Didier Catz

Didier Catz

Co-founder & CTO, Grids in The Netherlands


I am a seasoned front-end engineer, designer and the co-founder of Grids. My passion for solving problems is driven by my belief in the power of collaboration and communication. In my free time, I enjoy jazz piano, mindfulness, writing, coding, and cooking.

Work Experience

2023 — Now

Grids lets designers display their work within minutes.

2019 — Now
Amsterdam, The Netherlands

The Catz Design Company is a design practice that helps companies and people hit the ground running through impactful digital design and intuitive user experiences.

2022 — 2023
USA ⋅ Remote

Designed and built applications for the world's leading Web3 brands

2021 — 2022
Amsterdam, The Netherlands

With Stypt we give your business the ability to easily keep track of appointments with your customers. We provide a feature rich platform which offers a streamlined booking experience for both your business and your customers.

2021 — 2022
Amsterdam, The Netherlands


Design and technology that powers digital product and brand experiences for Lakers, Airbnb, Dopper, Samsung, Cabiner, FILA, adidas, Spotify and more.

2020 — 2021
Amsterdam, The Netherlands

A digital agency from Amsterdam that helps startups and established businesses to refine, design and build their digital products.

2020 — 2020

We are a digital agency from Amsterdam. We help startups and established businesses to refine, design and build their digital products

2019 — 2020
Amsterdam, The Netherlands

A personality-first dating app

2019 — 2019
Amsterdam, The Netherlands

I was tasked with testing the experience of the then work-in-progress Close app. This includes user testing, finding any bugs, and reporting feedback on interaction and visuals.



Completely redesigned the client-facing application + accompanying design system


Contributed to the expansion of their new design system, along with new user-facing UI and industry-first features.


Designed and built the Stypt brand, MVP, and website. Stypt redefines how service workers schedule.


Designed and developed an entirely new online presence for Ten Sharp — one of the biggest bands of the 90s, known for their hit single, 'You'.

Full-service design and development



Well, that's just something.


I am pleased to share that I have once again been recognised as part of the TNW T500, a compilation of the 500 most innovative and driven individuals in the Dutch tech scene. This recognition marks my third consecutive year on the list and I am grateful for the continued support and recognition.


I have once again been be selected for the T500 by The Next Web — an award for the 500 most ambitious and innovative digital creators under the age of 26.


I'm proud to announce that I have been be selected for the T500 by The Next Web — an award for the 500 most ambitious and innovative digital creators under the age of 26!

In a time in history where every aspect of our world is being digitalised rapidly, I could not be more excited to be on the frontline of this movement. I'm honoured to have been selected, and I'm looking forward to speaking with some of the greatest minds in the Dutch digital scene about the future of tech.


2018 — 2024

A human-centered and context-sensitive Bachelor-level design education

Bachelor of Science

2012 — 2018
Higher General Secondary Education at Da Vinci College

Higher General Secondary Education of which four years bilingually at Pre-University level


Cambridge Business English Certificate Higher C1 from Cambridge Assessment


Anglia Certificate of English C1 from Chicester College



2022 — 2023
Music coach at Da Vinci College
The Netherlands

Helped higher general secondary education scholars prepare for their exam concert. This includes leading the backing band, choir pieces and helping them with song arrangement and band structure.

2019 — 2020

IAM Core is the Study Association of CMD Amsterdam. I was in charge of organizing multiple social events to keep studying fun and lighthearted.



One of my products, Bloombox, was once again presented as a great example of rewarding user experience at Solana Breakpoint, the largest conference by and for Solana.


"I have had the great pleasure of working with Didier in one of the projects. While he was officially with Airfoil as a Product Designer, Didier came onboard to help the Engineering team with frontend development and has demonstrated extensive knowledge of the subject matter; positively impacting our work and has been a steadfast partner throughout the entire project.

Will be more than happy to recommend Didier to anyone looking to hire an eclectic and capable person with extensive knowledge of engineering and design. Wishing him the very best as he pursues the next steps of his career."

— Hui Jian Cheng, Engineering Operations Manager at Airfoil


A project of mine was mentioned along with my name as an example of how great design can result into a great Web3 user experience.


Testimonial featured on the main TailwindCSS website.


In April of 2022, I was featured in Halfvet, a Dutch design newsletter curated by Jeroen Disch.


Rethinking Interactivity

Held a workshop for front-end developers about alternative ways to achieve interactivity without JavaScript.


Business Card