Leo Lara
Team Lead Engineer at Ethereum Foundation
Málaga, Andalusia, Thailand
Summary
👤
Senior🎓
Top SchoolLeo Lara is a Team Lead Engineer with 13 years of experience building distributed systems, embedded software, fintech backends and cutting-edge ZK/zkEVM tooling at the Ethereum Foundation. He mixes hands-on systems programming in Go, Rust, C/C++ and ARM assembler with pragmatic architecture and team leadership, championing SOLID, DRY and TDD practices. Leo has driven major refactors in high-profile open-source projects such as Prysm (Ethereum PoS client) and contributed core fixes to zkEVM circuits, demonstrating both protocol-level rigor and practical engineering. He’s led product and engineering teams from startup MVPs to acquisitions (co‑founder/CTO at Uniplaces) and helped ARM bring server software to ARMv7, so he comfortably spans low-level optimization to developer tooling. Based in Málaga, he’s equally at home mentoring teams as he is implementing compilers and ZKP languages, and he brings an uncommon blend of embedded-systems roots to modern blockchain research.
13 years of coding experience
19 years of employment as a software developer
Computer Engineering Computer Science, Computer Engineering Computer Science at Universidad de MálagaBCs (Hons) Computer Science, BCs (Hons) Computer Science at University of Bath
English, Spanish, Portuguese
Stackoverflow
59reputation
2kreached
4answers
0questions
Github Skills (18)
testing10
halo10
implement10
go10
ethereum10
blockchain10
zk10
zkp10
protocols10
rust10
cryptography9
refactoring9
nginx6
concurrency6
certbot6
Programming languages (13)
Github contributions (5)
privacy-scaling-explorations/zkevm-circuits
Sep 2022 - Jan 2023
Role in this project:
Back-end Developer
Back-end DeveloperContributions:132 reviews, 56 commits, 48 PRs in 4 months
Contributions summary:Leo primarily contributed to the implementation of the EVM circuit, focusing on bug fixes and new feature development. They addressed errors in column creation and added a helper function to calculate the TxLog address key. The contributions involved modifying core files related to the EVM circuit and copy circuit, and also updating associated witness data. These changes likely enhance the functionality and efficiency of the zero-knowledge EVM implementation.
prysmaticlabs/prysm
Jan 2022 - Aug 2022
Go implementation of Ethereum proof of stake
Role in this project:Back-end Developer
Back-end DeveloperContributions:17 reviews, 20 commits, 12 PRs in 7 months
Contributions summary:Leo primarily worked on refactoring and renaming code related to the "Merge" upgrade of the Ethereum proof-of-stake client, Prysm. They made significant changes, renaming code elements to reflect the "Bellatrix" codename, which involved renaming files, variables, and comments throughout the codebase. Furthermore, they moved error declarations to increase code reusability across different state versions. In addition, they also contributed to the refactoring of testing code.
golangconsensusstakeethereumproof-of-stake
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