I Build Scalable
Web & AI Solutions
Fullstack Systems Engineer with production experience in React, Node.js & Python. I build robust web apps, scalable APIs, and integrate AI seamlessly to deliver real business impact.
Hackathon Wins
3+
Clients Served
Govt + Private
Freelance Clients
5+
Portfolio
Selected Work
OttiCamart.com
Full-Stack E-Commerce Platform
Production-grade full-stack e-commerce platform built as a freelance project. Features 12+ RESTful APIs, secure Razorpay payments, Redis caching, and an RBAC admin dashboard — deployed on AWS ECS.
GlobeTrotter
Smart Itinerary Planner
A comprehensive trip planning platform with 12 core features including itinerary builder, budget management, city/activity search, public trip sharing, and drag-and-drop reordering.
SHEILD AI
Secure Enterprise LLM Platform
HackCBS 8.0 Winner (1st place, MLH) — A secure LLM chat platform that masks PII before any AI call, enriches context via RAG over PDFs, and provides full audit trails with RBAC.
About Me
Building Digital Solutions
That Matter
Avnish Kumar
Fullstack Developer · B.Tech AI & DS
📍 New Delhi, India
0+
Freelance Clients
0+
APIs Built
0+
Govt. Projects
0+
Hackathon Wins
I'm a results-driven full-stack systems engineer experienced in building scalable platforms and intelligent AI solutions. I specialize in Next.js, Node.js, Python, and LLM integrations — delivering production-grade software that drives measurable business impact.
I've built secure multi-LLM SaaS platforms as a hackathon winner, engineered high-performance data visualization platforms for the Government of India handling 50M+ rows of data, and delivered e-commerce systems as a freelancer. I care deeply about system architecture, AI integration, and robust performance.
How I Work
Discovery
Understanding your goals, users, and technical requirements.
Design & Build
Clean architecture with modern tech stack for scalability.
Deploy & Optimize
CI/CD pipelines, performance tuning, and monitoring.
Launch & Support
Go-live support and ongoing maintenance as needed.
Skills & Expertise
Technologies I Work With
Applied AI & Agents
RAG, LLM orchestration, and observability
Adv. RAG
1+ yr
LangGraph
1+ yr
Agent SDKs
1+ yr
LLM Memory
1+ yr
Observability
1+ yr
AI & Backend Engineering
Scalable APIs, AI integrations & microservices
Node.js
3+ yrs
Python
2+ yrs
FastAPI
1+ yr
Express
3+ yrs
Golang
1+ yr
Frontend Development
Responsive, performant user interfaces
React
3+ yrs
Next.js
2+ yrs
TypeScript
2+ yrs
Tailwind CSS
2+ yrs
Databases & Cloud
Storage, caching, and infrastructure
PostgreSQL
2+ yrs
MongoDB
3+ yrs
Redis
1+ yr
AWS
1+ yr
Docker
1+ yr
Git
3+ yrs
Get in Touch
Let's Work Together
Have a project in mind? I'd love to hear about it. Send me a message and I'll get back to you within 24 hours.
Currently accepting new projects. Let's discuss how I can help bring your idea to life.
Trusted by — Built OttiCamart.com (production e-commerce), GIS apps for the Government of India. SIH 2024 Finalist & HackCBS Winner.