Portrait of Gursimran Singh

Gursimran Singh

Full-Stack Engineer

I'm 20. I build full-stack products and agentic systems, and I like making complicated things feel simple. I've solved 900+ problems on LeetCode.

I run Dhaniverse, a financial-literacy game that reached 1,200+ users in two months. It earned $7,000 in WCHL'25 awards against 12,000+ projects worldwide.

Interested in working together? Check out my Resume

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experience.

2025 - Present

  • Architected and shipped a financial-literacy game to 1,200+ users in two months, leading a 3-person team across Azure and ICP mainnet.
  • Built the Web3/AI stack: Rust canisters for identity, achievements, and banking, plus ContRAG over PostgreSQL, MongoDB, and pgvector for adaptive AI NPCs.
React/
TypeScript/
Phaser 3/
Deno/
Rust/
ICP/
MongoDB/
PostgreSQL/
pgvector/
Azure

Backend Developer (Contract), Remote

Health & Research Data Platform

Dec 2025 - Feb 2026

  • Migrated auth from Clerk to Supabase Auth across three Next.js apps and an Express/NestJS API, with RBAC and Row Level Security on all 47 Postgres tables.
  • Cut CI from 20 to 8 minutes with affected-test execution and consolidated validation onto Zod, retiring 20+ validators.
Next.js/
TypeScript/
NestJS/
Express.js/
Supabase Auth/
PostgreSQL/
Zod/
GitHub Actions/
Railway

projects.

Repayd

WebsiteGitHub

Safety and insurance layer for AI-agent wallets on Arc: holds suspicious USDC, blocks violations before broadcast, and settles covered claims in the same block.

Rawscript

WebsiteGitHub

Runs .ts files natively in the browser via a Service Worker and esbuild-wasm. No bundler, no build step.

View all

achievements.

socials.

@gursimrxn
@gursimrxnsingh
@gursimrxnsingh
sgursimranmatharu@gmail.com