Jonathan Tron
Managing Partner at Openhood sarl
Greater Metz Area France
Summary
🤩
Rockstar🎓
Top SchoolJonathan Tron is a managing partner and seasoned software engineer with 17 years of experience building and operating web and automation platforms across startups and enterprise teams in France. He blends hands-on expertise in Elixir, Ruby, PHP and Cocoa with strong CI, testing and deployment practice—designing systems that prioritize reliability and maintainability. Jonathan has led engineering and architecture efforts (CTO, IT Architect, Senior Developer) and now runs Openhood, applying that operational focus to product delivery and hosting automation. An active open-source contributor, he improved spreadsheet generation in the popular Axlsx library by adding data-type support and polishing formatting and docs, showing attention to both edge cases and user experience. With a Master in HCI, he brings a user-centered perspective to backend-heavy systems, often surfacing subtle UX implications in technical designs.
17 years of coding experience
12 years of employment as a software developer
Master, HCI, Master, HCI at Université de Metz
English, French
Github Skills (4)
ruby10
datatypes10
testing9
documentation8
Programming languages (12)
Github contributions (5)
randym/axlsx
Feb 2012 - Sep 2015
xlsx generation with charts, images, automated column width, customizable styles and full schema validation. Axlsx excels at helping you generate beautiful Office Open XML Spreadsheet documents without having to understand the entire ECMA specification. Check out the README for some examples of how easy it is. Best of all, you can validate your xlsx file before serialization so you know for sure that anything generated is going to load on your client's machine.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:48 commits, 15 PRs, 20 pushes in 3 years 7 months
Contributions summary:Jonathan primarily focused on enhancing the Axlsx library's functionality related to cell formatting and data types. They addressed issues by adding support for boolean and date data types, ensuring correct application of cell borders, and fixing a dimension calculation typo. Their contributions also involved refining the documentation and examples to accurately reflect the implemented features. This work improved the library's ability to generate more complex and accurate spreadsheet documents.
xlsxwidthbest-ofoffice-open-xmlvalidate
TalentBox/delayed_job_sequel
Feb 2012 - Nov 2017
Contributions:6 releases, 58 commits, 4 PRs in 5 years 10 months
sequeljobbackenddelayed-jobdelayed
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