Daniel Izdebski
Conference & Hackathon Organiser
Poland
Summary
🤩
Rockstar🎓
Top SchoolDaniel Izdebski is a blockchain-focused software engineer and event organiser with nine years of experience building and testing Ethereum tooling and smart contract infrastructure. He has contributed backend improvements to prominent open-source projects like Hardhat and Waffle—work that strengthened transaction pool management, nonce handling, and smart-contract test matchers used widely by the Ethereum developer community. Daniel balances hands-on protocol engineering across startups and labs with community leadership as a conference and hackathon organiser at ETHWarsaw. Comfortable shipping backend systems and developer tooling, he also brings practical automation, testing, and documentation skills honed through freelance work and early systems internships. A Poland-based engineer who “likes ducks,” he combines low-level blockchain expertise with a knack for improving developer experience.
9 years of coding experience
4 years of employment as a software developer
Bachelor of Applied Science - BASc Applied Computer Science, Bachelor of Applied Science - BASc Applied Computer Science at University of Silesia in Katowice
Polish, English
Github Skills (19)
solidity10
ethersjs10
testing10
typescript10
test-framework10
chai10
ethereum10
blockchain10
typescript-types10
smart-contracts10
typescripts10
hardhat10
bignumber9
bignum9
debug9
Programming languages (9)
Github contributions (5)
TrueFiEng/Waffle
Sep 2020 - Oct 2020
Library for writing and testing smart contracts.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:6 reviews, 12 commits, 11 PRs in 1 month
Contributions summary:Daniel primarily contributed to the `waffle` library, focusing on enhancing its testing capabilities for smart contracts. Their work involved modifying and extending matchers, specifically related to balance and token balance assertions within the testing framework. They introduced new matchers, such as `changeEtherBalance` and `changeEtherBalances`, and improved the existing ones to handle transaction fees and other scenarios. These contributions aimed to improve the testing experience by making assertions more flexible and accurate.
ethereumtestingsoliditysmart-contractscontracts
NomicFoundation/hardhat
Oct 2020 - Dec 2020
Hardhat is a development environment to compile, deploy, test, and debug your Ethereum software.
Role in this project:Back-end Developer
Back-end DeveloperContributions:89 commits in 1 month
Contributions summary:Daniel contributed to the development of the Hardhat network's transaction pool, focusing on managing and organizing pending and queued transactions. Their work involved refactoring the `TransactionPool` class to divide transactions into pending and queued lists, implementing logic for adding transactions, and ensuring correct nonce handling. Further contributions included adding tests to validate the transaction pool's behavior, along with adding snapshot and revert methods to the `TxPool`.
stack-tracesethereumhardhatjavascriptevm
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