Arnout Kazemier
Sr. Engineer at GoDaddy
Greater Groningen Area Netherlands
Summary
🤩
Rockstar🎓
Top SchoolArnout Kazemier is a senior software engineer and entrepreneur from the Netherlands with 16 years building scalable, real-time Node.js systems and leading engineering teams. He founded Observe.it and runs consultancy 3rd-Eden while driving real-time features as a core contributor to Socket.IO and other high-profile Node projects like ws and memcached. Originally trained as a multimedia designer, he moved into front-end JavaScript early (Adobe Spry community lead) and was an early adopter of server-side JavaScript, using Node since its 0.1.x days and winning Node Knockout with Observe.it. His open-source contributions span full-stack areas—WebSocket fallbacks, URL parsing, event emitter performance, and tooling like pre-commit hooks—demonstrating attention to both API design and operational robustness. Based in the Greater Groningen Area, he blends hands-on engineering with consultancy experience helping teams deploy highly available, production-ready real-time applications. A less obvious strength is his knack for shrinking client bundles and backward-compatible APIs, shown by work that modernized browser fallbacks and reduced client footprint.
16 years of coding experience
7 years of employment as a software developer
VMBO, VMBO at Zernike CollegeMBO, MBO at Grafisch Lyceum Zwolle
English, German, Dutch
Github Skills (34)
compatible10
javascript10
npm10
user-agent10
scripting10
testing10
bash10
websocket10
url-parsing10
browser-support10
git-hooks10
regular-expression10
automation10
script10
websockets-client10
Programming languages (13)
Github contributions (5)
3rd-Eden/useragent
May 2010 - May 2019
Useragent parser for Node.js, ported from browserscope.org
Role in this project:
Back-end Developer
Back-end DeveloperContributions:203 commits, 20 PRs, 35 pushes in 9 years 2 months
Contributions summary:Arnout appears to be primarily responsible for implementing core functionality related to user agent parsing within the Node.js project. Their initial contribution involved drafting the user agent parser, drawing inspiration from browserscope.org. They further refactored the code and added a test suite for the parser. The user also added support for cURL and Wget user agents.
nodejsparseruser-agent
observing/thor
Apr 2013 - Feb 2017
The WebSocket god of thunder
Role in this project:Back-end Developer
Back-end DeveloperContributions:28 commits, 4 PRs, 3 pushes in 3 years 10 months
Contributions summary:Arnout primarily worked on implementing WebSocket functionality within the "thor" repository, which is described as a WebSocket server. Their contributions include developing the core logic for spawning WebSocket connections, handling message transmission, and implementing metrics collection. The user also addressed minor bug fixes and enhanced the system by adding support for different protocols and binary data transmission. These changes improved the server's features, performance, and diagnostic capabilities.
websocket
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