Tomasz Rejowski
Software Engineer at Software Mansion
Krakow, Lesser Poland Voivodeship
Summary
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Rockstar🎓
Top SchoolTomasz Rejowski is a software engineer with eight years of experience building full-stack web applications and Web3 tooling from Krakow, Poland. Since 2019 he has been contributing to Software Mansion's engineering efforts, bringing a pragmatic, back-end-focused approach to robust APIs and developer-facing libraries. He has hands-on experience improving error handling, test coverage, and stability in open-source projects—most notably enhancing Provider and Contract behavior in the starknet.js ecosystem. An early IBM intern and AGH University attendee, Tomasz pairs formal training with production-grade engineering practices. He blends practical refactors with careful unit testing to reduce user friction and improve observability in distributed systems. Colleagues rely on him to turn subtle protocol edge cases into predictable, testable behavior for developers using blockchain tooling.
8 years of coding experience
1 year of employment as a software developer
AGH University
Stackoverflow
26reputation
100reached
1answer
0questions
Github Skills (12)
zk10
zkp10
starknet10
javascript10
ethereum10
typescript-types9
typescript9
typescripts9
error-handling9
testing8
cairo-lang6
blockchain6
Programming languages (9)
Github contributions (5)
starknet-io/starknet.js
Jun 2022 - Jun 2022
JavaScript library for StarkNet
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 2 PRs, 11 comments in 1 day
Contributions summary:Tomasz primarily focused on enhancing the error handling and user experience within the Starknet.js library. Their contributions include modifications to the `Provider` and `Contract` classes to allow users to manage contract errors more effectively. They also refactored the `fetchEndpoint` method, added unit tests for GatewayError handling, and addressed related bug fixes, improving the robustness and stability of the library.
javascript-libraryethereumjavascriptblockchainweb3
Arcticae/SysOpy
Mar 2018 - Jun 2018
Contributions:52 pushes, 1 branch in 3 months
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