Ludvig Janiuk
Climate Activist
Stockholm, Sweden
Summary
🤩
Rockstar🎓
Top SchoolLudvig Janiuk is a software engineer and climate activist based in Stockholm with 11 years of experience blending hands-on engineering, technical writing, and grassroots organizing to drive impact. He has worked on JVM-focused projects at Oracle (including prototyping heap snapshotting to speed startup) and contributed documentation fixes to the prominent OpenJDK repository, demonstrating care for developer-facing details and accessibility. Ludvig’s full-stack and testing work—illustrated by building Mocha/Chai test suites and front-end improvements for a KTH project—shows practical strengths in web interactivity and quality engineering. He has taught and developed university courses, honing clear communication and pedagogy alongside technical depth. Now self-employed, he leverages this combination of engineering rigor and community organizing to pressure for just climate policy—an unusual pairing that helps translate technical literacy into effective advocacy.
11 years of coding experience
6 years of employment as a software developer
Natural Sciences, Natural Sciences at Enskilda GymnasietComputer Science, Computer Science at KTH Royal Institute of Technology
English, Swedish, Polish, Spanish
Github Skills (10)
html10
javas10
mochajs10
javascript10
chai10
java10
documentation10
testing10
bootstrap9
bootstra9
Programming languages (18)
Github contributions (5)
kth-csc-iprog/dinnerplanner-html
Aug 2019 - Oct 2019
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:60 commits, 1 PR, 42 pushes in 2 months
Contributions summary:Ludvig primarily contributed to the front-end and testing aspects of the project. They added a testing suite using Mocha and Chai, writing tests for the DinnerModel. These tests covered functionalities such as setting the number of guests, filtering dishes, and adding/removing dishes from the menu. Additionally, the user updated the index.html file to include Bootstrap and the testing framework, while also refactoring and improving the DinnerModel class.
openjdk/jdk
Jun 2021 - Feb 2025
JDK main-line development https://openjdk.org/projects/jdk
Role in this project:Technical Writer
Technical WriterContributions:20 reviews, 31 PRs, 102 comments in 3 years 8 months
Contributions summary:Ludvig primarily contributed to documentation improvements within the `openjdk/jdk` repository. The commits focused on correcting documentation issues, such as missing table headers in API documentation, fixing accessibility issues in the `Inet6Address` documentation, and improving package summaries. These changes involved modifying JavaDoc comments and HTML formatting within the repository.
openjdkjavajvmjdk
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