Martijn van de Zuidwind

A designer doing sites, apps & such

for inquiries

for that connect

Curriculum Vitae
if you’re into PDFs

Eurico Sá Fernandes and Jori Regter did the code


A phone screen with a Parta interface visible on screen. Next to the phone are two floating cards with illustrations and text in them showing actions participants could take inside the app. Also next to the phone a sentence states 'Participate in topics where you want to make a difference.'

As a collective, we are able to find outcomes and solutions together. Parta facilitates informed, focussed decision making to support and broaden democratic processes. It allows everyone to contribute to ideas and decisions on various topics.

I redesigned the app over the summer in 2020 and joined the team as their first designer later that same year. We're currently iterating on the product through learnings of usage by organisations and participants alike.

A phone interface of parta showing two numbered cards underneath each other, next to a tablet screen displaying the main navigation.

By using a timeline as an interface concept, participants are able to monitor and interact with decision-making processes.

A cover card with branding elements, the logo and the tagline stating 'we make better decisions together'.

Brand designer Hannah van der Mijle helped us out by creating a fresh identity for an international audience. After she created the foundations, I picked up where she left off.

Together with the devs, I created a strong design system within which we can review every scenario and user flow we can come up with.

A screenshot of a usability test: three people are visible next to an interface.

We like to know stuff for sure. Usability testing helps with that. Founder Lonneke and I tested multiple hypotheses within our first design.

A couple sketches of mobile interfaces. Martijn and Nikki are visible in a small window from video conference software.

Together with interaction designer Nikki Buitendijk, I improved the connection between the interfaces and the mental models they're based on.

Sjoerd and Martijn are sitting next to each other. Sjoerd has a tablet used for drawing in front of him with a range of illustrations visible on screen. Martijn has a laptop in front of him showing interfaces with illustrations in them.

Sjoerd van Leeuwen created some nifty illustrations and pictograms. Since we want to reach citizens from all walks of life, it's crucial to have the entry level be as low as it can possibly be. Visual recognition through imagery can help with that. We spent the hottest day of the year optimising colours and scannability.

Core team

Cas Bertrams

Mathijs Kemp

Lonneke Dikmans

Lucien van der Plaats

Ronald van Luttikhuizen

Martijn van de Zuidwind


Web app + native apps all done by the team at Vennster





Visual design

Design system

Expansion of identity

Digital strategy consultation

Interaction concepts & design


UX writing

Social media assets


UX strategy

Usability testing

Information structure


Sjoerd van Leeuwen

Identity design

Hannah van der Mijle

Extra shout out

Tom Kölker for the naming workshop

Jimme Bakker for the identity explorations

Nikki Buitendijk for the very early interaction design sessions

Smaller bits

Eurofiber – 2021

A collection of components designed for the new Eurofiber.

Eurofiber has been a provider of industry-leading digital infrastructure since 2000. Together with the crew at iO, I redesigned their site.

An animation showing the mobile menu opening up to reveal a multitude of links to solution and product pages. At the end of the animation, the menu is closed with a button on the bottom of the phone screen to form a loop.

Eurofiber has many products, which I wanted to present elegantly. No hamburger buttons. Through the new mobile menu, users are able to quickly orient around their many offerings.

An animation showing an overly large cursor moving inside the the frame to click on a card.

I see you looking at that cursor, thinking, "it can't be that big, right?". And you're correct about that. It's fake. But the funnel supporting different sized organisations isn't.

Kapitaal — 2020

Thumbnail showing Kapitaal's homepage.

They said Helvetica, black and white. We gave them Helvetica, black and white.

Thumbnail showing the navigation for Kapitaal's website.

Through information architecture, we kept the navigation structure simple as pie. Or hamburger, in this case. Sorry, designer jokes.

Thumbnail showing different button labels.

Scrolling through pages that contain buttons makes labels act funny. Because, why not?

It is always fun to pretend to work with Ramon & Carlien.
Project with Carlien Peijsel & Ramon Goedvree. Development by Rik Frieling.

No Seat at the table — 2020

Thumbnail showing a title card explaining No Seat at the Table.

No Seat at the Table is an online platform to exchange stories of gentrification, the housing crisis and the need for spatial justice.

The original bird illustration is created by Rajab Eryigit.

Thumbnail showing the opening animation for the website.

For this site, we created some fancy shmancy intro animations and different ways to discover stories of gentrification.

Thumbnail showing a mobile map-view.

Do you see that? No hamburger menu! On a mobile screen? No way. Just. Wow!

Thumbnail showing Minem pointing at a monitor that displays the website.

I like to take the time with clients to nail down certain steps in the design process. Minem and I are going through a review here.

Project with Minem Sezgin. Development by Rik Frieling.

Eneco — 2018

Thumbnail showing multiple designs for the Eneco app.

The Eneco app enables consumers to influence their energy bill by offering data on their power usage.

A general menu in the Eneco app

During my time we utilised click data, interviews and surveys to simplify the interface and user flows. We improved the menu through a card sort.

Thumbnail showing a close up of a stepper and a feedback message.

By following the Jobs to be Done model, we focussed most of the redesigned interactions around the goals users have.

Thumbnail showing part of the sprint team during a usability test.

We also realised a bigger shake-up of the app through a design sprint.

Project with Dept & Eneco.

HR Projectadvies — 2018

As an interim project manager Erik Jan helps large corporates go through organizational changes. The renewed site expresses who he is: an expert with an approach that connects people.

Thumbnail showing an illustrated character drawing a checkbox.

We rewrote and restructured Erik Jan's previous website using a priority guide. We also used the guide to build wireframes. Not that that's related to this guy.

Thumbnail showing 4 combined illustrations.

When in doubt, add more illustrations. In this case, we created some abstract ones related to typical HR practices and skills.

Nick, chilling on the a museum floor.

I couldn't find a photo of Nick and me working on this project, so here's a photo of Nick in Voorlinden.
Project with Erik Jan van Dalen. Design & development with Nick Lutgerhorst.


Also martijn
Also, also martijn

I'm Martijn, a digital designer from Utrecht (NL) with around ⑦ years of professional experience.

While I focus on tinkering with interfaces and applying UX methods, I appreciate being involved in branding as well.


Designer at Parta – an app for decision-making processes

Lecturer at Utrecht University of Applied Sciences

Freelance designer – helping out friends and organisations


Digital designer at iO

Digital product designer at Hike One

Digital product designer through secondment at SchaalX

Designer at Studio Airport

Collaboration is essential to create relevant work. In my freelance practice, I experiment with different approaches of collaboration, be it with clients, specialists in related fields and designers new to the game.

I’ve developed a strong interest in socially driven projects by being involved in ones such as restaurant Syr and Parta. It's also why I started lecturing at Communication & Multimedia Design in Utrecht. Are you working on a socially driven project? I’m always open to learn more. ☻

Some clients I worked for

University of the Arts Utrecht

Dutch Ministry of Culture, Education and Science

Into the Great Wide Open

Amsterdam Art Council

Emergence Magazine

White Ribbon UK

Restaurant Syr





Main skills

Interaction design

Visual design


Also fine at

Concept development

Usability testing

Design Thinking

Design systems

User research







I play around in

Final Cut Pro X

Affinity’s suite

Adobe’s suite







Jira (with a face like this: 😤)


GT Zirkon by Grilli Type