Sefrijn Langen
Ecstatic Dance DJ
Utrecht Area Netherlands
Summary
👤
Senior🎓
Top SchoolSefrijn Langen is a multidisciplinary software developer and classically trained musician based in Utrecht with 11 years of experience building user-focused web apps and interactive installations. He blends frontend expertise in React and JavaScript with a background in interaction design and Headless CMS work, having delivered civic portals, hotel signage systems and creative public experiences. Comfortable working freelance and in teams, he has contributed to open-source-driven government projects and fast-moving product teams, translating complex workflows into intuitive interfaces. Outside of code he DJes ecstatic dance events across Europe, bringing improvisational musical sensibility to how he approaches product rhythm and user experience. This unusual mix of technical craft, design-led thinking and live-performance timing makes him adept at creating engaging, playful digital products that invite people to interact.
11 years of coding experience
18 years of employment as a software developer
BSc, Industrial Design Engineering, BSc, Industrial Design Engineering at University of Twente
English, Dutch, German
Github Skills (37)
react8
android8
react-native7
javascript7
ios7
typescript7
frontend7
mobile5
self-signed5
carplay5
expo5
signed4
wordpress-plugin3
web-framework3
weex3
Programming languages (4)
Github contributions (5)
sefrijn/asana-all-workspaces-overview
Mar 2017 - Jun 2019
Contributions:12 commits, 10 pushes, 1 branch in 2 years 3 months
sefrijn/traktor-library-manager
Oct 2021 - May 2022
Traktor Library Management
Contributions:93 commits, 1 PR, 4 pushes in 7 months
library-managementtraktor-librarytraktor
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