Kuba Mazurek
Senior Software Engineer at Juni
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolKuba Mazurek is a Senior Software Engineer based in Warsaw with 11 years of experience building backend systems, automation services, and developer tooling across fintech, decentralized computing, and mobile platforms. At Juni he architects and maintains core accounting automation and ingestion services used by hundreds of e-commerce businesses, integrating OCR, Gmail and Swedish accounting standards like Fortnox/SIE. Previously he contributed heavily to the Golem Network’s backend and Python SDK, helped migrate clients to Rust, and built a widely adopted Golem Test Harness for multi-node integration testing. He started and led Android teams and payment reliability work at companies including SwingDev and Uber, combining hands-on engineering with hiring and CI/CD setup. Known for curiosity and pragmatic problem solving, he often focuses on developer experience, maintainability and automation that reduces tedious manual work. Beyond product work he has run public workshops and led technical recruitment, bridging engineering and community engagement.
11 years of coding experience
7 years of employment as a software developer
Bachelor of Engineering - BE Computer Science, Bachelor of Engineering - BE Computer Science at Polish-Japanese Academy of Information TechnologyComputer Science, Computer Science at Kingston UniversityInterdisciplinary Economic-Managerial Studies, Interdisciplinary Economic-Managerial Studies at University of Warsaw
English, Polish, German
Stackoverflow
1reputation
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Github Skills (10)
go10
dockers9
p2p9
python9
ethereum9
docker9
api8
dependency-management8
apidoc8
message-queue7
Programming languages (15)
Github contributions (5)
golemfactory/clay
Nov 2018 - May 2020
Golem is creating a global market for computing power.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:176 commits, 180 PRs, 314 pushes in 1 year 6 months
Contributions summary:Kuba primarily focused on back-end development tasks within the Golem project. They made significant changes to the `golemfactory/clay` repository, specifically modifying core task management functionality and integrating code for the Concent service. The user also made changes to a variety of components related to the Concent service, including message handling and history management, and they contributed to enhancements in Docker configurations and dependency updates. Furthermore, the user addressed code style and maintainability issues.
pythonethereump2pblockchaincryptocurrency
golemfactory/goth
Apr 2020 - Apr 2022
Golem Test Harness, an integration testing framework for yagna - the (new) Golem Network client.
Contributions:33 releases, 111 reviews, 535 commits in 2 years
harnessstress-testingtesting-frameworktest-harnessnetwork-client
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