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HappyRish01/README.md

Hi, I'm Rish πŸ‘‹

Backend & Systems Engineer | AI Software Engineer | Open Source Enthusiast

I'm a Computer Science undergraduate at Hansraj College, University of Delhi, interested in building high-performance backend systems, distributed infrastructure, low-latency applications, and developer tools.

Currently working as an AI Software Engineer at Fin-i, where I work on portfolio systems, trading infrastructure, data pipelines, and scalable backend services.

I enjoy working close to the system β€” concurrency, networking, databases, distributed systems, performance optimization, and infrastructure.


⚑ What I'm Working On

  • 🏎️ Low-Latency Systems β€” matching engines, trading systems & portfolio infrastructure
  • πŸ—„οΈ Database Internals β€” MVCC, WAL, B+ Trees & query optimization
  • 🌐 Distributed Systems β€” Kafka, Kubernetes, WebSockets & WebRTC
  • πŸ€– AI Infrastructure β€” RAG pipelines, vector search & AI-assisted applications
  • ☁️ Infrastructure & DevOps β€” Docker, Kubernetes, Jenkins & cloud deployments

πŸ›  Tech Stack

Languages

C++ Go Java JavaScript TypeScript Python

Backend & Databases

Node.js Bun PostgreSQL Redis

Systems & Infrastructure

Docker Kubernetes Kafka Jenkins AWS

Networking & Real-Time Systems

WebSockets WebRTC


πŸš€ Featured Work

⚑ Concurrency-Safe Limit Order Book & Matching Engine

A high-performance order matching engine designed around strict price-time priority.

  • 4.01M matched orders/sec
  • 249.6 ns/op single-core performance
  • O(1) best-price lookup using dual price ladders
  • Thread-safe engine operations with zero data races
  • Supports GTC, FAK, FOK, Good-for-Day and Market orders
  • Mutation-free Fill-Or-Kill prechecks

πŸ—„οΈ Distributed Storage Engine

Building a storage/database engine in Go featuring:

  • MVCC
  • Write-Ahead Logging
  • B+ Tree indexes
  • Cost-based query optimization

☁️ Vercel-Killer

A distributed deployment platform experimenting with:

  • Kafka-backed job queues
  • Containerized build workers
  • Kubernetes build swarms
  • Real-time build log streaming

🌐 WireG

Peer-to-peer file transfer system built around:

  • WebRTC
  • DTLS encryption
  • STUN
  • NAT traversal
  • Direct peer-to-peer communication

πŸ’Έ Foxtrot

AI-powered expense splitting infrastructure using:

  • Cloudflare Workers
  • Cloudflare D1
  • AI-based expense parsing
  • Atomic ledger operations

πŸ† Highlights

  • πŸ₯ˆ 2nd Place β€” Smart India Hackathon 2025 Internal Hackathon
  • Built a RAG system using LangChain for ARGO oceanographic data
  • Reduced analysis workflows from 7+ days to near real-time
  • Compressed 200+ GB of NetCDF data to ~700 MB of Parquet data
  • Development Head at the Department of Computer Science, Hansraj College
  • Evaluated 35+ hackathon teams across 8 states

πŸ’Ό Experience

AI Software Engineer β€” Fin-i

Working on high-performance portfolio and financial infrastructure.

  • Portfolio rebalancing systems
  • AI-assisted asset allocation
  • Low-latency backend services
  • PostgreSQL performance optimization
  • Data ingestion pipelines
  • Dockerized deployments
  • Trading and portfolio management infrastructure

🎯 Areas I'm Interested In

Distributed Systems
Database Internals
Low-Latency Engineering
Backend Architecture
Financial Systems
Networking
Concurrency
Cloud Infrastructure
Open Source

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