Hi, I'm Kaushik
Engineer
KS

About

Built StacyVM, an AI Agent runtime engine and got into top 10% of Y Combinator applicants. I build backend and AI infra, along with developer tools. I have won 8 hackathons and $7,850+ in prizes, and currently the president of my university's web3 club

Work Experience

Skills

React
Next.js
Typescript
Node.js
Python
Go
Postgres
Docker
Kubernetes
Solidity
SQL
Express
Redis
Tailwind CSS
Firecracker
Terraform
AWS
GitHub Actions
Linux
LangGraph
LangChain
My Projects

Check out my latest work

What started with simple websites gradually evolved into AI agents, developer tools, and large-scale full-stack applications.

NordStern

Payments infrastructure, fiat on/off-ramp, built with a team of 2. Co-built a live payments platform that lets licensed businesses move money between Indian bank rails (UPI, IMPS, NEFT) and blockchain settlement, with KYC and compliance screening built in. Co-designed the money-movement core so a payment can never pay out twice under retries, crashes, or duplicate provider callbacks: an idempotent outbox with a single-winner atomic claim, plus a reconciler that repairs state after a crash. Automated per-tenant provisioning (isolated database, encrypted keys, container stack) and pinned the money-flow guarantees with integration tests against a real Postgres, run in CI on every change.

TypeScript
Node.js
PostgreSQL
Docker
Microservices
UPI / IMPS / NEFT
KYC & Compliance

StacyVM

Open-source sandbox execution engine (Go, Apache-2.0), built with a team of 3. Co-built and open-sourced a Go engine that runs untrusted code in isolated sandboxes; a pluggable provider interface swaps the isolation backend (Docker, Firecracker microVM, gVisor) from one config line, with no application code change. Cut sandbox cold-start from 1,165 ms to 28 ms (41×) via Firecracker snapshot-and-restore, with a published, reproducible benchmark; added a Traefik layer giving ephemeral sandboxes zero-config public preview URLs. Shipped a REST API, CLI, and Python + TypeScript SDKs; review and merge teammates' pull requests, with tests and CI gating every change. Selected in the top 10% of Y Combinator Spring 2026 applicants.

Go
Firecracker
gVisor
Docker
Traefik
REST API
Python SDK
TypeScript SDK
Apache-2.0

TaurusSwap

Multi-asset concentrated liquidity AMM on Algorand, using sphere-and-torus geometry to support pools of up to 10,000 tokens instead of the usual two. Cuts on-chain verification to O(1) regardless of pool size, with ~150x the capital efficiency of Curve-style stableswap pools at a $0.99 depeg and 3.3s finality.

Algorand
Python
TypeScript
React
AMM
DeFi

Stacy IDE

Browser-based AI development platform for Stellar/Soroban smart contracts — an AI coding assistant, isolated Docker sandbox, and one-click deployment in a single IDE. Dual-mode AI writes Soroban (Rust) contracts or Next.js frontends from a prompt, with stub-detection that rejects placeholder code. Shown at the Stellar Monthly Builder Challenge, Stellar Builder Camp, and Hacktropica.

Next.js
TypeScript
Python
Docker
Stellar
Soroban
AI Agents
Hackathons

I like building things

What started with one hackathon became a journey across India. 8+ events later, I've built alongside incredible people, met inspiring people, and won a few along the way.

Uniswap Incubator

Uniswap Incubator

1st place — $2,750 prize. Built and demoed a working system on a 24-48 hour deadline.

Tech Fairness

Tech Fairness

1st place — $2,000 prize. Built ChainZap and demoed a working system on a 24-48 hour deadline.

Core Hacker House India

Core Hacker House India

India

2nd place — $1,500 prize. Built and demoed a working system on a 24-48 hour deadline.

Loops HackerHouse

Loops HackerHouse

Delhi

3rd place — $800 prize. Built and demoed a working system on a 24-48 hour deadline.

Stellar Residency

Stellar Residency

Winner — $350 prize. Built and demoed a working system on a 24-48 hour deadline.

Stellar Hackathon Chennai

Stellar Hackathon Chennai

2nd place — $250 prize. Built and demoed a working system on a 24-48 hour deadline.

Buidl on Creditcoin (Winner)

Buidl on Creditcoin (Winner)

Bangalore

2nd place — $200 prize. Made decentralized credit history on Creditcoin chain.

EthGlobal Delhi

EthGlobal Delhi

Delhi

Built a cross-chain bridge enabling seamless token swaps

Contact

Get in Touch

Have a project, an opportunity, or a problem worth building around? Email is the fastest way to reach me — I read every message and reply as soon as I can.

kaushiksamadder2003@gmail.comKolkata, India
GitHub
LinkedIn
X