Kai Krakow
IT Support, Development And Administration
Bremerhaven, Free Hanseatic City of Bremen, Germany
Summary
🤩
Rockstar🎓
Top SchoolKai Krakow is an experienced IT support, development, and administration professional with 26 years in server management, capacity planning, and helpdesk operations at netactive in Bremerhaven. He blends deep Linux and Windows expertise with practical network management and performance optimization skills, demonstrated by meaningful open-source contributions to projects like FeralInteractive/gamemode and the xpadneo driver where he improved scheduling, IO priority, and controller rumble behavior. Kai routinely refactors and modularizes systems, builds tooling for automated checks, and drives reliable builds and logging improvements—bringing developer-grade rigor to production operations. With a formal informatics background from the University of Bremen and a long history of freelance and media-sector work, he pairs hands-on coding (Ruby on Rails and systems-level work) with operational discipline. A less obvious strength is his knack for incremental, low-risk optimizations that noticeably boost performance and user experience across both server and device software.
26 years of coding experience
Informatik, Informatik at University of Bremen
German, English
Stackoverflow
5,891reputation
799kreached
128answers
28questions
ruby
top-5%
ruby-on-rails
top-5%
Github Skills (22)
system-programming10
configuration-management10
linux10
c1110
c1710
ruby9
c-programming9
bash9
performance-optimization9
gamepad9
ruby-on-rails9
script9
git8
devops8
passenger6
Programming languages (15)
Github contributions (5)
atar-axis/xpadneo
Mar 2018 - Nov 2022
Advanced Linux Driver for Xbox One Wireless Controller (shipped with Xbox One S)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:21 releases, 72 reviews, 474 commits in 4 years 9 months
Contributions summary:Kai primarily focused on improving the xpadneo Linux driver for the Xbox One S controller. Their work involved refactoring the rumble system, addressing timing issues with the rumble protocol, and introducing new trigger rumble modes for a better user experience. Furthermore, the user implemented changes to the udev rules and made modifications to the input mappings to improve the SDL2 button mappings, ensuring the controller functions correctly in a variety of games and environments. They also added support for the new XBE2 v2 packet format and made adjustments to the code base to support GuliKit KingKong2 PRO controllers.
linux-drivergamepadxboxxpadneohid
FeralInteractive/gamemode
May 2018 - Oct 2019
Optimise Linux system performance on demand
Role in this project:Backend & DevOps Engineer
Backend & DevOps EngineerContributions:2 reviews, 41 commits, 9 PRs in 1 year 4 months
Contributions summary:Kai primarily focused on enhancing the Linux system performance optimization capabilities of the repository. They implemented features related to soft real-time scheduling (SCHED_ISO) and IO priority, introducing configuration options for these features. They also developed tooling for automated format checks and improved logging and error handling related to scheduling configurations. Furthermore, the user refactored and modularized various components of the project and improved build processes.
on-demandoptimisevideogameslinuxdemand
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