Radoslaw Zagorowicz
C Developer at Argot Collective
Warsaw, Masovian Voivodeship, Poland
Summary
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Rockstar🎓
Top SchoolRadoslaw Zagorowicz is a C/C++ developer with 11 years of experience focused on Ethereum client and Solidity compiler engineering, currently working on the Solidity compiler at Argot Collective. He has deep EVM internals expertise demonstrated by performance and cryptography contributions to evmone and by adding rigorous EVM↔EWASM tests in the Solidity repo. His background spans research roles at the Ethereum Foundation (zkevm and Ipsilon teams), blockchain product leadership as a Hoard co-founder/CEO, and long-standing systems development in C++ across industry and academia. With a master’s in applied mathematics from the University of Warsaw, he combines formal numerical thinking with practical low-level optimization, and is notable for shipping EVM opcode work (e.g., PUSH handling, DUPN/SWAPN tests) that improves both speed and correctness.
11 years of coding experience
14 years of employment as a software developer
Master's Degree, Applied Mathematics, Master's Degree, Applied Mathematics at University of Warsaw
English, German
Github Skills (8)
evm10
rust10
solidity10
virtual-machine10
ethereum10
blockchain10
optimization10
testing10
Programming languages (11)
Github contributions (5)
ethereum/evmone
Jan 2022 - Jan 2023
Fast Ethereum Virtual Machine implementation
Role in this project:
Back-end Developer
Back-end DeveloperContributions:329 reviews, 87 commits, 79 PRs in 1 year
Contributions summary:Radoslaw contributed to optimizing the Ethereum Virtual Machine (EVM) implementation, specifically focusing on performance improvements related to PUSH instructions. They refactored and optimized the handling of PUSH data within the `evmone` library. Additionally, the user added a tracer test for code containing zero bytes and implemented unit tests for the EIP-663 DUPN and SWAPN opcodes, demonstrating a focus on thorough testing and validation. The contributions indicate expertise in EVM internals.
ethereumblockchainevmvirtual-machineethereum-virtual-machine
ethereum/solidity
Dec 2018 - Jan 2020
Solidity, the Smart Contract Programming Language
Role in this project:Back-end Developer
Back-end DeveloperContributions:254 reviews, 8 commits, 67 PRs in 1 year 2 months
Contributions summary:Radoslaw's commits primarily involve adding test cases for the EVM to EWASM translator within the Solidity repository. These tests focused on comparison and arithmetic operations, specifically for features of the EWASM interpreter. The contributions demonstrate the user's work in Yul, the intermediate representation language, for the Solidity compiler. The changes include modifications to existing test files to incorporate new test scenarios and functionality.
cppsmart-contractethereumcontractblockchain
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