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© 2026 Sayan Dey . All rights reserved.

Full-Stack Developer • AI & Systems

Sayan Dey
Building scalable systems & AI applications

I build real-world applications using MERN, Next.js, and modern AI tools — focusing on backend systems, agent-based workflows, and real-time features.

🚀 View Projects✍️ Read Blogs🤝 Connect With Me
Sayan Dey
🚀 View Projects✍️ Read Blogs🤝 Connect With Me

Proof of Work

Demonstrating practical experience in building scalable, intelligent and production-grade systems.

Full-Stack Systems

Building scalable applications using Next.js, Node.js and modern databases.

AI Engineering

Developing AI agents, LLM tools and intelligent automation systems.

Real-Time Applications

Experience with WebSockets, Redis and live communication systems.

DevOps & Infrastructure

Dockerized deployments, Linux environments and scalable backend setup.

Full-Stack Systems

Building scalable applications using Next.js, Node.js and modern databases.

AI Engineering

Developing AI agents, LLM tools and intelligent automation systems.

Real-Time Applications

Experience with WebSockets, Redis and live communication systems.

DevOps & Infrastructure

Dockerized deployments, Linux environments and scalable backend setup.



Tech Stack

Technologies and tools I use to design , build and scale modern applications.

Languages

JavaScriptTypeScriptPythonJavaC

Frontend

Next.jsReactTailwind CSSShadcn/UIHTMLCSS

Backend

Node.jsExpressMongoDBPostgreSQLRedisREST APIsJWT Auth

AI / ML

LangChainLangGraphRAGAI AgentsPrompt EngineeringGemini APIGroq APIOpenAI-style API Design

DevOps & Tools

DockerLinuxNginxGitVercel


Let’s Connect 👋

Whether you have an idea, an opportunity, or just want to network and chat — drop your email and let’s connect.

Featured Projects

Selected projects demonstrating real-world engineering and product development.

Wanderlust — Airbnb Clone
fullstackcompleted
Wanderlust — Airbnb Clone
A full-stack web application inspired by Airbnb where users can explore, create, and review travel listings.
nodejsexpressmongodbejsmongoose
GitHub
Personal Blog Platform (Demo)
fullstackcompleted
Personal Blog Platform (Demo)
Markdown-based blogging platform with admin moderation.
nodejsjwtmongodbmarkdown
GitHubLive Demo
Real-time Chat Application (Demo)
fullstackcompleted
Real-time Chat Application (Demo)
Scalable real-time chat system using WebSockets and Redis.
nextjssocketiotypescriptredis
GitHubLive Demo
Wanderlust — Airbnb Clone
fullstackcompleted
Wanderlust — Airbnb Clone
A full-stack web application inspired by Airbnb where users can explore, create, and review travel listings.
nodejsexpressmongodbejsmongoose
GitHub
Personal Blog Platform (Demo)
fullstackcompleted
Personal Blog Platform (Demo)
Markdown-based blogging platform with admin moderation.
nodejsjwtmongodbmarkdown
GitHubLive Demo
Real-time Chat Application (Demo)
fullstackcompleted
Real-time Chat Application (Demo)
Scalable real-time chat system using WebSockets and Redis.
nextjssocketiotypescriptredis
GitHubLive Demo
View All Projects


AI Lab

Experimental AI systems, intelligent agents and ongoing research explorations.

AI Code Review System (Demo)
experimentbuilding
AI Code Review System (Demo)
An AI-powered tool that reviews pull requests and provides feedback on code quality and security.
aicode-review
GitHubLive Demo
RAG Knowledge Base (Demo)
experimentidea
RAG Knowledge Base (Demo)
An AI system that answers questions using a custom knowledge base powered by RAG.
ragknowledge
GitHub
AI Tool Platform (Demo)
experimentbuilding
AI Tool Platform (Demo)
A unified AI platform combining chat assistants, image generation, and developer productivity tools.
aiplatform
GitHubLive Demo
AI Code Review System (Demo)
experimentbuilding
AI Code Review System (Demo)
An AI-powered tool that reviews pull requests and provides feedback on code quality and security.
aicode-review
GitHubLive Demo
RAG Knowledge Base (Demo)
experimentidea
RAG Knowledge Base (Demo)
An AI system that answers questions using a custom knowledge base powered by RAG.
ragknowledge
GitHub
AI Tool Platform (Demo)
experimentbuilding
AI Tool Platform (Demo)
A unified AI platform combining chat assistants, image generation, and developer productivity tools.
aiplatform
GitHubLive Demo
Explore AI Lab


Latest Blogs

Fresh posts about full-stack development, AI/ML experiments, and what I’m learning.

How to Build a Chat App with WebSockets (Demo)

Mar 14, 2026 • 1 min read

How to Build a Chat App with WebSockets (Demo)
Real-time messaging made easy using WebSockets, Node.js, and a simple frontend UI. Build your own chat app today!
Mastering Git and GitHub for Collaboration (Demo)

Mar 14, 2026 • 1 min read

Mastering Git and GitHub for Collaboration (Demo)
Learn how to use Git and GitHub to manage code versions, collaborate with teams, and contribute to open source.
Building a Personal Blog with Markdown and Next.js (Demo)

Mar 14, 2026 • 1 min read

Building a Personal Blog with Markdown and Next.js (Demo)
Create a fast and customizable personal blog using markdown files and Next.js file-based routing.
How to Build a Chat App with WebSockets (Demo)

Mar 14, 2026 • 1 min read

How to Build a Chat App with WebSockets (Demo)
Real-time messaging made easy using WebSockets, Node.js, and a simple frontend UI. Build your own chat app today!
Mastering Git and GitHub for Collaboration (Demo)

Mar 14, 2026 • 1 min read

Mastering Git and GitHub for Collaboration (Demo)
Learn how to use Git and GitHub to manage code versions, collaborate with teams, and contribute to open source.
Building a Personal Blog with Markdown and Next.js (Demo)

Mar 14, 2026 • 1 min read

Building a Personal Blog with Markdown and Next.js (Demo)
Read All Blogs


Create a fast and customizable personal blog using markdown files and Next.js file-based routing.