phase. Great skillful developer.
$200-$400
Price
2 weeks
Duration
Helpful?A avelinoccus
United States
Ongoing collaborationEverything working!!!
$200-$400
Price
7 days
Duration
Helpful?I ipromise2
United States
Ongoing collaboration⭐⭐⭐⭐⭐ Outstanding Developer . Highly Recommended Working with Khizar has been an incredible experience. He took all of my ideas, concepts, and dreams for my website and turned them into a real, functioning platform. The project was highly customized and unique, requiring creative problem.solving and...
$200-$400
Price
4 days
Duration
K 
Seller's Response
Helpful?C 
chenai96
United Kingdom
Ongoing collaborationFantastic, couldn’t ask for a better developer,
$100-$200
Price
5 days
Duration
Helpful?
Reviews
21 reviews for this Gig
| (21) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
A avelinoccus
United States
Ongoing collaborationProfessional, responsive, and easy to work with. The core Milestone 2 functionality was delivered successfully, and issues were addressed promptly. Recommended.
$200-$400
Price
7 days
Duration
Helpful?I ipromise2
United States
Ongoing collaborationagain phenomenal!! we have achieved so much on this milestone. very good progress. looking forward to the final phase. Great skillful developer.
$200-$400
Price
2 weeks
Duration
Helpful?A avelinoccus
United States
Ongoing collaborationEverything working!!!
$200-$400
Price
7 days
Duration
Helpful?I ipromise2
United States
Ongoing collaboration⭐⭐⭐⭐⭐ Outstanding Developer . Highly Recommended Working with Khizar has been an incredible experience. He took all of my ideas, concepts, and dreams for my website and turned them into a real, functioning platform. The project was highly customized and unique, requiring creative problem.solving and...
$200-$400
Price
4 days
Duration
K Seller's Response
Helpful?C chenai96
United Kingdom
Ongoing collaborationFantastic, couldn’t ask for a better developer,
$100-$200
Price
5 days
Duration
Helpful?
