Sven Jensen is a driven Dutch software developer and entrepreneur based in Rotterdam with six years of hands-on experience spanning logistics, IT, and mobile/web development. He founded Jensen IT in 2022 to build Android and iOS apps and websites, while also contributing to open-source education tooling—most notably adding execution and level-handling features to Hedy, a gradual programming language for teaching children. Alongside tech work he balances diverse roles in logistics (Chauffeur at PostNL) and extensive volunteer and leadership commitments in volleyball organizations, where he serves as youth council chair and referees coordinator. Sven’s mix of practical delivery, community leadership, and early-career open-source impact highlights an ability to translate technical ideas into usable learning tools and real-world services. At 18 he demonstrates unusually broad responsibility for his age, juggling entrepreneurship, professional driving, and national-level sports officiating.
6 years of coding experience
Havo Natuur en Gezondheid, Havo Natuur en Gezondheid at Lyceum Kralingen
VS3 Scheidsrechter, VS3 Scheidsrechter at Volleybalacademie
Hedy is a gradual programming language to teach children programming. Gradual languages use different language levels, where each level adds new concepts and syntactic complexity. At the end of the Hedy level sequence, kids master a subset of syntactically valid Python.
Role in this project:
Backend Developer
Contributions:12 commits, 7 PRs, 7 pushes in 1 year 11 months
Contributions summary:Sven primarily focused on implementing features to run Hedy files locally. Their contributions include adding functionality to execute Hedy code, defining level arguments, and incorporating a mechanism to read the level from within the Hedy file itself. They also fixed errors in the execution process and updated the local Hedy files with new functionality, including a new print function and the separation of the execution functionality into `runhedy.py`.
Contributions:10 releases, 54 pushes, 12 branches in 1 day
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