Jonathan Vollebregt
Leidschendam, South Holland, Netherlands
Summary
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RockstarJonathan Vollebregt is a pragmatic PHP developer with 12 years of experience building and maintaining web applications and developer tools, including professional work from 2008–2022. He maintains a widely used PHP utility that attracts hundreds of thousands of downloads monthly and contributes to high-profile open-source projects like Adminer and Doctrine DBAL, improving both UI/UX and core database behavior. Comfortable across C, PHP, SQL and JavaScript, he combines backend attention to correctness (SQL abstraction, query criteria) with practical frontend fixes that improve usability. A long-time Linux user and open-source collaborator based in the Netherlands, he is known for thoughtful refactors, bug fixes, and small but impactful enhancements—like persisting UI filters and improving edit interactions—that boost developer productivity.
12 years of coding experience
Github Skills (20)
debugging10
debug10
javascript10
mysql10
doctrine10
databases10
abstraction10
abstraction-layer10
dbal10
php10
sql10
data-abstraction10
database10
css9
ui-design8
Programming languages (11)
Github contributions (5)
kint-php/kint
Nov 2015 - Jan 2023
Kint - Advanced PHP dumper
Role in this project:
Back-end Developer
Back-end DeveloperContributions:35 releases, 23 reviews, 680 commits in 7 years 2 months
Contributions summary:Jonathan focused on improving the Kint PHP advanced dumper. Their commits show improvements to how the tool handles code evaluated through eval and improvements to display variable access paths. The commits also involved changes to the styling, implementing different style options, and bug fixes.
debugging-toolphpmodern-phpdebuggingdebug
vrana/adminer
Aug 2014 - Sep 2017
Database management in a single PHP file
Role in this project:Back-end Developer & UI Designer
Back-end Developer & UI DesignerContributions:6 commits, 5 PRs, 8 comments in 3 years 1 month
Contributions summary:Jonathan primarily contributed to the Adminer database management tool by addressing UI and usability issues. They fixed styling problems in the Haeckel theme and implemented improvements to the AdminerTablesFilter plugin. The user added functionality to persist the filter value and changed the output to use `<li>` elements. Additionally, they added Javascript functionality for editing by implementing move row functionality.
mysqlphpsqlmysqlisqlite
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