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harshgupta751/README.md

LinkedIn Portfolio LeetCode Gmail


πŸš€ About Me

I'm a Full-Stack Developer who loves architecting production-grade systems β€” from microservices and event-driven pipelines to real-time WebSocket applications and AI-powered platforms. I care deeply about system design, scalability, and clean backend patterns that hold up under real-world load.

Currently pursuing B.Tech in Computer Science at KIET Group of Institutions (2024–2028), and already shipping production-ready applications with measurable impact. AWS Certified Cloud Practitioner β€” I build on the cloud, not just for the cloud.

"Don't just write code. Architect systems."


πŸ› οΈ Tech Stack

Languages

JavaScript TypeScript Golang C++ C

Backend & Infrastructure

Node.js Express.js Redis RabbitMQ Kafka Socket.io BullMQ Prisma JWT

Frontend

React Next.js Tailwind CSS Zustand Framer Motion React Query

Databases

MongoDB PostgreSQL

Cloud, DevOps & Tools

AWS Docker Nginx GitHub Actions Git Postman

AI / Gen AI

LangChain Vector DB RAG Β· Agentic AI Β· Generative AI Β· GuardRails


πŸ—οΈ Featured Projects

A fully production-grade, 7-service microservices e-commerce platform demonstrating every key backend architecture pattern used in real-world systems.

Tech Stack Node.js Β· TypeScript Β· Next.js Β· Redis Β· RabbitMQ Β· Docker Β· AWS Β· Stripe
Key Highlights Custom API Gateway with JWT auth & rate limiting Β· Redis cache-aside cutting DB load by ~60% Β· RabbitMQ event-driven order pipeline boosting throughput by ~45% Β· Stripe + Opossum circuit breaker reducing payment failures by ~35% Β· Full AWS deployment (EC2, RDS, ElastiCache, ALB, S3) with GitHub Actions CI/CD
Live Demo nexcart-production-microservices-e.vercel.app

A production-grade full-stack SaaS platform bridging the gap between students grinding LeetCode and teachers tracking outcomes β€” in real time, powered by Gemini AI.

Tech Stack React Β· Node.js Β· MongoDB Β· Gemini 2.5 Flash Β· Zustand Β· Recharts Β· Framer Motion
Key Highlights LeetCode auto-sync via parallel GraphQL queries Β· 3-model Gemini fallback chain with 8h signature-keyed cache, cutting AI API calls by ~70% Β· Teacher analytics with topic heatmaps & Gallant/Average/Gradual student categorisation Β· LeetCode-verified problem completion for 100% data integrity
Live Demo solve-tracker.netlify.app

A WebSocket chat application engineered for horizontal scaling β€” Redis Pub/Sub fan-out, persistent message history via Redis Streams, and zero sticky-session architecture.

Tech Stack Node.js Β· React Β· Redis Pub/Sub Β· WebSocket Β· Docker Β· Nginx Β· Framer Motion
Key Highlights N-replica scaling behind Nginx with no sticky sessions Β· Redis Streams message persistence (500-msg cap) Β· Token-bucket rate limiting (60 msg/min) Β· Exponential back-off reconnect with Β±20% jitter Β· ~99% message delivery reliability under network churn
Live Demo chatroomchat.netlify.app

πŸ’Ό Experience

Dec 2025 – Apr 2026 β”‚ Next.js Developer Intern @ CodeHurdle
                    β”‚ ↳ Built high-performance UI components with Next.js & TypeScript
                    β”‚ ↳ Improved page-load responsiveness by ~30%; cut redundant API calls by ~40%
                    β”‚ ↳ Shipped real-time Virtual Coding Contest feature (WebSockets, 100+ concurrent users)
                    β”‚ ↳ Reduced Time-to-Interactive by ~25% via React Query optimisation

πŸŽ“ Education

πŸ›οΈ B.Tech β€” Computer Science Engineering KIET Group of Institutions, Ghaziabad Β· GPA: 8.22 / 10 Β· 2024 – 2028


πŸ† Achievements & Leadership

πŸ₯‰ 3rd Runner-Up β€” AI Arena Hackathon Competed among top college teams across India
πŸ… Top 16 Nationwide β€” K3PC ICPC-Level Contest Ranked in the top 16 teams nationally
πŸ’» 600+ DSA & CP Problems Solved across LeetCode, Codeforces, and CodeChef
πŸ‘¨β€πŸ’Ό Project Lead β€” CPBYTE Conducted coding sessions & mentored 50+ developers

πŸ“œ Certifications

  • πŸ… AWS Certified Cloud Practitioner β€” Core AWS services, cloud fundamentals, and security best practices

πŸ“Š GitHub Stats

GitHub Streak


πŸ“¬ Let's Connect

I'm always open to interesting conversations, collaboration on open-source projects, or just a good chat about backend architecture and system design.

LinkedIn Email Portfolio


Pinned Loading

  1. Nexcart-Production-Microservices-E-Commerce Nexcart-Production-Microservices-E-Commerce Public

    TypeScript

  2. SolveTracker SolveTracker Public

    SolveTracker is a production-grade, full-stack AI learning system that bridges the gap between students grinding LeetCode and teachers tracking outcomes β€” in real time.

    JavaScript

  3. Chat-App Chat-App Public

    ChatRoom- WebSocket Powered real-time chat web application

    JavaScript 1

  4. Golang Golang Public

    Go 1

  5. Testing Testing Public

    TypeScript

  6. Producer-consumer-architecture-using-Redis Producer-consumer-architecture-using-Redis Public

    TypeScript