Noah Citron
Engineering Partner at Andreessen Horowitz
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolNoah Citron is an engineering leader with a decade of experience building secure, production-grade software at the intersection of blockchain and infrastructure. As an Engineering Partner at Andreessen Horowitz after leading smart contract engineering at Index Coop, he combines strategic technical leadership with hands-on implementation. His open-source contributions to high-profile Rust projects like a16z/helios and Foundry demonstrate deep familiarity with low-level crypto primitives, Merkle/SSZ hashing, ABI encoding, and multi-chain light client bootstrapping. Noah’s background spans startups and internships at eBay and Set Labs, giving him both product sensibility and rigorous engineering discipline. Based in New York and trained in electrical and computer engineering at Duke, he’s comfortable transitioning between protocol design and tooling that accelerates Ethereum development.
10 years of coding experience
1 year of employment as a software developer
Bachelor of Engineering - BE Electrical and Computer Engineering, Bachelor of Engineering - BE Electrical and Computer Engineering at Duke UniversityPhillips Exeter Academy
Github Skills (25)
tooling10
ss10
solidity10
serializer10
evm10
dapptools10
decode10
decoding10
serialization10
merkle-tree10
ethereum10
cryptography10
encoding10
blockchain10
encode10
Programming languages (16)
Github contributions (5)
a16z/helios
Aug 2022 - Mar 2023
A fast, secure, and portable multichain light client for Ethereum
Role in this project:
Back-end Developer
Back-end DeveloperContributions:208 reviews, 126 commits, 394 PRs in 7 months
Contributions summary:Noah primarily focused on implementing core functionality for a multi-chain light client for Ethereum. Their contributions include writing code to hash committees and perform Merkle proof verification, crucial for light client operation. The user refactored code to fix ssz hashing, demonstrating a focus on low-level cryptographic implementation and data structure serialization. They implemented key functions for bootstrapping and syncing the light client, validating its operation against different states and blocks.
securelightethereumlight-clientportable
foundry-rs/foundry
Dec 2021 - May 2022
Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 reviews, 16 commits, 16 PRs in 5 months
Contributions summary:Noah primarily contributed to the `cast` tool within the Foundry project, adding new functionalities and improving existing ones. Their work included implementing commands for converting between Wei and ETH amounts, decoding ABI data, and encoding data for function calls. They also incorporated features like ENS resolution and proxy detection. Furthermore, the user added support for retrieving code from contracts using the `getCode` cheatcode.
foundryethereumsolcsethevm
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