Julian Ellehauge
Staff Software Engineer at Chainguard
Copenhagen, Capital Region of Denmark
Summary
🤩
Rockstar🎓
Top SchoolJulian Ellehauge is a Staff Software Engineer with 17 years of experience, currently at Chainguard securing and validating JavaScript/npm libraries. Previously at GitHub he led a risky, incident-free rewrite of the npm metadata datastore and search backend, cutting p99.9 publish times from 90s to 20s, saving $250k/year, and improving search reindex latency from 4 hours to 3 minutes. Based in Copenhagen, he pairs deep frontend and platform expertise—React, Node.js, Docker, Kubernetes—with a strong track record in reducing operational complexity and improving SLOs. He also runs a long-standing freelance studio, Nørderiet, demonstrating continual hands-on delivery across web and mobile stacks. An analytical tinkerer by training (MSc-level coursework in Computer Science and Game Technology), he blends pragmatic engineering with systems-level thinking to secure and scale large package ecosystems.
17 years of coding experience
13 years of employment as a software developer
MSc level course Computer Science, MSc level course Computer Science at Københavns Universitet - University of CopenhagenMSc level courses Game Technology, MSc level courses Game Technology at IT-Universitetet i KøbenhavnStx. Mathematics Physics Chemistry., Stx. Mathematics Physics Chemistry. at Rysensteen GymnasiumTechnical University of DenmarkProgrammer, Programmer at The National Academy of Digital, Interactive Entertainment (DADIU)
Danish, English
Stackoverflow
1,770reputation
262kreached
12answers
10questions
css
top-5%
npm
top-5%
webpack
top-5%
javascript
top-5%
html
top-5%
Github Skills (168)
python10
testing10
command-line-interface10
javascript10
locale10
cli10
npm-cli10
router10
nodejs10
package-manager10
npm10
facebook10
ansible9
html9
parser9
Programming languages (12)
Github contributions (5)
jumoel/mario-astar-robinbaumgarten
Nov 2013 - Feb 2018
Contributions:5 commits, 1 push, 1 comment in 4 years 4 months
jumoel/jumoel
Jul 2020 - Mar 2025
Contributions:2 pushes, 1 branch in 4 years 8 months
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