Pepijn Fens
Member Of Technical Staff at Filed
Eindhoven, North Brabant, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolPepijn Fens is a pragmatic full-stack engineer with 13 years of professional experience who blends hands-on front-end craftsmanship with product-aware technical leadership. He has scaled apps and teams—from building customer-facing React and React Native experiences to migrating backends to Kubernetes and optimizing Google Cloud estates as an Associate Tech Director. An active open-source contributor, Pepijn has improved UX and accessibility in the widely used Mattermost project, adding message indicators, keyboard shortcuts and theming refinements. He values company culture and cross-team alignment as much as clean code, having driven architecture and release-process changes (OTA, daily releases) that reduced friction and sped delivery. Based in Eindhoven, he recharges by running and experimenting in his garden—an engineer who still gets the same thrill from a working build as when he first started coding at 14.
13 years of coding experience
14 years of employment as a software developer
Master of Science (MSc), Industrial Design, Master of Science (MSc), Industrial Design at Eindhoven University of Technology
German, English, Dutch
Github Skills (15)
css10
uid10
javascript10
front-end-development10
react10
ui-design9
web-application9
mattermost9
html9
user-interface8
fest8
collaboration8
graphical-user-interface8
react-native4
golang3
Programming languages (7)
Github contributions (5)
mattermost/mattermost
Oct 2016 - Feb 2017
Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
Role in this project:
Front-end Developer
Front-end DeveloperContributions:6 commits, 8 PRs, 27 comments in 3 months
Contributions summary:Pepijn primarily contributed to the front-end of the Mattermost application. They implemented new UI components, such as a new message indicator, and modified existing components like the channel header and sidebar. Their commits also include theming and styling adjustments using CSS, and incorporating keyboard shortcuts for user interactions. Furthermore, they appear to have worked on integrating features related to desktop notifications and overall user experience enhancements.
golangsecuredevelopment-lifecyclelifecyclereact-native
mattermost/mattermost-webapp
Oct 2016 - Feb 2017
Archived web app of Mattermost. Moved to the monorepo: https://github.com/mattermost/mattermost
Role in this project:Front-end Developer
Front-end DeveloperContributions:6 commits in 3 months
Contributions summary:Pepijn primarily contributed to the Mattermost web application's front-end, focusing on user interface enhancements and feature implementations. Their work included adding functionality to toggle mentions using shortcuts and buttons, which involved code refactoring and moving code to actions. Additionally, the user addressed various UI-related bugs and implemented a new message indicator component, improving the overall user experience. The user also modified theming and notifications to improve responsiveness.
webapphttps-servermattermostmattermost-server
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