Giovanni Di Siena
Owner at 81k
Bath, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolGiovanni Di Siena is a blockchain engineer and founder with nine years of software experience and a deep focus on DeFi since 2019, working across lending, derivatives, AMMs, flash loans, NFTs and bonding curves. He combines hands-on Solidity and smart contract security expertise with full-stack DApp development using Hardhat/Foundry, web3/ethers.js, Node, GraphQL and React, and is a Chainlink Developer Expert active in DAO open-source contributions. As owner of 81k and former Blockchain Engineer at Cyfrin, he blends product-minded development with security research and consultancy readiness. His background in physics and scientific software (C/C++, Python, MATLAB) gives him a quantitative edge in protocol design and on-chain economic modeling. Based in Bath, UK, Giovanni is comfortable moving between audit-level security work and rapid prototyping, and he enjoys exploring ZK tooling and oracle integrations beyond typical DeFi stacks.
9 years of coding experience
5 years of employment as a software developer
Master of Physics (MPhys), Physics, Master of Physics (MPhys), Physics at University of Bath
Github Skills (72)
python10
abstract-syntax-tree10
muon10
numpy10
compound10
reduction10
curve10
truffle10
ethereum-contract10
solidity9
sdk9
web3py9
vulnerability-scanners9
contract9
reporter9
Programming languages (11)
Github contributions (5)
Cyfrin/report-generator-template
Apr 2023 - Feb 2025
A markdown-based template for generating Cyfrin audit reports, forked from Spearbit.
Contributions:17 PRs, 81 pushes, 21 branches in 1 year 9 months
Cyfrin/audit-repo-cloner
May 2023 - Mar 2024
A Python package to clone a repo and automatically prepare it for audit report generation
Contributions:6 reviews, 13 PRs, 24 pushes in 9 months
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