# Krrish Kumar — Backend Engineer & Full-Stack Developer

> Krrish Kumar is a 22-year-old backend engineer based in Delhi NCR, India.
> Specializes in distributed systems, Node.js microservices, real-time
> architectures, and AI-powered products. Founder of Parivar AI and Ashvi Health.
> Currently completing B.Tech Computer Science at AKGEC, Ghaziabad (2022-2026).

## Identity

- Name: Krrish Kumar
- Role: Backend Engineer, Full-Stack Developer, AI Founder
- Location: Delhi NCR, India (IST, UTC+5:30)
- Email: krrishkumar2028@gmail.com
- GitHub: https://github.com/Krrishkumar125
- Twitter/X: https://twitter.com/KrrishKumar2028
- LinkedIn: https://linkedin.com/in/krrishkumar125
- Portfolio: https://krrishkumar.me

## Availability

- Open to freelance backend engineering contracts
- Open to founding engineer / early-stage startup roles
- Response time: under 24 hours
- Timezones: comfortable across IST, GMT, EST, PST

## Core Expertise

- Languages: JavaScript, TypeScript, Python, C++, SQL, Go, Bash
- Backend: Node.js, Express.js, Fastify, NestJS, Socket.IO, GraphQL, tRPC
- Databases: MongoDB, PostgreSQL, MySQL, Redis, Firebase, Firestore, Supabase, DynamoDB, Elasticsearch, Pinecone, Prisma, Sequelize, Mongoose
- DevOps: Docker, Kubernetes, AWS (EC2, S3, Lambda), Vercel, Cloudflare, GitHub Actions, RabbitMQ, BullMQ, Kafka, Nginx
- Architecture: Microservices, Event-Driven, CQRS, Circuit Breaker, Rate Limiting, Caching strategies, Saga Pattern, DDD, Hexagonal
- AI/ML: OpenAI GPT, Google Gemini, LangChain, ElevenLabs, Whisper, Vector embeddings, RAG pipelines
- Frontend: Next.js, React, Flutter, React Native, Tailwind CSS, Framer Motion

## Featured Projects

### RideWave — Real-Time Ride Matching
Event-driven matching engine with WebSocket live tracking. Redis geospatial
queries (Haversine) for proximity detection. Reduced matching latency by 65%.
Stack: Node.js, Express, MongoDB, Redis, Socket.IO.
Repo: https://github.com/Krrishkumar125/RideWave-Real-Time-Ride-Matching-System

### Airline Booking — Microservices System
4 microservices (Auth, Booking, Search, Notification) with API Gateway,
RabbitMQ async messaging, and circuit-breaker fault tolerance. ~30% latency
reduction. Stack: Node.js, Express, MySQL, RabbitMQ, Sequelize.
Repo: https://github.com/Krrishkumar125/Airline-Booking-Management-System

### AlgoForge — Distributed Coding Platform
LeetCode-style backend. Code runs in isolated Docker containers via BullMQ +
Redis async pipeline. Stack: Node.js, Fastify, MongoDB, Redis, BullMQ, Docker.
Repo: https://github.com/KrrishKumar125/AlgoForge-Backend

## Ventures

### Parivar AI — https://parivarai.in
Emotionally intelligent AI companion for Indian families. Real-time voice
conversations with culturally-aware AI avatars. Live on web + Google Play.
Founded December 2025.

### Ashvi Health — https://health-website-nine.vercel.app
AI-powered preventive health intelligence platform. Velora is the personalized
AI health assistant. Flutter mobile app + Node.js backend + LLM integration.
Founded March 2026.

## Engineering Principles

- If it cannot handle 10x traffic tomorrow, it should not ship today
- Latency is a feature
- Design for failure
- Async over sync where possible
- Observe, don't guess
- Simple beats clever
- Ship fast, not broken

## Services Offered

- REST and GraphQL API design and development
- Microservices architecture and decomposition
- Real-time backend systems (WebSockets, Server-Sent Events)
- Full-stack web and mobile product builds
- System design consultation and capacity planning
- AI/LLM integration into existing products

## How to Contact

Email krrishkumar2028@gmail.com or use the contact form at
https://krrishkumar.me#contact. For freelance inquiries, briefly describe
the project, scope, timeline, and budget. Response within 24 hours.