About Jaap
Dutch
Native or bilingual
Experience
- Rompslomp.nl B.V.CTO / FounderSOFTWARE PUBLISHINGJanuary 2015 - June 2022 (7 years and 5 months)Utrecht, NetherlandsCo-founded and led the technical development of Rompslomp.nl, an accounting platform for freelancers. Built and scaled the system in Ruby on Rails and React Native to over 120,000 daily users. Acquired by Visma in 2022.
- Floorplanner.com B.V.Full stack software engineerDIGITAL AND ITJanuary 2007 - May 2009 (2 years and 4 months)Rotterdam, Netherlands Built the first backend and frontend (Ruby on Rails) Led the backend integration with Funda Developed a RESTful API for third-party access Implemented multi-language I18n translation system Integrated multiple payment systems (e.g., PayPal, Adyen) Managed all Linux servers on Amazon EC2 Improved SEO, ranking #1 on Google for "floorplan"
- Eduapp Benelux B.V.TechleadEDUCATION AND E-LEARNINGJanuary 2012 - July 2016 (4 years and 6 months)The Hague, Netherlands Launched the first version used by 65,000 teachers Led the development and technical architecture of the platform Scaled infrastructure to support rapid nationwide adoption
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Education
- Bachelor Computer ScienceTU Delft2010