Anish Singh Chauhan

Backend & AI engineer. I build realtime systems and the infrastructure they run on.

I like my sockets long-lived, my deploys boring, and my p99s honest — if you can't measure it, you shipped a guess. This page practices what it preaches: one hand-written file, no framework, and it times itself on arrival.

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              `+oooooo:
              -+oooooo+:
            `/:-:++oooo+:
           `/++++/+++++++:
          `/++++++++++++++:
         `/+++ooooooooooooo/`
        ./ooosssso++osssssso+`
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      -osssssso.      :ssssssso.
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    /ossssssss/        +ssssooo/-
  `/ossssso+/:-        -:/+osssso+-
 `+sso+:-`                 `.-/+oso:
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anish@arch — yes, btw
─────────────────────────
OS	Arch Linux x86_64
Role	Backend & AI Engineer
Uptime	shipping since aug 2024
Kernel	node 22 · python 3.12 · typescript
WM	kubernetes (−40% failed deploys)
Terminal	realtime — websockets · voice ai (~500ms)
Packages	docker aws redis postgres mongo rasa
Theme	gruvbox [dark, obviously]
Locale	en_IN · Ghaziabad
Status	shipping
This page	~9 kB · — ms dom-ready · 0 frameworks · 0 trackers

5K+ requests/min at peak, 99.9% uptime, 1K+ concurrent users — SDC-SI backend ~500ms voice-to-first-audio for a live AI interviewer — AI Interview Platform 200+ simultaneous players held in one live contest round — CodeClash −40% deployment failures after owning the K8s lifecycle — ONDL infra

// navigate: the tmux windows up top, or press h / l — ? for all keys

# Experience

// systemctl status --all

maidanplay.service ● active (running)2026-05 → now

SDE Intern, Founding Engineer · MaidanPlay · remote

Early-stage startup, two engineers total. I own the stack end to end — architecture, backend, frontend, and the deploy.

Building a greenfield product from the first line of code: system architecture, cloud infrastructure, and CI/CD, with no prior codebase to lean on.
Shipped 3 internal applications solo — backend, frontend, and deployment for each.

node.js
typescript
next.js
mongodb
docker
aws

ondl.service ○ completed2025-05 → 2026-04

Backend Developer · Open Network Digital Logistics · remote

Backend and infrastructure for AI-driven conversational workflows across internal tools.

Built the RASA NLP layer from scratch — intents, dialogue models, custom actions doing real-time DB operations — powering 5+ internal tools.
Owned the Kubernetes lifecycle end to end: provisioning, production manifests, ingress, automated CI/CD — −40% deployment failures.
Shipped REST APIs across a microservices system, cutting average response time 25%.

python
fastapi
rasa
kubernetes
docker
mongodb
ci/cd

sdc-si.service ○ completed2024-08 → 2025-04

Backend Engineer · Software Development Center — Software Incubator · Ghaziabad

Backend APIs and server-side services at scale, plus the CI/CD to ship them.

Scaled REST APIs to 5K+ requests/min at peak with 1K+ concurrent users and 99.9% uptime — connection pooling, caching, load balancing.
Cut release cycles 35% by systematizing CI/CD and refactoring legacy modules; mentored 20+ developers across 5+ system-design workshops.

node.js
express
mongodb
django
aws
ci/cd

# Projects

// ls ~/deployments — everything below is realtime, everything is mine

AI Interview Platform [source]

A realtime AI voice interviewer that holds an actual conversation — and starts talking back in about half a second.

mic ─▶ ws ─▶ stt deepgram ─▶ llm claude ─▶ tts ─▶ MediaSource ⏱ ~500ms

Duplex audio pipeline streaming synthesized speech as binary MP3 chunks over WebSockets; playback begins in ~500ms via MediaSource Extensions, gap-free.
Streaming STT behind a provider-abstraction layer driving a state-machine interview flow — intro, warm-up, topics, scoring.
Fully provider-agnostic core: LLM, STT, TTS, and storage all hot-swappable via config; async multi-dimensional answer scoring on BullMQ + Redis workers.

node.js
typescript
websockets
deepgram
claude
bullmq
redis

CodeClash [source]

A realtime competitive-programming platform — 1v1 matches, Elo ratings, and live contests that don't fall over when everyone submits at once.

player ⇄ socket.io ⇄ engine ─▶ λ sandbox ─▶ verdict ─▶ elo ⏱ 200+ live · 200+ subs/hr

Event-driven WebSocket contest engine that held 200+ simultaneous participants per contest at 200+ submissions/hour.
Secure, isolated code execution on AWS Lambda custom runtimes — 100% environment isolation per run.
60% DAU growth in the first month after launch.

node.js
typescript
socket.io
aws lambda
postgresql
prisma

Classence [source]

Ed-tech backend serving 500+ students — realtime chat, live video lectures, and assignment workflows.

student ⇄ socket.io / webrtc ⇄ node ─▶ mongo │ nginx on ec2 ⏱ 3K+ concurrent conns

Realtime chat and live video via Socket.IO + WebRTC; deployed on AWS EC2 behind Nginx, sustaining 3K+ concurrent connections.

node.js
typescript
mongodb
webrtc
socket.io
nginx
ec2

# Stack

// pacman -Qe — explicitly installed, actually used

backend Node.js · Express · FastAPI · Django · RASA

languages TypeScript · Python · JavaScript · C++ · Java · Bash

infra Kubernetes · Docker · AWS (EC2, S3, Lambda, API Gateway) · Nginx · GitHub Actions · CI/CD

data PostgreSQL · MongoDB · Redis · MySQL

protocols WebSockets · Socket.IO · WebRTC · gRPC · REST · GraphQL · OAuth2 · JWT

ai LLM integration (Anthropic Claude) · streaming STT/TTS · Deepgram · RASA NLP · realtime audio

concepts distributed systems · event-driven architecture · microservices · caching · load balancing

## Awards

Smart India Hackathon — 1st place. India's largest national hackathon; led the team to first across thousands of competing teams.
ITER-8 Coding Contest, AKGEC — 1st / 200+
Code Quest, AKGEC — 3rd / 300+

## Education

B.Tech, Computer Science — Dr. A.P.J. Abdul Kalam Technical University · 2023 → 2027

# Contact

// new message

To	Anish Singh Chauhan <anishthe01@gmail.com>
From	you
Subject	something worth building

Want to talk realtime systems, argue about infrastructure, or point me at a hard problem? Email is the fast path — I read everything.

anishthe01@gmail.com

Elsewhere: github/1pizzaslice · linkedin · x/fromanish

:wq

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