Ruben Stolk
Founder And CTO at Capptions
Rotterdam, South Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolRuben Stolk is a seasoned tech founder and CTO steering Capptions in Rotterdam as a VC-backed platform that makes QHSE data capture easier, faster and more digital. He has led Capptions since 2010 and oversees the India office since 2011, driving global growth, offline-capable incident and risk management, and API integrations. A serial entrepreneur, he previously founded Social Schools B.V. and Changer B.V., building web and mobile apps across multiple sectors. He remains technically hands-on, contributing to open-source projects such as the atrament canvas library, where he improved drawing offsets and UI interactions. With a BSc in Computer Science from the University of Twente and an MSc in Business Informatics from Erasmus University Rotterdam, plus studies in economics, he combines engineering depth with business acumen to turn complex requirements into practical, scalable solutions.
14 years of coding experience
14 years of employment as a software developer
BSc, Computer Science, BSc, Computer Science at University of TwenteBSc, Economics, BSc, Economics at Université de Fribourg - Universität FreiburgMSc, Business Informatics, MSc, Business Informatics at Erasmus University RotterdamGymnasium Degree, Dutch, English, French, Latin, Physics, Math, Chemistry, Gymnasium Degree, Dutch, English, French, Latin, Physics, Math, Chemistry at Marnix Gymnasium
Dutch, English, French, German, Turkish, Hindi
Github Skills (9)
canvas-js10
javascript10
javascripts10
event-handling10
drawing10
canvas-2d10
canvas10
userinterface9
user-interface9
Programming languages (18)
Github contributions (5)
jakubfiala/atrament
Sep 2016 - Dec 2016
A small JS library for beautiful drawing and handwriting on the HTML Canvas.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:7 commits, 4 PRs, 3 comments in 3 months
Contributions summary:Ruben primarily contributed to the `atrament` library by fixing issues related to drawing offsets and implementing features like a "dirty" property and event, and a destroy helper function. Their work involved modifications to the JavaScript code, specifically focusing on the drawing functionalities and event handling within the library. The user's commits demonstrate an understanding of the library's core drawing logic and the UI interaction aspects.
js-librarynode-canvascanvasjavascripthandwriting
capptions/sc-autolinker
Sep 2015 - Nov 2020
Contributions:19 pushes, 1 branch, 1 tag in 5 years 2 months
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