Eitan Seri-levi
Software Engineer at Sigma Prime
Torrance, California, United States
Summary
🤩
Rockstar🎓
Top SchoolEitan Seri-levi is a software engineer with 11 years of experience focused on Ethereum core protocol work and systems-level backend engineering. Currently at Sigma Prime, he contributes to Lighthouse—an influential Rust-based Ethereum consensus client—where his work ranges from spec-aligned optimizations to production features like health endpoints and Windows log-permission fixes. He has held leadership roles in product engineering at DcentraLab and was an Ethereum Protocol Fellow, combining hands-on implementation with protocol-level understanding. His background spans languages and stacks from Go and Rust to C# and TypeScript, reflecting a pragmatic approach to building reliable distributed systems. Notably, his contributions balance low-level correctness (committee fraction simplification, idempotent payload caches) with operational improvements that make clients safer and easier to run.
11 years of coding experience
9 years of employment as a software developer
Cadet, Computer Science, Cadet, Computer Science at 42University of California Santa CruzSouth Torrance High School
English, Hebrew
Stackoverflow
341reputation
29kreached
12answers
12questions
Github Skills (18)
back-end-development10
staking10
ethereum10
rust10
error-handling9
concurrency9
optimization8
optimisation8
e-mail6
html6
angular6
angular-http6
beautifulsoup6
http-post6
webscraping6
Programming languages (10)
Github contributions (5)
sigp/lighthouse
Apr 2023 - Jul 2026
Ethereum consensus client in Rust
Role in this project:
Back-end Developer
Back-end DeveloperContributions:485 reviews, 283 PRs, 43 pushes in 3 years 3 months
Contributions summary:Eitan contributed to the development of the Ethereum consensus client, Lighthouse, focusing on improving Windows log file permissions. They addressed issues related to restricted permissions and updated the help text for the `--logfile-no-restricted-perms` flag. They also removed withdrawal warnings after the Shapella upgrade and simplified the `calculate_committee_fraction` function to align with the v1.3.0 spec. Furthermore, the user worked on various optimizations like keeping payload cache idempotent, debouncing logs, and adding a feature for handling block production and the health endpoint.
consensusethereumrusteth2proof-of-stake
eserilev/lighthouse
Apr 2023 - Jul 2026
Ethereum consensus client in Rust
Contributions:31 PRs, 1737 pushes, 237 branches in 3 years 4 months
consensusethereumrust
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