# Bhupesh Kumar — AI Agents Portfolio

> Machine-readable portfolio for AI agents and crawlers.
> Last updated: 2026-04-20

## Profile

- **Name:** Bhupesh Kumar
- **Role:** Backend Engineer @ dizzaract
- **Location:** India
- **Focus:** Scalable backends, distributed systems, payments, system design
- **Site:** https://bhupeshkumar.blog
- **Writing:** https://bhupeshkumar.blog/blog

## Summary

I care about two things: systems that scale with their users, and bills that don't.

Most of my day is spent reading traffic patterns, tuning services, and trimming away the parts of infrastructure that aren't earning their keep. I like the quiet work, the kind that shows up as a flat graph and a smaller invoice at the end of the month.

I architect backend systems that handle millions of requests: payment flows, real-time platforms, distributed queues. Before dizzaract I spent time across startups, hackathons, and open-source, wearing whichever hat the week asked for.

## Tech Stack

### Languages
- TypeScript
- JavaScript
- Go
- Python

### Backend
- Node.js
- Express
- Hono
- tRPC
- Bun
- Kotlin
- gRPC
- WebSockets
- WebRTC
- CF Workers

### Database
- PostgreSQL
- MongoDB
- Redis
- Prisma
- Drizzle

### DevOps
- AWS
- Cloudflare
- Docker
- Kubernetes
- Terraform
- Kafka
- Nginx
- Prometheus
- Grafana
- Git

## Projects

### Electron P2P remote code execution
- Description: Peer-to-peer app built with Electron + WebRTC for direct computer-to-computer communication. Remote JavaScript & Python execution, room-based connections. 21 stars on GitHub.
- Tags: Open Source · 21 ★
- Repo: https://github.com/Bhup-GitHUB/electron-p2p

### Vibe Coding Platform cloud workers
- Description: Worker service that programmatically scales AWS Auto Scaling Groups hosting ephemeral VS Code Web instances. On-demand dev environments with intelligent cost optimization.
- Tags: AWS · TypeScript
- Repo: https://github.com/Bhup-GitHUB/vibe-cod-arch

### ACM PR Bot AI code reviewer
- Description: GitHub Actions bot that automatically analyzes pull requests and provides detailed AI-generated feedback, quality checks, and actionable suggestions.
- Tags: GitHub Actions · Python
- Repo: https://github.com/ACM-Thapar/acm-pr-bot

### Trading Platform Backend
- Description: Hono.js backend on Cloudflare Workers with full KYC compliance, fraud detection, broker management, and real-time trading capabilities. Built for SEBI Hackathon.
- Tags: Cloudflare Workers · Hono
- Repo: https://github.com/Bhup-GitHUB/sebi-hackathon

### StartDB AI-powered database
- Description: Experimental DB engine that learns from usage patterns and optimises itself. SQL query engine with B-Tree indexing, written from scratch.
- Tags: Rust · Ongoing
- Repo: https://github.com/Bhup-GitHUB

## Experience

- **Dec 2025 to Present** — Backend & DevOps Lead · dizzaract, UAE Remote
- **Jun 2025 to Nov 2025** — Backend Engineer · Shedua, Remote
- **Feb 2025 to May 2025** — Backend Engineer · Flock Safety (YC), Remote

## Writing (42 posts)

- [Behind the Scenes: Building a Live Cricket Streaming Platform That Doesn't Crash at Toss Time](https://bhupeshkumar.blog/post/behind-the-scenes-building-a-live-cricket-streaming-platform-that-doesnt-crash-at-toss-time) — April 18, 2026 · 15 min read · Tags: System Design, Streaming, Go, AWS, Redis, PostgreSQL, Architecture
- [Bought My Small Home at 21](https://bhupeshkumar.blog/post/bought-my-small-home-at-21) — April 14, 2026 · 4 min read · Tags: Personal, Milestone, Life, Discipline
- [Fraud Detection Runs Inside the Payment, Not After It](https://bhupeshkumar.blog/post/fraud-detection-runs-inside-the-payment-not-after-it) — April 12, 2026 · 10 min read · Tags: FinTech, Fraud, Payments, Streaming, ML, System Design, Kafka
- [How Payment Reconciliation Systems Actually Work Behind the Scenes](https://bhupeshkumar.blog/post/how-payment-reconciliation-systems-work-behind-the-scenes) — April 10, 2026 · 9 min read · Tags: FinTech, Payments, Backend, Go, Reconciliation, System Design
- [College Placements Are Not a Safety Net](https://bhupeshkumar.blog/post/college-placements-are-not-a-safety-net) — April 8, 2026 · 6 min read · Tags: Career, College, Opinion, Growth, Layoffs, Skills
- [Why All UPI Apps Feel the Same Speed](https://bhupeshkumar.blog/post/why-all-upi-apps-feel-the-same-speed) — April 6, 2026 · 7 min read · Tags: UPI, FinTech, India, System Design, Payments, NPCI
- [Why Fintech Systems Don't Use Floating-Point Numbers for Money](https://bhupeshkumar.blog/post/why-fintech-systems-dont-use-floating-point-numbers-for-money) — April 5, 2026 · 6 min read · Tags: FinTech, Backend, System Design, Payments, Precision, Ledger
- [How BNPL Approves You in Seconds Using India's Financial Data Highway](https://bhupeshkumar.blog/post/how-bnpl-approves-you-in-seconds-india-financial-data-highway) — March 28, 2026 · 10 min read · Tags: FinTech, BNPL, System Design, Backend, India, Underwriting
- [Why Your Swiggy ETA Jumps Mid-Order — The 4 ML Models Behind "35 Min Delivery"](https://bhupeshkumar.blog/post/why-your-swiggy-eta-jumps-mid-order) — March 20, 2026 · 8 min read · Tags: System Design, Machine Learning, Backend, Swiggy, Zomato, Golang, ETA
- [How Blinkit, Zepto, Swiggy Instamart and BigBasket Deliver in 10 Minutes — and Why the Hard Part Has Nothing to Do with Speed](https://bhupeshkumar.blog/post/how-blinkit-zepto-swiggy-instamart-bigbasket-deliver-in-10-minutes) — March 20, 2026 · 8 min read · Tags: System Design, Backend, Quick Commerce, Redis, DynamoDB, ML, Golang
- [The Market Isn't Bad. You Just Stopped Evolving.](https://bhupeshkumar.blog/post/the-market-isnt-bad-you-just-stopped-evolving) — March 18, 2026 · 5 min read · Tags: Career, Opinion, AI, Internships, Growth
- [Your Delivery Rider's GPS Never Writes to a Database](https://bhupeshkumar.blog/post/delivery-rider-gps-never-writes-to-database) — March 14, 2026 · 7 min read · Tags: System Design, Backend, Real-Time, Redis, Kafka, Geolocation
- [I Fall Asleep in Seconds Now. Not Minutes — Seconds.](https://bhupeshkumar.blog/post/i-fall-asleep-in-seconds-now) — March 12, 2026 · 4 min read · Tags: Personal, Career, Startups, College, Reflection
- [Why OTPs Look the Same but Work Very Differently](https://bhupeshkumar.blog/post/why-otps-look-the-same-but-work-very-differently) — March 8, 2026 · 5 min read · Tags: Security, Authentication, Backend, System Design
- [How Bank Transfers Work](https://bhupeshkumar.blog/post/how-bank-transfers-work) — March 2, 2026 · 8 min read · Tags: System Design, Backend, Banking, Payments, Beginner
- [How UPI Payments Actually Work Under the Hood (A Beginner's Guide to System Design)](https://bhupeshkumar.blog/post/how-upi-payments-work-under-the-hood) — March 1, 2026 · 7 min read · Tags: System Design, Backend, UPI, Payments, Beginner
- [Why Your Payment Backend Needs a Dedicated Real-Time Layer (And How We Built One)](https://bhupeshkumar.blog/post/payment-backend-real-time-layer-propeller) — February 28, 2026 · 10 min read · Tags: Backend, System Design, WebSockets, gRPC, Redis, Real-Time, Payments
- [Anthropic Wants to Have Its Cake and Eat Yours Too](https://bhupeshkumar.blog/post/anthropic-hypocrisy) — February 24, 2026 · 5 min read · Tags: AI, Ethics, Anthropic, Opinion, Open Source
- [The "Girls Can't Tech" Myth Needs to Die](https://bhupeshkumar.blog/post/girls-cant-tech-myth) — February 21, 2026 · 5 min read · Tags: Opinion, Women in Tech, Culture, Diversity, Career
- [How Food Delivery Apps Show "PAID" Instantly on the Delivery Partner's Screen](https://bhupeshkumar.blog/post/how-food-delivery-apps-show-paid-instantly) — February 21, 2026 · 8 min read · Tags: Backend, Payments, WebSockets, System Design, Kafka, Redis, Real-Time
- [Louf for 2030](https://bhupeshkumar.blog/post/louf-for-2030) — February 14, 2026 · 5 min read · Tags: Life, Travel, Personal, Future, Reflection
- [Inside Payment Routing: How Razorpay Routes Your ₹100 Through 15+ Gateways in Milliseconds](https://bhupeshkumar.blog/post/inside-payment-routing-razorpay-gateways) — February 14, 2026 · 18 min read · Tags: Payments, Distributed Systems, Backend, Razorpay, Rust, System Design, Circuit Breakers, UPI
- [How Paytm and Google Pay Made QR Scanning Feel Instant](https://bhupeshkumar.blog/post/how-paytm-google-pay-qr-scanning-is-so-fast) — February 4, 2026 · 5 min read · Tags: Mobile, Computer Vision, Android, iOS, Payments, UPI, UX, Performance
- [Inside Moltbook: The First Social Network Where AI Agents Talk to Each Other](https://bhupeshkumar.blog/post/inside-moltbook-first-social-network-for-ai-agents) — February 1, 2026 · 12 min read · Tags: AI, Machine Learning, Social Networks, AI Agents, Experimental Tech, Multi-Agent Systems, AI Safety, Emergent Behavior
- [Why YouTube Uses Server-Sent Events (SSE) Over WebSockets: A Cost-Effective Architecture Decision](https://bhupeshkumar.blog/post/why-youtube-uses-sse-over-websockets-cost-effective-architecture) — January 29, 2026 · 18 min read · Tags: Architecture, Scalability, System Design, YouTube, Backend, SSE, WebSockets, Cost Optimization
- [Building Classio: A Serverless Deployment Platform](https://bhupeshkumar.blog/post/building-classio-serverless-deployment-platform) — January 28, 2026 · 12 min read · Tags: Backend, Serverless, Architecture, System Design, Bun, TypeScript
- [When Multiple Tech Stacks Actually Make Sense: Lessons from PhonePe and Super Apps](https://bhupeshkumar.blog/post/when-multiple-tech-stacks-make-sense-phonepe-super-apps) — December 27, 2025 · 15 min read · Tags: Architecture, Mobile Development, System Design, PhonePe, Super Apps, Team Organization
- [Why YouTube Live Chat Scales Without WebSockets](https://bhupeshkumar.blog/post/why-youtube-live-chat-scales-without-websockets) — December 17, 2025 · 12 min read · Tags: Architecture, Scalability, System Design, YouTube, Backend, CDN
- [Understanding How the YouTube Video Pipeline Works](https://bhupeshkumar.blog/post/inside-the-machine-youtube-video-pipeline) — December 17, 2025 · 15 min read · Tags: Architecture, Video Processing, System Design, YouTube, Backend, CDN, Transcoding
- [How 2025 Taught Me to Stand on My Own Feet](https://bhupeshkumar.blog/post/how-2025-taught-me-to-stand-on-my-own-feet) — December 15, 2025 · 6 min read · Tags: Personal, Growth, Reflection, Life Lessons, Resilience
- [How React Got Hacked: The Critical Server Components Vulnerability Explained](https://bhupeshkumar.blog/post/react-server-components-security-vulnerability-cve-2025-55182) — December 5, 2025 · 8 min read · Tags: Security, React, Web Development, Vulnerability, Server Components
- [How NPM Was Hacked: The Shai-Hulud Attack Explained Simply](https://bhupeshkumar.blog/post/npm-shai-hulud-attack-explained) — November 28, 2025 · 10 min read · Tags: Security, npm, JavaScript, DevOps, Supply Chain
- [Kimi 2: The Chinese Open-Source LLM Challenging GPT-4/5](https://bhupeshkumar.blog/post/kimi-2-chinese-open-source-llm-challenging-gpt) — January 25, 2025 · 12 min read · Tags: AI, Open Source, LLM, Machine Learning, Technology, China
- [StartDB Update: SQL Query Engine & B-Tree Indexing Now Live!](https://bhupeshkumar.blog/post/startdb-update-sql-query-engine-btree-indexing) — January 20, 2025 · 15 min read · Tags: Database, Go, SQL, B-Tree, Query Engine, StartDB
- [Why Cloudflare Workers AI is the Future of Serverless AI Development](https://bhupeshkumar.blog/post/cloudflare-workers-ai-future-serverless-ai-development) — November 7, 2025 · 12 min read · Tags: AI, Cloudflare, Serverless, Edge Computing, TypeScript
- [The AI Era: Let's Face the Truth](https://bhupeshkumar.blog/post/the-ai-era-truth) — October 20, 2025 · 6 min read · Tags: AI, Industry, Careers, Opinion
- [Building StartDB: The Future of AI-Powered Databases](https://bhupeshkumar.blog/post/building-startdb-ai-powered-database) — January 15, 2025 · 15 min read · Tags: Database, AI, Machine Learning, Go, TypeScript, Architecture
- [Building a Cal.com Clone for $50/Month: My System Architecture](https://bhupeshkumar.blog/post/cal-com-clone-architecture) — September 16, 2025 · 5 min read · Tags: Architecture, Cost Optimization, Scheduling, Cloudflare, AWS
- [How I Think Unacademy's Live Class Backend Works: A Technical Deep Dive](https://bhupeshkumar.blog/post/unacademy-backend-architecture) — August 29, 2025 · 8 min read · Tags: Backend, Architecture, Real-time, EdTech
- [Building a Serverless Trading Platform Backend: SEBI Hackathon Project](https://bhupeshkumar.blog/post/sebi-trading-platform) — September 1, 2025 · 8 min read · Tags: Backend, Trading, FinTech, Serverless, Security
- [Learning Advanced Backend Engineering by Building Mini-Automation Features](https://bhupeshkumar.blog/post/learning-advanced-backend-automation) — September 18, 2025 · 12 min read · Tags: Backend, Learning, Distributed Systems, Queues, Webhooks, Architecture
- [How I Got My First Internship Implementing Prometheus & Grafana (And Why You Should Learn It)](https://bhupeshkumar.blog/post/how-i-made-800-in-6-hours-prometheus-grafana) — January 4, 2026 · 18 min read · Tags: Monitoring, Prometheus, Grafana, DevOps, Backend, Observability

## Contact

- **Email:** 4bhupeshkumar@gmail.com (mailto:4bhupeshkumar@gmail.com)
- **GitHub:** @Bhup-GitHUB (https://github.com/Bhup-GitHUB)
- **Twitter:** @bhupesh_ku36215 (https://x.com/bhupesh_ku36215)
- **LinkedIn:** /in/bhupesh-k-185327366 (https://www.linkedin.com/in/bhupesh-k-185327366/)
- **Book Call:** cal.com/bhupesh-kumar (https://cal.com/bhupesh-kumar-91o6te/15min)
- **Resume:** Google Drive ↗ (https://drive.google.com/file/d/1QN4Ad7cTMeNBeGYz3oCMeoSHA-DXvN8h/view?usp=sharing)

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