UI | Interaction | Digital designer

Martijn van Sas

My toolkit

As a T-shaped digital design specialist,
I help companies to improve their online appearances.

UX/UI screen design

Making your project lean and easy to do tasks on. I use exercises with the involved people that helps to improve the user experience and conversion.

Design Systems

A design system helps your team improve product quality. I can help your company to build a solid design system and put it in a shippable style guide for developers.


I use both rapid and high fidelity interactive prototypes to get the most actionable UI design feedback from stakeholders, fellow designers and actual users.

Online Campaigns

I have over a decade experience in generating ideas for activation campaigns, display advertisement, social media and emails for e-commerce teams. More examples can be found here.

Recent Work

I design digital experiences with your user in mind

ABN AMRO | Alert & Check | watchOS

Wearable capaign amination

Alert & Check is ABN AMRO’s first watchOS app. With the 2015 unveiling of the Apple Watch the bank released this app during the introduction. I've created the animation which was used for a pitch to Apple and designed the introduction campaign. | Megamenu

Interaction Design

To improve the usability of the website, I did research with the inhouse callcenter to see where users find themselves trapped on the website. With the found data, I've created userjourneys and put the result in a dropdown megamenu. It consists now a better distinction between navigation to pages and utilities, such as a searchbar and a login button. The menu has now also a contextual space for cross sell opportunities.

ABN AMRO | webdesign propositions

Campaigns, visual design

Visual design for all product groups and Internet Bankieren login environment.

Philips | Digital Hub

UX, UI & Development

Philips Digital HUB, the tech companies new global collaboration network. I have introduced UX methodologies e.g. card sorting and panel-user tests in order to optimize existing templates and design new ones.

Commisioning companies

Over a decade's work experience in digital design for international marketleaders

Great things happen over coffee

I'm currently looking forward to new opportunities. Ping me if you have any.

Email me at: