Concept. Strategy. Design.

Hi I’m Stefanie Kegel aka guerillagirl. I do design work for the digital age.

My strength is to develop conceptual and visual directions such as interactive design concepts or layouts and also evaluate existing digital products to improve them. Having a strong focus on design for interactive things means helping to shape how your business is perceived in the digital age. (But sometimes my alter ego wins and I do weird, non-digital things such as poster or flyer designs)

I work with commercial clients, cultural, political and educational institutions & organisations, agencies and artists.

Got an enquiry or an idea that you want to talk about? Say hello or take a look at my PDF Portfolio here


Posters and Flyers for an indie music clubnight


Early flyer design for a 60s beat /space age party series at the S.U.I.T.E Mannheim



Press & Publications

‘Stefanie Kegel on using social psychology in interaction design’ Interview with Lauren Kelly from Form for thought, 04.2016.

‘More Than Just Pretty: A Guide To UX Design For Startups’, Interview with Charmaine Li for Factory Berlin, 04.2016

‘Portfolio of the month’, PAGE magazine Issue, 07.2014 (print & online)

‘Flatterhaft beständig’, Interview zum Thema Freelancing, weave Magazine, Ausgabe 11.2012

‘Wireframes und Prototyping im Interfacedesign’, webstandardsmagazin, 03.2009
PDF download


‘Intercultural Aspects in Interface Design’ [upfront meetup Berlin, 2016]

‘Softwarebasierte Barrieren im Designprozess einreißen mit Sketch App’ Artikel im Studio Blog [UIG Frühjahrstagung, 2016 – Geekettez Team Session]

‘Ready or not? No UI’
Vom Verschwinden des Graphical User Interfaces. [Usability Kongress Frankfurt, 2013, Webmontag Mannheim, 2013, Geekettez Team Session]

‘User Experience, das Fundament’
[World Usability Day, 2012 Mannheim, Geekettez Team Session plus Workshop]

‘Storytelling as a Design Tool’ [Agile Design Camp, Hamburg 2011]

‘It’s all about communication. HCI made easy’ Wie schaffen wir es aus puren control panels Systeme mit etwas mehr Persönlichkeit zu machen? [Webmontag Mannheim, 2011]