Jelle Kralt
Managing Director & Partner - Lemonshark Amsterdam at Lemonshark Cybersecurity
Sassenheim, South Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolJelle Kralt is a seasoned technology leader and Managing Director with 12+ years of professional experience evolving from front-end maker to solution architect and engineering manager. He combines deep hands-on expertise in JavaScript, DevOps culture, content management and web security with strategic architecture and people leadership roles at KLM, Rabobank and CODEZILLA. Known for turning complex technical problems into practical solutions, he led BlueLabs innovation at KLM and now guides cybersecurity product and services at Lemonshark Amsterdam. His open-source work includes usability-focused front-end improvements—like enhancements to a responsive tabs jQuery plugin—highlighting a long-standing focus on pragmatic, user-centered engineering. Based in the Netherlands, he brings an uncommon blend of server, network and client-side experience dating back to a hobbyist web developer in 1997. Colleagues describe him as a builder who scales teams and tooling as reliably as he ships features.
12 years of coding experience
17 years of employment as a software developer
Rijnlands Lyceum SassenheimBSc Computer Science, BSc Computer Science at Hogeschool LeidenICT Academy, ICT Academy at ROC LeidenIT Media Webmaster, IT Media Webmaster at Grafisch Lyceum Rotterdam
Dutch, English, German
Stackoverflow
980reputation
417kreached
15answers
2questions
ajax
top-5%
Github Skills (16)
bottom-tabs10
responsive-design10
tabstrip10
javascript10
jquery10
accordion10
tablist10
ajax9
jquery-ui6
php6
coordinates6
regex6
coldfusion6
angularjs6
css4
Programming languages (8)
Github contributions (5)
jellekralt/Responsive-Tabs
Jul 2013 - Mar 2018
Responsive Tabs is a jQuery plugin that provides responsive tab functionality. The tabs transform to an accordion when it reaches a CSS breakpoint. You can use this plugin as a solution for displaying tabs elegantly on desktop, tablet and mobile.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:10 releases, 175 commits, 21 PRs in 4 years 8 months
Contributions summary:Jelle primarily contributed to enhancing the user interface by adding a minified version of the JavaScript file, changing the structure of the demo index file, and adding a rotation option to the responsive tabs. They also added the functionality to open tabs based on the URL hash. These modifications suggest a focus on improving the plugin's responsiveness and usability.
jquerytransformtabletcssjavascript
codezilla-nl/codezilla-website
Oct 2016 - Nov 2022
CODEZILLA's Website
Contributions:12 reviews, 397 commits, 268 PRs in 6 years 2 months
react
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