Janusz Mordarski
Independent Software Consultant at sudosu
Krakow, Lesser Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolJanusz Mordarski is an independent software consultant and principal engineer with over a decade of hands-on experience architecting and building web platforms, APIs, and microservices across Ruby, Python and Go. Based in Krakow, he combines deep technical craft—evident from maintaining compatibility in widely used projects like slim-rails—with strong product and delivery sensibilities including CI/CD, BCP/DR planning, and team mentoring. He has driven engineering and architecture for proptech, logistics, and high-scale consumer systems at companies such as Home Partners, XING and MotionTools, often improving legacy code and reliability for millions of users. A certified Scrum.org Master and Product Owner, Janusz blends agile leadership with practical engineering, augmenting distributed teams and upskilling developers. His academic background in HCI and bioinformatics underpins a methodical, research-informed approach to problem solving and system design. He frequently pairs rapid prototyping with long-term maintainability, prioritizing scalable, secure solutions that align with business goals.
11 years of coding experience
22 years of employment as a software developer
Master of Science - MS, Human-Computer Interaction, Informatics, Web Design and Web Development, Master of Science - MS, Human-Computer Interaction, Informatics, Web Design and Web Development at Jagiellonian University
Github Skills (7)
ruby-rails10
rails10
sprockets10
ruby10
testing9
version-control9
cicd8
Programming languages (10)
Github contributions (5)
slim-template/slim-rails
May 2016 - May 2022
Slim templates generator for Rails
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 releases, 24 reviews, 37 commits in 6 years 1 month
Contributions summary:Janusz primarily contributed to the Slim-Rails project by bumping the version number with each release. They also made modifications to the code to support new versions of Sprockets and Ruby. Furthermore, they updated the Travis and appraisal setups, removing outdated Ruby versions and integrating newer ones to expand the compatibility range of the project. These changes demonstrate the user's focus on maintaining the project and adapting it to evolving dependencies.
railsrubyslim
januszm/tiny_tds
Feb 2019 - Dec 2024
TinyTDS - Simple and fast FreeTDS bindings for Ruby using DB-Library.
Contributions:2 pushes, 2 branches in 5 years 10 months
tinytdsrubydatabasefreetdsopal
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