Kees Jongenburger
Security Innovator
Amsterdam, North Holland, Netherlands
Summary
👤
SeniorKees Jongenburger is a pragmatic security innovator and embedded systems expert with 16 years of hands-on experience designing and prototyping compact electronics, wireless solutions, and SDR projects. Based in Amsterdam, he blends deep low-level engineering—demonstrated by performance-focused driver work on the MINIX MMC stack—with a passion for open source, DIY manufacturing and 3D printing. At Riscure he applies that embedded expertise to security challenges, bridging hardware, firmware and tooling to deliver auditable, real-world solutions. Known for refactoring and performance improvements rather than flashy rewrites, he favors pragmatic, portable code that scales across diverse hardware platforms.
16 years of coding experience
English, French, Dutch
Stackoverflow
271reputation
128kreached
1answer
0questions
Github Skills (17)
c1110
c1710
device-driver10
driver10
sys10
embedded10
operating-system10
architecture9
abstraction-layer9
interrupt-handling9
interrupt9
hal9
architectures9
arm9
progress-bar6
Programming languages (23)
Github contributions (5)
Stichting-MINIX-Research-Foundation/minix
Oct 2012 - May 2014
Official MINIX sources - Automatically replicated from gerrit.minix3.org
Role in this project:
Back-end Developer
Back-end DeveloperContributions:103 commits in 1 year 7 months
Contributions summary:Kees primarily worked on the MINIX operating system's MMC (MultiMediaCard) driver, implementing and refactoring code to improve performance and functionality. Their contributions included adding features like timeout for busy loops and interrupt handlers. The user also modified the code to utilize a 4-bit data bus for improved transfer speeds, and refactored the code to generalize the use of the mmc_send_cmd function. These improvements aimed to enhance the driver's efficiency and compatibility across different hardware platforms.
minixgerritreplicatedminix3sources
keesj/Android-HelloWorldService
May 2011 - Sep 2011
Contributions:31 commits in 3 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.