Arush

Singh

I am a Blockchain developer specialising in Solidity Smart Contract development and Zero-Knowledge Cryptography, with a focus on DeFi Protocols, on-chain automation, and rigorous testing. Built and deployed production contracts integrating Chainlink VRF & Automation, and authored ZK circuits in Noir — spanning Merkle Sum Tree proof-of-solvency and undercollateralised credit verification — with on-chain proof verification via Barretenberg UltraHonk. Grounded in smart contract security principles — reentrancy, access control, invariant & fuzz testing — and actively advancing toward a ZK Engineer specialisation.