Jeroen Leenarts
Senior IOS Engineer at AppForce1
Gelderland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolJeroen Leenarts is a Senior iOS Engineer with over 16 years focused on mobile platforms and a software development career stretching back to 2002. He combines hands-on iOS engineering with developer advocacy, having led iOS developer relations at Stream and now working as a senior engineer while running AppForce1, a podcast and freelance studio aimed at the iOS community. He has deep experience across app architecture, UI coordination, and integrations—evidenced by contributions to notable projects like the WireGuard iOS client where he implemented UI flows and QR-based config import/export. Active in the Dutch developer scene as chairman of Stichting CocoaHeadsNL, Jeroen balances technical leadership with community-building and public-facing communication. His background spans full-stack and DevOps responsibilities from AWS microservices to mobile operations, making him comfortable bridging product, infrastructure, and developer experience.
16 years of coding experience
18 years of employment as a software developer
Master of Science Technical Informatics, Master of Science Technical Informatics at Open Universiteitprofessional bachelor Informatics, professional bachelor Informatics at WindesheimHAVO, HAVO at Thomas a Kempis College Zwolle
English, Dutch
Stackoverflow
522reputation
37kreached
12answers
1question
accessibility
top-5%
Github Skills (14)
uikit10
coredata10
ios10
swift10
accessibility9
ui-design8
memory-leaks6
cocoa-touch6
csv6
rotation6
getstream-io6
voiceover6
iphone6
uiview6
Programming languages (20)
Github contributions (5)
WireGuard/wireguard-apple
May 2018 - Oct 2018
Mirror only. Official repository is at https://git.zx2c4.com/wireguard-apple
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:156 commits in 4 months
Contributions summary:Jeroen primarily contributed to the development of the iOS application, focusing on the creation and integration of UI elements. They added core components, including an app coordinator, and view controllers related to tunnel configuration and information display. The user also introduced the ability to import and export configuration files and implemented functionalities such as scanning QR codes. This includes the integration of a scanning functionality to import configuration details from QR codes.
wireguard
GetStream/stream-node-simple-integration-sample
Jan 2023 - Apr 2025
This is a sample implementation on how to integrate a NodeJS based login/signup API with Stream's service APIs.
Contributions:1 PR, 14 pushes, 2 branches in 2 years 3 months
nodejschatfeedsstream
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