Leszek Wiesner
Full-stack Developer at Joystream DAO
Wroclaw Metropolitan Area Poland
Summary
🤩
Rockstar🎓
Top SchoolLeszek Wiesner is a full-stack developer with roughly nine years of software experience and six years professionally focused on web and web3 technologies, including three years remotely at Jsgenesis. He works across Node.js, React, TypeScript, SQL, PHP and Rust, and has hands-on Substrate experience building blockchain tooling for open-source startups. Recently he’s been expanding into machine learning, data analysis and Python, blending backend systems thinking with experimentation in data-driven features. Leszek prefers autonomous, values-driven teams and seeks projects that provide a clear purpose beyond just shipping code. Based in the Wroclaw metropolitan area, he combines startup agility from self-employment with DAO and open-source culture from Joystream and Jsgenesis. A curious generalist, he often bridges traditional web stacks and emerging blockchain primitives to deliver practical, production-ready solutions.
9 years of coding experience
7 years of employment as a software developer
Technik-informatyk, Technik-informatyk at Zespół Szkół Elektrycznych OpoleEngineer's degree, Information Technology, Engineer's degree, Information Technology at Uniwersytet WSB Merito Wrocław
English
Stackoverflow
145reputation
7kreached
0answers
12questions
Github Skills (18)
substrate10
token-list10
blockchain10
smart-contracts10
rust10
tokend10
testing9
cryptography9
html6
doctrine-orm6
css6
doctrine6
jquery6
oop6
ajax6
Programming languages (3)
Github contributions (5)
Lezek123/substrate-runtime-joystream
Apr 2020 - Mar 2025
Joystream Substrate Runtime
Contributions:22 PRs, 849 pushes, 357 branches in 4 years 11 months
substraterustruntimeblockchainjoystream
Lezek123/apps
Apr 2020 - May 2022
Joystream Pioneer Application
Contributions:58 pushes, 48 branches in 2 years 1 month
joystreampioneer
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