Sebastiaan Kooijman
Product Designer at Mett
Utrecht, Utrecht, Netherlands
Summary
👤
Senior🎓
Top SchoolSebastiaan Kooijman is a seasoned UI/UX designer and entrepreneur with 12 years of experience crafting accessible, user-centered digital products from Utrecht. As co-founder and creative director of Brthrs Agency and several startups (Scheduled, Digitally Accessible, BRTHRS GROUP), he blends hands-on design with product strategy to build inclusive web and mobile experiences. Currently designing at Mett, he focuses on making interfaces both beautiful and usable for people with disabilities—a thread that runs through his agency work and advocacy. His background in applied media design (CMD) and early tinkering with hardware informs a practical, maker mindset that values iterative prototyping and real-world impact. He also launches and scales small product ventures, from messaging tools to media companies, showing a knack for turning ideas into sustainable businesses. Outside work he keeps the team culture lively—Friday beers and karaoke are part of how he fosters creative collaboration.
12 years of coding experience
18 years of employment as a software developer
Bachelor of Applied Science (B.A.Sc.), CMD, Bachelor of Applied Science (B.A.Sc.), CMD at HU University of Applied Sciences Utrecht (Hogeschool Utrecht)
Github Skills (49)
bootstrap10
sublime-text10
color-scheme10
ui-theme10
metaboxes9
javascript9
css9
wordpress9
sass9
html9
cmb28
php8
gmail8
boxee8
nas8
Programming languages (7)
Github contributions (5)
sebask/dsm-vagrant-box
Apr 2015 - Feb 2019
Contributions:4 commits, 1 PR, 2 pushes in 3 years 10 months
brthrs/scrum-poker-cards
Feb 2018 - May 2024
Contributions:3 pushes, 2 issues in 6 years 4 months
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