Facu Spagnuolo
Cofounder And CTO at Mimic Finance
Argentina
Summary
🤩
Rockstar🎓
Top SchoolFacu Spagnuolo is a Cofounder and CTO with 11 years of hands-on experience building and securing Ethereum smart contracts and decentralized finance infrastructure from Argentina. He has driven core protocol and tooling work at Aragon, OpenZeppelin and Balancer, contributing to widely used libraries such as OpenZeppelin Contracts and upgrades SDK and to Aragon’s dApp framework. At Balancer he implemented mutable strategy and vault improvements for V2, and at OpenZeppelin he helped harden ERC standards and upgradeability primitives—demonstrating deep expertise in both contract design and test-driven security. As a former blockchain engineer and security researcher turned startup CTO, he blends rigorous vulnerability-aware development with product-focused execution. Unusually for a CTO, he remains an active contributor to foundational open-source smart contract projects, keeping his technical edge close to the protocol layer.
11 years of coding experience
8 years of employment as a software developer
Computer Engineer Computer Engineering, Computer Engineer Computer Engineering at Pontificia Universidad Católica Argentina 'Santa María de los Buenos Aires'
Spanish, English
Github Skills (14)
evm10
erc2010
openzeppelin10
contract10
smart-contracts10
aragon10
solidity10
ethereum10
ethereum-dapp10
blockchain10
testing10
security9
back-end-development8
web3js8
Programming languages (10)
Github contributions (5)
OpenZeppelin/openzeppelin-sdk
Feb 2018 - Feb 2019
OpenZeppelin SDK repository for CLI and upgrades.js
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 releases, 404 commits, 185 PRs in 11 months
Contributions summary:Facu contributed to the OpenZeppelin SDK repository by implementing and integrating smart contract libraries, including the `Ownable` and `Initializable` contracts. They upgraded the Solidity compiler version, demonstrating proficiency in managing dependencies and adapting to language changes. Their work primarily involved modifying core Solidity contracts and upgradeability proxies, reflecting a focus on enhancing contract functionality and maintaining the SDK's core components.
openzeppelinupgradessdkcli
balancer/balancer-v2-monorepo
Dec 2020 - Apr 2022
Balancer V2 Monorepo
Role in this project:Back-end Developer
Back-end DeveloperContributions:92 reviews, 273 commits, 165 PRs in 1 year 4 months
Contributions summary:Facu contributed to the development of the Balancer V2 monorepo, focusing on Solidity smart contract development. Their work involved implementing mutable strategies, including extracting strategy fee computation code and supporting mutable weighted strategies, with modifications to settings and tests. The user also worked on reducing investment manager logic within the vault and parameterizing swap tests to support two-token pools. They also made improvements to the ERC20 contracts and fixed several bugs.
monorepoethereumsoliditydefibalancer
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