Joost Zöllner
Software Consultant at Holisticon AG
Hamburg, Germany
Summary
👤
Senior🎓
Top SchoolJoost Zöllner is a software consultant and frontend architect based in Hamburg with 10 years of experience designing and building scalable web and mobile applications. He combines hands-on development with coaching, helping teams adopt robust frontend architectures and maintaining shared component libraries for enterprise projects. Joost has practical experience across the stack—from JavaScript frontends to Linux cloud operations and SAP system support—backed by MSc and BSc degrees in Wirtschaftsinformatik. An active open-source contributor, he improved Angular’s service worker push-notification handling, adding a notificationClicks observable and related optimizations. Known as a pragmatic problem solver, he focuses on reliable, testable solutions that scale across teams and products.
10 years of coding experience
1 year of employment as a software developer
Master of Science - MS, Wirtschaftsinformatik / IT-Management, Master of Science - MS, Wirtschaftsinformatik / IT-Management at NORDAKADEMIE Graduate SchoolBachelor of Science - BS, Wirtschaftsinformatik, Bachelor of Science - BS, Wirtschaftsinformatik at Fachhochschule Nordakademie Elmshorn
German, English
Stackoverflow
97reputation
4kreached
5answers
0questions
Github Skills (17)
javascript10
typescript10
service-worker10
typescript-types10
typescripts10
angular10
rxjs9
web-framework8
web-performance8
pwapp8
html6
angular-schematics6
http-request6
angular-cli6
angular-template6
Programming languages (5)
Github contributions (5)
angular/angular
Sep 2018 - Oct 2018
Deliver web apps with confidence 🚀
Role in this project:
Front-end Developer
Front-end DeveloperContributions:10 commits, 1 PR, 10 comments in 26 days
Contributions summary:Joost primarily contributed to the service-worker module of the Angular project. Their work focused on enhancing the service worker's handling of push notifications, specifically addressing the 'notificationclick' event. They implemented the `notificationClicks` observable to emit click events and updated the service worker code to close notifications and focus the browser window on click. Additionally, the user made various code optimizations and typing improvements within the service worker and related testing files.
reactjavascriptpwanodejsweb-developer
joostme/homelab
Apr 2022 - Nov 2022
Contributions:56 PRs, 152 pushes in 7 months
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