Wojciech Wnętrzak
Full Stack Engineer at tiramizoo GmbH
Silesian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolWojciech Wnętrzak is a Full Stack Engineer with 17 years of experience, currently focused on Ruby and JavaScript with a taste for DevOps. He has shipped features and stability improvements at companies like tiramizoo and Freeletics, and contributes to core Rails ecosystem projects including rails, rspec-rails, and well-known gems such as Paperclip and GoodJob. His open-source work shows a pragmatic focus on modernizing legacy code, improving ActiveJob and background processing, and hardening test suites—often surfacing subtle bug fixes and API refinements. Comfortable across back-end, testing, and infrastructure concerns, he balances refactors and feature work to keep systems maintainable at scale. Based in Silesia, Poland, he brings an engineering background in mechatronics and automation, which informs a methodical, systems-oriented approach to software design.
17 years of coding experience
10 years of employment as a software developer
Master of Science - MS, Mechatronics, Robotics, and Automation Engineering, Master of Science - MS, Mechatronics, Robotics, and Automation Engineering at The Silesian University of Technology
English, Polish
Stackoverflow
1,397reputation
211kreached
11answers
4questions
Github Skills (30)
ruby-rails10
matcher10
postgresql10
testing10
rspec10
rails10
ruby10
activerecord10
paperclip10
ruby-on-rails10
test-automation10
bundle9
dependency-manager9
dependency-management9
bundler9
Programming languages (17)
Github contributions (5)
jrgifford/delayed_paperclip
Feb 2016 - Aug 2017
Process your Paperclip attachments in the background with delayed_job or Resque.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:32 commits, 19 PRs, 23 pushes in 1 year 6 months
Contributions summary:Wojciech primarily contributed to the `delayed_paperclip` repository, which handles background processing for Paperclip attachments. Their commits focused on upgrading the project to work with newer Rails versions, including removing deprecated methods and adapting to Ruby 2.3. They also refactored testing infrastructure, replacing Redis with fakeredis and enabling ActiveJob testing. Furthermore, the user implemented the ability to configure the queue name for background jobs and made several bug fixes.
resquepaperclipjobattachmentsdelayed-job
thoughtbot/paperclip
Feb 2014 - Mar 2018
Easy file attachment management for ActiveRecord
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:7 commits, 5 PRs, 43 comments in 4 years 1 month
Contributions summary:Wojciech primarily contributed to bug fixes and enhancements related to file attachment validation within the Paperclip library. They fixed a bug in the `only_process` option and addressed an issue where media type spoofing validation was unnecessarily performed. The user also refactored the test suite to improve its reliability and updated the project's dependencies. They also updated the gem file to use aws-sdk-s3.
file-attachmentattachmentrailsrubyactivemodel
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