Didier Catz is a

Technical Designer

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Available for freelance


Didier Catz sitting in the Stedelijk Museum in Amsterdam, looking to his right, in front of a wide blue painting.

Hey—my name is Didier. I'm a designer and engineer with nearly 8 years of experience. I'm the Co-Founder of a software company called Stypt. My work revolves around designing and building fully-interactive, immersive digital experiences in the form of beautiful websites and intuitive web applications.

From September 2021 until January 2022, I'm doing a full-time design internship at Your Majesty, a Design and technology agency that powers digital product and brand experiences for the LA Lakers, Airbnb, Dopper, Samsung, Cabiner, FILA, Adidas and Spotify.

My experience includes working with clients such as Ten Sharp, De Volkskrant, Amsterdam University of Applied Sciences, Co-Founding Stypt, working as a front-end developer at software companies and agencies like Yummygum in Amsterdam, where I worked with clients across the software, music, technology and entertainment industry. I also do design and tech consultancy work for small businesses, startups and scale-ups under the name Capital83, my own freelance firm. Read about my full experience on my resume.

In my free time, I enjoy playing and improvising , meditation, writing, creative coding and cooking or eating great food. My goal is to explore all fronts of design and the role of great communication as a tool to help humanity. I'd like to leave this world in a better state than I found it in.

If you'd like to get into contact, you can contact me below.

Selected Work


What I do

I help innovative businesses small and large set a solid foot in the digital world of today.

Here are some of the services I offer.

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  • First impressions matter. What do your customers see when they use your website or product? I design visually appealing, memorable experiences in the form of websites, apps, brand identities and more.

  • What is a brand without a memorable logo? I offer logo design, completely tailored to your business and branch as part of a branding package.

  • What does your brand look like? What does your brand feel like? I create full brand identities including logotypes, typography, colors, tone of voice, and marketing material.

  • Through years of experience, I will help your business to the next level by aligning your entire style with your company values. I'll help you make your brand stand out from all the others.

  • Also known as web development, alongside design, I develop entire online presences in the form of stunning interactive websites and web applications.

  • I develop applications to optimize your business workflow and automate time-intensive processes so you and your team can spend their precious time on the work they excel at — quickly and efficiently.

  • What's a good business without equally as good stories to tell about it? I offer copywriting as part of the design process to help you tailor your content to your customers needs.