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I will build a full stack mern web app for your saas
AH Rahat
About this gig
Are you looking for a professional full stack web application built with modern technologies?
I will develop your complete web application using the MERN stack MongoDB, Express.js, React.js, Node.js along with TypeScript, Next.js, FastAPI, MySQL and PostgreSQL for businesses, SaaS platforms and startups.
WHY CHOOSE ME?
- Full stack MERN web app development
- TypeScript for clean and scalable code
- FastAPI Python backend integration
- MySQL and PostgreSQL database design
- Responsive React.js UI with smooth UX
- Secure REST API with JWT authentication
- Role-based access control and admin dashboard
- Live deployment on Vercel and Render
- Full source code and documentation included
WHAT I HAVE BUILT:
- EcoCycle: multi-role SaaS recycling platform with real-time dashboards and gamification
- Shilpohaat: AI-powered art marketplace with AR preview and product management
- Noded: mobile-first personal dashboard with FastAPI backend and encrypted vault
TECH STACK:
React.js · TypeScript · Node.js · Express.js · FastAPI · MongoDB · PostgreSQL · MySQL · REST API · JWT · Vercel · Render · Git
Message me before ordering so I can review your requirements and confirm the best solution for your project.
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 AH Rahat
AH Rahat
Full Stack AI Engineer ! LLM, Computer Vision ,Automation
- FromBangladesh
- Member sinceDec 2019
- Avg. response time1 hour
- Last delivery2 years
Languages
Bengali, English, Hindi, Chinese
Hey, I'm Rahat — a Full Stack AI Engineer and CSE undergraduate at BRAC University, Dhaka.
I build MERN stack apps, AI/ML systems, computer vision pipelines, NLP & LLM solutions, RAG architectures, and N8N automation workflows.
Here's what I work with:
⚙ Full Stack — React, TypeScript, Node.js, Express, MongoDB, FastAPI, PostgreSQL
🤖 AI / ML — PyTorch, TensorFlow, Scikit-learn, YOLOv11, EfficientNet-B3, OpenCV, HuggingFace Transformers
🧠 LLM & NLP — LangChain, RAG Pipelines, Prompt Engineering, Multi-Agent Orchestration, Bengali NLP
Let's build something great together.
My Portfolio
FAQ
What is MERN stack web development?
MERN stack is a full stack JavaScript framework using MongoDB, Express.js, React.js and Node.js to build fast, scalable and modern web applications for SaaS platforms, startups and businesses.
Can you build a custom web application from scratch?
es. I build fully custom MERN stack web applications from scratch including database design, REST API development, React frontend and live deployment on Vercel and Render.
Do you integrate AI features into MERN web apps?
Yes. I can integrate AI features including chatbots, image analysis, recommendation systems and LLM pipelines into any MERN stack web application as an additional service.
Will my web application be mobile responsive?
Yes. Every web application I build is fully responsive and optimized for mobile, tablet and desktop devices.
Do you provide source code after delivery?
Yes. Full clean source code with proper documentation is included in every package with no extra charge.
How do you handle revisions?
I offer revisions based on your package. I work closely with you throughout the project to make sure the final delivery matches your requirements exactly.
Can you work on my existing MERN project?
Yes. I can fix bugs, add new features, improve performance or rebuild parts of your existing MERN stack web application.
What makes you different from other MERN developers?
I combine full stack MERN development with AI engineering and five years of professional design experience — meaning your product works well, looks professional and can be extended with AI features when needed.
