Alexander Käßner

Berlin, Germany

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Summary

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Rockstar

🎓

Top School

Alexander Käßner is a product and interface designer with 11 years’ experience crafting elegant apps, icons and web interfaces, currently designing at Datawrapper from Berlin. He runs pxlwaves lab, a long-running indie studio producing polished iOS, Android and macOS utilities since 2010, and has shipped UX work for teams like Sketch and clients such as Tower and Letter Opener. Alexander pairs hands-on UI design with front-end development experience and a knack for small delightful details—everything from toolbar iconography to localization and image scaling. His open-source contributions include UI refinements to the popular MacDown Markdown editor, underscoring a commitment to practical, user-centered polish across platforms.

11 years of coding experience

8 years of employment as a software developer

Bachelor of Arts - BA, Interfacedesign, Bachelor of Arts - BA, Interfacedesign at Fachhochschule Potsdam

German, English

Stackoverflow

Stats

2,474reputation

205kreached

37answers

25questions

Github Skills (15)

xcode10

macos10

objective-c10

ui-design10

cocoa10

human-interface9

text-editor9

graphical-user-interface9

markdown9

user-interface9

localization7

firebase-analytics6

ios6

swift6

emoji6

Programming languages (12)

TypeScriptJavaCSSC++ShellJavaScriptObjective-CSwift

Github contributions (5)

MacDownApp/macdown

Jul 2014 - Dec 2020

Open source Markdown editor for macOS.

Role in this project:

UI Designer

Contributions:28 commits, 5 PRs, 6 pushes in 6 years 6 months

Contributions summary:Alexander's contributions focused primarily on enhancing the user interface of MacDown, a Markdown editor for macOS. They implemented new preference icons, updated toolbar layout icons, and improved labels for toolbar elements. The user also addressed button sizes, image scaling, and added localization, resulting in a more polished and user-friendly experience.

objective-cmarkdown-convertermarkdown-viewermarkdown-writermarkdown-to-html

varusgarcia/Design-History-InfoVis

Dec 2015 - Oct 2023

Contributions:1 release, 2 PRs, 77 pushes in 7 years 11 months

design-historyinfovis

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