Available for freelance & full-time roles
Sandeep Kumar.
Full stack & AI engineer. I build fast, accessible web apps with React and Next.js — and the Node.js APIs, LangChain agents, Docker services and AWS deploys behind them.
- TypeScript
- JavaScript
- React
- Next.js
- Node.js
- Express.js
- Tailwind CSS
- GSAP
- Lenis
- LangChain
- LangGraph
- MongoDB
- Redis
- Socket.IO
- Microservices
- REST APIs
- Google Auth
- AWS
- AWS ECR
- AWS ECS
- Docker
- Kubernetes
- Git
- GitHub
- CI/CD
- TypeScript
- JavaScript
- React
- Next.js
- Node.js
- Express.js
- Tailwind CSS
- GSAP
- Lenis
- LangChain
- LangGraph
- MongoDB
- Redis
- Socket.IO
- Microservices
- REST APIs
- Google Auth
- AWS
- AWS ECR
- AWS ECS
- Docker
- Kubernetes
- Git
- GitHub
- CI/CD
Capabilities
What I do
One engineer across the stack — the interface, the model behind it, the API, and the pipeline that puts it in front of users.
- 01
Frontend engineering
Production React and Next.js apps with typed, testable components and motion that never gets in the way.
- App Router & server components
- Design systems in Tailwind
- GSAP & Lenis motion work
- 02
Backend & APIs
Node.js and Express services with MongoDB, Redis and REST APIs — built for scale and real-time data.
- REST & microservices
- MongoDB & Redis
- Socket.IO live data
- 03
AI & LLM features
LangChain and LangGraph pipelines that add real search, retrieval and agent behaviour to a product.
- RAG & tool-calling agents
- Tavily & web search
- Prompt evaluation & guardrails
- 04
Cloud & delivery
Containerised deploys with Docker and Kubernetes, images pushed to ECR and released on ECS via CI/CD.
- Docker & Kubernetes
- AWS ECR / ECS releases
- GitHub Actions CI/CD
Portfolio
Featured project
AI powered coffee search — React and Tailwind on the surface, LangChain and LangGraph underneath.
Next step
Got something that needs building?
React rebuild, an AI feature, or a deploy pipeline that keeps breaking — send it over. You'll get a straight answer within a day.