Jeroen Weener
Ethical Hacker at The S-Unit
Utrecht, Utrecht, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolJeroen Weener is an Ethical Hacker and seasoned software engineer with 11 years of experience building secure, user-focused applications from frontend to mobile plugins. Based in Utrecht, he has contributed to core Flutter packages—most notably improving Android image_picker stability and migrating in_app_purchase to BillingClient V5—demonstrating hands-on expertise in cross-language plugin work. He has shaped product direction and developer experience at Baseflow and led frontend architecture and security initiatives at equimerio. As chairman of RoboTeam Twente he combined technical leadership with public-facing responsibilities, winning a spot at the robot soccer world championship and launching an educational committee. Jeroen’s background in computer science and early teaching roles gives him a pragmatic communicator’s edge when explaining complex security issues to technical and non-technical stakeholders. He now focuses on ethical hacking, blending deep platform knowledge with a practical, developer-first approach to security.
11 years of coding experience
5 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at University of TwentePre-university education Nature and Technology, Pre-university education Nature and Technology at Dr. Nassau College Quintus
Dutch, English
Stackoverflow
1reputation
0reached
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Github Skills (14)
javas10
image-picker10
flutter-game10
mobile-development10
android10
flutter-apps10
java10
in-app-purchase10
flutter10
thread9
multithreading9
hyper-threading9
threaded9
sharedpreferences8
Programming languages (7)
Github contributions (5)
flutter/packages
Mar 2023 - Dec 2023
A collection of useful packages maintained by the Flutter team
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:21 reviews, 10 PRs, 33 comments in 9 months
Contributions summary:Jeroen primarily contributed to the `image_picker` package, focusing on Android-specific implementations. Their work involved fixing crashes related to `SecurityException`, moving I/O operations to background threads for UI performance improvements, and refactoring code related to `HashSet` construction. They also addressed issues with the `in_app_purchase` package, migrating to BillingClient V5 and fixing method signature mismatches. In addition, they updated the example app to align with the breaking changes.
flutter
JeroenWeener/Libertas
Jul 2021 - May 2023
Implementation of a backward-private, wildcard supporting, SSE scheme
Contributions:6 PRs, 40 pushes, 6 branches in 1 year 10 months
schemessesupportingwildcard
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