Sanjay Kumar

Hi, I'm

Sanjay Kumar

Full Stack Developer

Building scalable web & mobile applications with Node.js, React, Next.js & AI integration. Passionate about clean architecture and real-time systems.

About Me

Full Stack Developer with 3+ years of experience building scalable web and mobile applications. I specialize in technologies like Node.js, React.js, Next.js, NestJS, Express.js, and MongoDB.

I've worked on diverse projects including social platforms, e-commerce systems, streaming apps, and AI-integrated applications. Experienced in building REST APIs, real-time systems (Socket.io, WebRTC), AI-powered features, and cloud deployments.

Based in Noida Sector 63, India, I focus on creating maintainable, efficient codebases and delivering exceptional user experiences.

Technical Skills

Backend

Node.jsNestJSExpress.jsSpring Boot

Frontend

React.jsNext.jsReact Native

Database

MongoDBPostgreSQLSQLRedis

DevOps & Cloud

DockerCI/CDAWSDigitalOceanNginxGit

Other

JavaScriptTypeScriptSocket.ioWebRTCREST APIsAI Integration

Experience

Full Stack Developer

Oct 2024 – Present

Infoicon Technologies

  • Developed scalable REST APIs using Node.js and NestJS
  • Built AI-powered backend workflows integrating OpenAI and Gemini models
  • Implemented chatbots, recommendation systems, and image analysis
  • Deployed services using Docker, Nginx, and cloud platforms

Node.js Developer

Mar 2023 – Oct 2024

Metaversity Technologies

  • Designed modular and decoupled application architecture for scalable web platforms
  • Developed backend services enabling seamless integration between multiple modules

Node.js Developer

Jan 2022 – Feb 2023

Kickr Technologies

  • Designed robust database schemas and scalable backend APIs for high-volume applications
  • Followed best practices for maintainable and efficient codebases

Projects

Maggibook

Visit →

Gaming platform with INR currency support, real-time conversion, and integrated chat system.

React.jsNode.jsExpress.jsSpring BootMongoDB

Meme Chat

Social video platform with one-to-one and group video calls using WebRTC and Socket.io. Includes follow/unfollow, chat messaging, and user blocking.

Node.jsExpress.jsMongoDBSocket.ioWebRTCReact Native

Apna Kisan App

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E-commerce mobile app with product catalog, WhatsApp notifications, wishlist system, and secure authentication.

React NativeNode.jsExpress.jsMongoDB

Hunnu Health App

AI-powered health tracking platform integrating Google Fit and Garmin. AI report analysis using OCR and vision models via Python FastAPI microservices.

Node.jsPythonFastAPINext.jsPostgreSQL

Education

B.Tech – Computer Science

AKTU

2022 – 2024

Diploma – Computer Science

CSM Government Polytechnic Ambedkar Nagar

2017 – 2020

Intermediate

M.G.S.I.C Dahlaupur, Ambedkar Nagar

2016 – 2017

Get In Touch

I'm open to new opportunities and collaborations. Feel free to reach out!

Noida Sector 63, India