Kenn Hartwig Web Development

Hi there, I'm Kenn.

I am an international working full-stack web developer, based in Berlin. I wrote my first website in 1998 at the age of 11 (using notepad.exe). Since 2008 I do commercial work as a web designer and developer.

I do solo gigs but love to work with talented teams. My clients include architects, artists, researchers, filmmakers, designers, musicians and music labels as well as a power plant and a brewery.

Get in contact

phone: +49 176 23567404

Fields of work

I build websites and web apps with Contao CMS. I know my way around Wordpress and also like to deploy static websites. I am pretty good at CSS – I tend to write stuff from hand and make every website look unique instead of relying on templates and frameworks. I can take care of your design / UX / UI, but prefer to work in team with designers.

Having a deep understanding of how the net works, I offer consulting to tackle potential issues before jumping into actual coding.

Stuff I work with: Responsive Webdesign / Javascript (Vanilla) / Node.js / Sass / PostCSS / PHP / Composer / MySQL / MariaDB / Apache / Nginx / on-site SEO / Webshops / Isotope E-Commerce / Shopify / VS Code / Vim / Figma / Photoshop / Illustrator / Indesign. I recently switched from Windows to Linux for development and everything that is not Adobe.


I am an active musician playing music somewhere between Experimental Jazz and Krautrock. I play bass (studied double bass at HfMT Cologne) and electronics, mostly Nintendo Gameboys which I modded to use them as instruments. Check out my bands C.A.R. and Das Ende Der Liebe.

Projects (selection)


Website for London-based IDK, a team of architects, design researchers and social engagers.

Tobias Hoffmann
Website for jazz guitarist Tobias Hoffmann.


Web app for presentation of research about the environmental and social harms brought about by digital technology and its infrastructures.

Jack Hems
Website for Jack Hems, photographer based in London, UK, specialising in the documentation of artworks, exhibitions and products.


Planet Akwa
Being a non-profit organisation, *akʷā seeks to bring value back to music by producing, publishing and promoting new music and visual works.

Diana Pfammatter
Portfolio website for swiss photographer Diana Pfammatter.

Okra is a multi-disciplinary collective based in Lonson specialising in architecture, urban research and educational outreach.

Blog / event calendar / record catalogue for improvised music collective IMPAKT


Emily Richardson
Portfolio and archive for artist filmmaker and researcher Emily Richardson

Pablo Held
Website for jazz pianist Pablo Held

Studio 2020
Presentation of work of architectural practice Studio 2020 from Berlin, Germany