Jonas Jensen
Senior Software Engineer at Google
Aarhus Municipality, Central Denmark Region, Denmark
Summary
🤩
Rockstar🎓
Top SchoolJonas Jensen is a senior software engineer with 16 years of experience building reliable backend systems and platform tooling, currently at Google after a long tenure at Mozilla. He is a pragmatic free-software enthusiast who contributes to high-profile open-source projects like the Dart SDK, pub.dev and Mozilla DXR, often focusing on bug fixes, routing, build refinements and performance-sensitive refactors. Jonas blends deep systems and web-server expertise—improving middleware, CLI tooling and caching—with attention to maintainability, testing and reducing global state. Based in Aarhus and holding an MSc in Computer Science from Aalborg University, he also shares technical perspectives on his blog and prefers practical, incremental improvements that make large codebases more robust.
16 years of coding experience
7 years of employment as a software developer
Bachelor of Science (BSc), Computer Science, Bachelor of Science (BSc), Computer Science at Aalborg UniversityHTX, CeuHerning
Danish, English
Github Skills (30)
asynchronous10
caching10
programming-language10
javascript10
back-end-development10
routers10
async10
testing10
css10
http10
router10
api10
sdk10
web-development10
dart10
Programming languages (21)
Github contributions (5)
dart-lang/pub
Jan 2019 - Nov 2022
The pub command line tool
Role in this project:
Back-end Developer
Back-end DeveloperContributions:847 reviews, 107 commits, 247 PRs in 3 years 11 months
Contributions summary:Jonas primarily contributed to the core functionality of the pub command-line tool. They focused on resolving race conditions and fixing bugs within the testing framework. Their work involved implementing features, such as the use of token and authentication, and also added several tests including those related to pre-release behavior. The user also addressed the issue of escaping arguments and updated the codebase to follow best practices.
fluttercommand-line-tooldartpackage-manager
mozilla/dxr
Jul 2012 - Feb 2013
Powerful search for large codebases
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:37 commits in 7 months
Contributions summary:Jonas made various small fixes and improvements, primarily in the frontend and build processes. They addressed issues with virtual root configurations and made adjustments to JavaScript and CSS files. The user also refactored the build system, creating a more efficient way to generate the HTML. Additionally, they made significant changes to the templates and included a new theme.
query-languagesearch-enginegrepackcode-search
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