Jens Claes
Founding Software Engineer at Pleevi
Leuven, Flemish Brabant, Belgium
Summary
🤩
Rockstar🎓
Top SchoolJens Claes is a Founding Software Engineer and senior technologist with 13 years of hands-on experience building scalable, type-safe cloud-native systems and mobile products from Leuven, Belgium. He repeatedly modernized critical infrastructure—most notably rewriting DataCamp’s core to run on Kubernetes with custom CSI/CRI integrations—while improving performance, observability and platform stability. Comfortable as both IC and manager, Jens drives cross-functional delivery, mentors engineers, and introduced pragmatic engineering practices like type-safe RPCs, RBAC modeled in TypeScript, and ADRs. His open-source contributions include meaningful UX and performance improvements to Android Week View, reflecting a pragmatic attention to developer and end-user experience. Collected experience across backend, frontend and mobile gives him a rare ability to translate product needs into reliable, production-ready architecture.
13 years of coding experience
10 years of employment as a software developer
Master’s Degree Engineering: Computer Science Major Artificial Intelligence (and Declarative Languages), Master’s Degree Engineering: Computer Science Major Artificial Intelligence (and Declarative Languages) at KU LeuvenHigh School Latijn-Wiskunde (8u), High School Latijn-Wiskunde (8u) at Sint-Jozefsinstituut Ternat
Dutch, English, French
Github Skills (7)
javas10
uid10
front-end-development10
ui-design10
android10
java10
custom-view9
Programming languages (30)
Github contributions (5)
alamkanak/Android-Week-View
Dec 2014 - Oct 2016
Android Week View is an android library to display calendars (week view or day view) within the app. It supports custom styling.
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:69 commits, 51 PRs, 31 pushes in 1 year 10 months
Contributions summary:Jens primarily contributed to the Android Week View library, focusing on enhancing the user experience and functionality of the calendar view. Their work includes making horizontal scrolling more intuitive, optimizing the speed of horizontal scrolling and fixing the goToDate functionality. Furthermore, the user also introduced features such as adding a scroll-listener and all day events and added the ability to zoom the view vertically.
week-viewcalendarcustom-stylingandroid-libraryandroid
datacamp-engineering/kong-plugin-geoip-mmdb
Nov 2020 - Mar 2025
Contributions:2 PRs, 2 pushes, 1 branch in 4 years 4 months
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