Piotr Kuczynski
Munich, Bavaria, Germany
Summary
🤩
Rockstar🎓
Top SchoolPiotr Kuczynski is a freelance Senior Software Engineer based in Munich with over 18 years of experience in web development, architecture design and performance optimization, and 13 years of hands-on professional experience. He blends strong leadership and Agile product ownership with deep technical skills across front-end (React, TypeScript) and back-end (Node.js, Ruby) stacks, and is comfortable managing distributed international teams. An active open-source contributor, he has improved high-profile projects from DefinitelyTyped typings to UI fixes in Caprine and critical build patches in RVM, showing attention to both UX details and platform reliability. Piotr is instinctively entrepreneurial and community-driven, with a background in pedagogy and a SCRUM Product Owner certification that underpins his collaborative approach. He also brings a nuanced interest in psychology and usability, which informs his focus on slick interfaces and developer-friendly documentation.
13 years of coding experience
Bachelor’s Degree, Pedagogics, Bachelor’s Degree, Pedagogics at Technical University of SzczecinCertified Product Owner, SCRUM, Certified Product Owner, SCRUM at Certified SCRUM Product OwnerMaster’s Degree, Information Technology, Master’s Degree, Information Technology at Technical University of Szczecin, Faculty of Computer Science
English, Russian, Polish, German
Stackoverflow
699reputation
112kreached
6answers
1question
Github Skills (43)
ruby-rails10
javascript10
electron10
testing10
css10
configuration-management10
rspec10
typescript10
bash10
rails10
type-definition10
ruby10
configuration-file10
typescript-types10
configurations10
Programming languages (15)
Github contributions (5)
rubyconfig/config
Apr 2014 - Jan 2021
Easiest way to add multi-environment yaml settings to Rails, Sinatra, Padrino and other Ruby projects.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:36 releases, 32 reviews, 202 commits in 6 years 10 months
Contributions summary:Piotr contributed to the configuration and testing of the Ruby project. They added Rails 4.2.1 to the Travis CI testing process and upgraded RSpec, updating test syntax. Additional contributions include fixing broken builds, integrating CodeClimate, and refactoring file locations. The user also added deep merge options and extended documentation.
configurationsinatrarailsconfiguration-managementruby
rvm/rvm
Sep 2016 - Jul 2021
Ruby enVironment Manager (RVM)
Role in this project:Backend Developer
Backend DeveloperContributions:6 releases, 211 reviews, 379 commits in 4 years 11 months
Contributions summary:Piotr primarily contributes to the Ruby enVironment Manager (RVM) project by addressing build and compatibility issues related to various Ruby versions and external libraries. Their contributions include patching the `config.guess` file, fixing OpenSSL build problems, and incorporating improvements for the `__NR_getrandom` system call. Furthermore, the user has worked on improving internal RVM features, like `__rvm_ls`, and maintaining test suites for the project.
ruby-environmentmri-rubyrbxrailsruby
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