design & usability engineering

for web & mobile interfaces

With over 15 years design experience

I create new digital products and creative vision for your project or your whole company. I have an unique blend of design and technology background. Excellent usability and clarity are my top priorities when designing interactive interfaces. 

Know How


Standardised methods and processes allow me to optimise the user-friendliness of your system. Early and ongoing focus on your users enhances user experience and distinctly decreases project risks.

Web & Mobile

To get a perfect solution for your needs I always use the latest technologies and trends. Your online presence will be tailored to your target groups, be easy to understand and mobile responsive.


Complying with the old proverb: A picture is worth a thousand words. The controlled interplay of light and shadow, depth of field and perspectives to emphasise important details and to gain new impressions.

About me

I am state certified designer for digital & print media and graduated engineer for media technology and imaging sciences. For more than fifteen years I have been working in the IT world as UX und Interaction Designer.

I love to discover new technologies and the latest trends. I gladly use Git, HTML, CSS, JavaScript and jQuery as well as different frameworks with graphical UI for click prototypes and web sites. Of course I master the Adobe Products.

I have expertise in Requirements Analysis, Qualitative and Empirical User Research, User Centered Design, Personas, Scenarios, Use Cases, Heuristic Evaluation and Usability Tests.

I live in beautiful Potsdam and work in Berlin and the surrounding areas. 

Sounds interesting?

Please contact me!

Katharina Ehrhardt, Große Weinmeisterstr. 63 B, 14469 Potsdam

All links and external references: 
Katharina Ehrhardt has no influence on the content and design of external internet pages.

Data protection:
Your contact data will be used solely for the purpose of answering your enquiry. I don't share your datas without your permission.