Tobias Dillmann
Senior Software Developer at OpenProject | open source project management software
Herzogenrath, North Rhine-Westphalia, Germany
Summary
🤩
Rockstar🎓
Top SchoolTobias Dillmann is a Senior Software Developer with a decade of experience building full-stack and backend systems, currently contributing to the leading open-source project management platform OpenProject. Grounded in Ruby and a test-driven approach, he excels at turning messy requirements into clean, documented, maintainable code and has improved both UI and backend aspects of widely used projects. His background spans IoT backends with Kotlin/Spring, Elixir, and Node.js, plus hands-on work on a modular insurance pricing engine and cross-platform streaming apps. A pragmatic team leader-turned-engineer, he has managed and mentored teams of up to 11 while preferring to stay hands-on with engineering challenges. Outside work he pursues physical hobbies like archery, is obsessed with mechanical keyboards, and refuses to build ad-driven products that monetize user data.
10 years of coding experience
14 years of employment as a software developer
Staatl. geprĂĽfter Informatiker Multimedia, Staatl. geprĂĽfter Informatiker Multimedia at b.i.b. International college
German, English, Japanese, Dutch
Github Skills (11)
ruby-rails10
fullstack-development10
rails10
full-stack10
ruby10
front-end-development9
user-interface9
javascript8
testing7
html7
css6
Programming languages (3)
Github contributions (5)
opf/openproject
Sep 2024 - Apr 2025
OpenProject is the leading open source project management software.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:75 reviews, 64 PRs, 362 pushes in 7 months
Contributions summary:Tobias primarily focused on improving the user interface and back-end functionality of the OpenProject software. Their contributions included replacing methods in the settings helper, improving readability, fixing typos in parameter names, and implementing pagination in the project list. Additionally, they modified UI elements and incorporated changes to user-related features, as well as showing and hiding elements in a calendar-based UI. They also made changes to various component files within the project.
taigascrumbcfproject-planningruby
EinLama/advent-of-code
Dec 2023 - Dec 2024
Contributions:14 pushes in 1 year
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