
Gursimran Singh
Full-Stack Engineer
I'm 20. I build full-stack products and agentic systems, and I optimize things for a living. 900+ LeetCode problems solved.
I run Dhaniverse, a game that teaches money with a real on-chain ledger under it. It pulled $7,000 out of WCHL'25 against 12,000+ projects worldwide.
2025 - Present
- Architected and shipped a full-stack financial-literacy game to 1,200+ users in its first two months, leading a 3-person engineering team across Azure and ICP mainnet.
- Built the game client in React, TypeScript, and Phaser 3 (WebGL), at a steady 60 fps through chunked loading, against a Deno (Oak) API over MongoDB.
- Deployed Rust canisters to ICP mainnet: decentralized identity, on-chain achievements, and a tamper-proof banking ledger fed by HTTP outcalls.
- Engineered ContRAG, a schema-introspecting RAG engine over PostgreSQL, MongoDB, and pgvector, published on npm, powering adaptive AI NPCs.
Backend Developer (Contract), Remote
Health & Research Data Platform
Dec 2025 - Feb 2026
- Migrated auth from Clerk to Supabase across three Next.js apps and an Express/NestJS API, with RBAC and Row Level Security on all 47 Postgres tables.
- Designed CI that runs only affected tests, cutting single-module pipelines from 20 to 8 minutes in GitHub Actions.
- Consolidated validation onto Zod contract schemas, retiring 20+ validators; shipped releases on Railway.
achievements.
WCHL'25 Global Finale, Honorable Mention
Honorable Mention ($5,000) against 12,000+ projects worldwide with Dhaniverse.
WCHL'25 Europe Regional Round
3rd Place ($2,000) in the Europe Regional Round.
HackMol 6.0, NIT Jalandhar
1st Place (₹50,000) at North India's biggest hackathon, out of 4,000+ registrations from 700+ colleges.
socials.