Sebastiaan Kooijman
UI UX 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
5 years of employment as a software developer
Bachelor of Applied Science (B.A.Sc.), CMD, Bachelor of Applied Science (B.A.Sc.), CMD at Utrecht University of Applied SciencesAloysius College
Github Skills (73)
ui-theme10
sublime-text10
color-scheme10
textmate10
theme-ui10
bootstrap10
compilation10
sublime10
css10
sass10
synology9
javascript9
cdr9
custom-fields9
html9
Programming languages (6)
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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