Alex Beregszaszi
Dublin, Dublin 1, Hungary
Summary
🤩
Rockstar🎓
Top SchoolAlex Beregszaszi is a seasoned software engineer with 24 years of experience who blends deep systems-level expertise with prolific open-source contributions across the Ethereum ecosystem. He has worked as a software architect for Payzone, done research, and supported multinational teams, and today focuses on making Bitcoin and Ethereum more accessible through low-level work on Solidity, the EVM, evmone, go-ethereum and related tooling. His contributions span cryptography and firmware (Trezor), core client work (aleth, go-ethereum), developer tooling (Remix, Truffle, Ganache) and security improvements in OpenZeppelin, demonstrating an unusual comfort with both C/C++ and JavaScript stacks. He frequently improves build systems, APIs and developer experience—adding tests, docs and reproducible build scripts—so his impact is as much about reliability and usability as new features. Based in Dublin with MSc degrees from University College Dublin and University of Szeged, he combines academic rigor with pragmatic engineering. An interesting detail: he’s directly edited Ethereum’s Yellow Paper build process and EIPs while also contributing opcode and VM-level changes, showing influence from specification to implementation.
24 years of coding experience
Master of Science (MSc) Computer Science, Master of Science (MSc) Computer Science at University of SzegedMaster of Science (MSc) Advanced Software Engineering, Master of Science (MSc) Advanced Software Engineering at University College Dublin
German, English, Hungarian
Stackoverflow
161reputation
113reached
4answers
0questions
Github Skills (87)
compiler-development10
testing10
bash10
ganache10
c1110
ruby10
security10
c1710
automation10
remix10
dns10
smart-contracts10
optimization10
javascript10
solidity10
Programming languages (26)
Github contributions (5)
ethereum/solc-js
Apr 2016 - Jan 2022
Javascript bindings for the Solidity compiler
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:89 reviews, 397 commits, 284 PRs in 5 years 10 months
Contributions summary:Alex primarily worked on enhancing the JavaScript bindings for the Solidity compiler. Their contributions include importing and integrating external Solidity compiler versions from various sources. They implemented features such as downloading compiler versions from the solc-bin GitHub repository, creating standard JSON compilation, and improving the bytecode linking functionality. The user also performed code formatting and refactoring tasks to improve code quality.
ethereumjavascriptblockchaincompilersolidity
ethereumjs/ethereumjs-util
Nov 2015 - Apr 2018
Project is in active development and has been moved to the EthereumJS monorepo.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 review, 98 commits, 49 PRs in 2 years 5 months
Contributions summary:Alex primarily contributed to the core functionality of the `ethereumjs-util` library, introducing critical cryptographic helpers. Their work included implementing SHA256, RIPEMD160, and Keccak (SHA3) hashing algorithms, as well as creating functions for checksum address generation and validation. Furthermore, the user added helper functions for padding and truncating buffers and also included testing around twos complement. They also introduced a shorthand to hash RLP encoding.
reactmonorepodappethereumjavascript
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.