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 (115)
testing10
command-line-interface10
couchdb10
javascript10
npm-cli10
nano10
nodejs10
minimizer10
npm10
facebook10
ansible9
shipit9
ai9
html9
uglify9
Programming languages (15)
Github contributions (5)
jumoel/soten
Nov 2024 - Mar 2026
notes 🔀 soten. Get it? 😄
Contributions:52 PRs, 161 pushes, 58 branches in 1 year 4 months
note-takingnotesnotes-appvimwiki
jumoel/adventofcode
Dec 2019 - May 2025
Contributions:19 PRs, 145 pushes, 15 branches in 5 years 6 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.