Rogier Slag
CTO at Magnet.me
Rotterdam, South Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolRogier Slag is a seasoned technology leader and CTO with 12 years of experience building and scaling systems and teams, currently steering product and engineering at Magnet.me in Rotterdam. He progressed internally from software engineer to engineering manager and now CTO, guiding a platform that connects 300k+ students and 5k+ employers and leverages AI to match talent with opportunity. Technically hands-on, Rogier contributes to open-source projects like MJML and react-pdf, improving rendering, file output and image handling—work that reflects a focus on reliable, customizable front-end and document tooling. Earlier as founder/CTO of inventid he led hardware-software integration for ticketing and access control, bringing practical IoT and payment innovations to events. He holds both BSc and MSc degrees in Computer Science from TU Delft and a background in aerospace engineering, signaling a blend of rigorous engineering discipline and product-driven execution. Colleagues describe him as a builder who pairs strategic leadership with the willingness to dive into code to solve tricky production problems.
12 years of coding experience
10 years of employment as a software developer
VWO Natuur & Techniek + Natuur & Gezondheid, VWO Natuur & Techniek + Natuur & Gezondheid at Bisschoppelijk College Weert-CranendonckMaster of Science (MSc) Computer Science, Master of Science (MSc) Computer Science at Delft University of Technology
English, Spanish, Dutch
Stackoverflow
526reputation
77kreached
23answers
0questions
Github Skills (18)
javascript10
sendmail10
responsive-email10
send-email10
pdf10
e-mail10
mjml10
react10
testing9
html8
flexbox8
css7
whatsapp6
mobile6
afnetworking6
Programming languages (14)
Github contributions (5)
mjmlio/mjml
Feb 2016 - Dec 2016
MJML: the only framework that makes responsive email easy
Role in this project:
Front-end Developer
Front-end DeveloperContributions:5 commits, 10 PRs, 60 comments in 9 months
Contributions summary:Rogier primarily contributed to the MJML framework, focusing on enhancing the functionality and features of existing components. Their work included modifying the rendering behavior of components, allowing for the customization of attributes such as height, and addressing potential rendering issues. They also worked on merging updates from upstream and fixing a bug related to how the framework handles whitespace. The changes demonstrate a focus on improving the rendering and customization capabilities of the email framework.
mjmlresponsive-emailemailemail-boilerplateemail-campaigns
diegomura/react-pdf
Oct 2017 - Feb 2018
📄 Create PDF files using React
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:6 commits, 5 PRs, 30 comments in 3 months
Contributions summary:Rogier primarily contributed to the `react-pdf` repository by adding new features and functionality. They implemented the ability to render PDF streams and files, allowing for file output from the library. Furthermore, they added the functionality to include document metadata, such as author and title. They also introduced the ability to pass image data as a buffer, along with adding tests for local image files, and fixing warnings in the library.
pdf-filesreactpdfrendererflexbox
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