~/askwhyharsh

$ Harsh Singh @askwhyharsh

software engineer / protocol systems

I'm a software engineer with 4 years across DeFi and distributed systems, currently open and actively looking for freelance, contract, and full-time roles. My full-time work spans Alive.house, Qiro.fi, and Caddy Finance. Most of it lives between protocol smart contracts, distributed systems, and backend infrastructure.

Some highlights: 4 years building smart contracts, DeFi protocols, marketplaces, and distributed systems; Built production protocol infrastructure across Caddy Finance, Qiro.fi, and Alive.house; Currently open to freelance, contract, and full-time roles; LinkCollect — social bookmark tool with 3,000+ active users.

How I got here →

Experience

Caddy Finance / Founding Engineer

Mar 2025 — 2026

Remote

Architected core protocol smart contracts from the ground up, owning the full on-chain design and deployment lifecycle. Designed upgradeable contract architecture with a focus on security, gas efficiency, and protocol extensibility.

Qiro.fi / Founding Blockchain Engineer

Jan 2024 — Feb 2025

Remote

Designed and deployed Qiro Underwriting Protocol V1: a decentralized lending protocol with on-chain credit assessment and risk-tiered lending pools. Integrated Ritual's Inferent and ezkl for privacy-preserving, verifiable credit scoring. Wrote invariant test suites and fuzz tests in Foundry, then profiled and optimized lending, repayment, and liquidation flows.

Alive.house / Blockchain Developer

Mar 2022 — Jun 2023

Remote

Architected smart contract infrastructure for the Alive.house NFT marketplace using UUPS and Beacon proxy patterns. Designed and implemented royalty distribution mechanics for accurate, trustless splits across primary sales and secondary market trades.

Stack

Systems / Go, Rust, TypeScript, PostgreSQL, Redis, Kafka
Web3 / Solidity, Foundry, Hardhat, Viem, Ethers.js, EigenLayer
DeFi / Vault design, lending protocols, Hyperliquid, perps, AMMs
Frontend / React, Next.js, Tailwind, NestJS

Elsewhere