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.

https://linkedin.com/in/04arush

https://x.com/04arush

Work experience

Cubane.space

October 2026 – Current time

Job title

Blockchain Protocol Engineer

Work experience & achievements

- Design and develop scalable blockchain architecture for Cubane's platform, working directly with the founders and the product and design teams. - Build secure smart contracts, decentralised protocol components and off-chain integrations. - Monitor and optimise protocol performance for efficiency, security and reliability.