Barfinex
Mike McDonald

Michael McDonald

Co-founder, Lead Engineer · Balancer Labs

Implementation and maintenance of Balancer V1/V2 smart contracts and upgrade releases

Implemented the protocol's core smart contracts, writing and maintaining the Solidity code that powered Balancer V1 pools and subsequent V2 components. Engineering work included the core pool logic for swaps and rebalancing, the Smart Pool hooks, and later the Vault-centric contract family that altered how assets are held and trades are routed on-chain. Led deployment processes, coordinated formal audits and post-deployment patches, and authored or reviewed upgrades that addressed security incidents and economic edge cases. Engineering decisions on gas optimizations and contract modularity materially affected transaction costs for traders and the capital efficiency of liquidity providers. Worked closely with governance actors to prepare on-chain upgrade proposals, provided technical specifications for governance votes, and supported the community in integrating third‑party tooling and adapters. The cumulative effect of these engineering contributions was to make Balancer's primitives robust enough for broad composability and integration across the DeFi ecosystem.

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