Jonatan Kronqvist
Staff Engineer at Layer
Raisio, Southwest Finland, Finland
Summary
👤
Senior🎓
Top SchoolJonatan Kronqvist is a staff engineer and technology leader with over 16 years of hands-on experience and 20+ years shaping products, teams, and architecture from startups to global-scale systems. He combines full‑stack engineering (Java, Go, TypeScript, React) with cloud-native expertise (AWS, Kubernetes, Terraform) to build resilient, high-throughput platforms—most recently contributing to one of the world’s largest multiplayer security systems handling tens of millions of requests per second. A former VP of Product at Vaadin, he uniquely blends product strategy with deep technical delivery, having driven significant revenue and led cross-functional teams. He also founded a small iOS studio and contributes pragmatic front-end fixes to well-known open-source projects like Vaadin, showing a long-standing commitment to craftsmanship across UI and backend. Known for creating clarity, trust, and positivity, he focuses on coaching teams to deliver measurable impact while keeping development enjoyable.
16 years of coding experience
10 years of employment as a software developer
M.Sc. in Technology Software engineering Embedded software Industrial computer engineering, M.Sc. in Technology Software engineering Embedded software Industrial computer engineering at Åbo Akademi University
Swedish, Finnish, English
Github Skills (13)
html10
application-framework10
javas10
web-framework10
webapp-framework10
gwt10
web-application10
webapp10
vaadin10
java10
testing9
css9
javascript4
Programming languages (8)
Github contributions (5)
vaadin/framework
Jul 2010 - Jan 2016
Vaadin 6, 7, 8 is a Java framework for modern Java web applications.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:293 commits in 5 years 7 months
Contributions summary:Jonatan primarily focused on fixing bugs related to the behavior of the VPopupView component within the Vaadin framework, specifically addressing issues related to focus, keyboard navigation, and visibility. These fixes involved modifying the Java code and HTML tests to ensure proper handling of focus events and to correct display behavior when the component is interacted with using keyboard controls. The contributions also involved updates to existing test cases, ensuring they worked correctly on multiple browsers including Opera and also included adjusting the CSS.
web-applicationsjava-webvaadin-frameworkweb-application-frameworkjava
zch/ContextHelp
Dec 2009 - Apr 2017
ContextHelp is a component for Vaadin (http://vaadin.com/) that allows showing of contextual help.
Contributions:80 commits, 3 PRs, 7 pushes in 7 years 5 months
vaadincontextual-helpcontextual
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