Przemyslaw Rzad
DevOps Engineer at vlayer Labs
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolPrzemyslaw Rzad is a DevOps engineer based in Warsaw with nine years of experience building and operating blockchain and web applications. He blends hands-on DevOps and CI/CD automation with full-stack and protocol-level contributions to prominent open-source projects such as polkadot-js/apps and Parity’s polkadot-sdk, improving UI accuracy for referendum graphs, staking payout logic, and license/compliance workflows. His background as a blockchain developer (TrustToken, ETHWORKS) and contributions to tools like Waffle and useDApp show strong skills in smart-contract testing, DApp frontends, and integrating developer-facing tooling. Known for tackling both large automation tasks and subtle correctness issues—from high-precision graphing to preimage refactors and typo fixes—he brings meticulous attention to detail to production systems. He holds a Master’s degree in Computer Science from Warsaw University of Technology.
10 years of coding experience
8 years of employment as a software developer
Master’s Degree Computer Science, Master’s Degree Computer Science at Warsaw University of Technology
Polish, English, German
Github Skills (24)
substrate10
github-ci10
javascript10
solidity10
testing10
typescript10
ui-design10
cicd10
daap10
polkadot-js10
chai10
ethereum10
blockchain10
typescript-types10
smart-contracts10
Programming languages (13)
Github contributions (5)
TrueFiEng/useDApp
Feb 2021 - Dec 2022
Framework for rapid Dapp development. Simple. Robust. Extendable. Testable
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:425 reviews, 185 commits, 216 PRs in 1 year 10 months
Contributions summary:Przemyslaw primarily focused on developing the frontend for the DApp, implementing features related to chain calls and block metadata. They added dependencies, ported the useChainCalls functionality, and included example usages. Additionally, they worked on creating and integrating a high-level test for the useBlockNumber hook. Further work involved refactoring and renaming various components, adding examples for embeddable components and providing styling adjustments.
reactdapp-developmentdappethereumblockchain
TrueFiEng/Waffle
Oct 2018 - Jan 2023
Library for writing and testing smart contracts.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:77 reviews, 65 commits, 137 PRs in 4 years 3 months
Contributions summary:Przemyslaw primarily contributed to the `waffle` library, focusing on smart contract testing. Their work involved implementing library linking functionality, crucial for testing Solidity libraries within smart contracts. They also addressed a bug related to event emission and added the capability to recognize multiple event emissions with different arguments. Further contributions included improvements to error reporting and the addition of integration tests, along with necessary code modifications to integrate with a new version of Ganache.
ethereumtestingsoliditysmart-contractscontracts
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