Marius Tennøe
Principal Software Engineer at Microsoft
Oslo, Norway
Summary
🤩
Rockstar🎓
Top SchoolMarius Tennøe is a Principal Software Engineer based in Oslo with 11 years of professional experience at Microsoft, progressing from intern to principal since 2011. He specializes in front-end engineering and UI component design, contributing to high-impact open source projects such as Microsoft’s Fluent UI—where he improved Persona and DocumentCardImage components to enhance visual polish and image-handling robustness. Known for shipping pragmatic, user-focused improvements, he blends deep product understanding with hands-on implementation across large-scale web apps. His MSc in Computer Science from Universitetet i Oslo underpins a methodical approach to architecture and developer experience. Colleagues value him for translating subtle UX needs into reliable, reusable components that scale across teams.
11 years of coding experience
8 years of employment as a software developer
Master of Science (MSc), Computer Science, Master of Science (MSc), Computer Science at Universitetet i Oslo (UiO)
some german, Norwegian, English
Github Skills (9)
typescript10
typescripts10
component-kit10
fluentd10
front-end-development10
react10
typescript-types10
ui-components10
office-ui-fabric-react10
Programming languages (3)
Github contributions (5)
microsoft/fluentui
Oct 2017 - Feb 2019
Fluent UI web represents a collection of utilities, React components, and web components for building web applications.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:18 reviews, 9 commits, 34 PRs in 1 year 3 months
Contributions summary:Marius primarily contributed to the UI component library Fluent UI, specifically working on the Persona component. Their work included reserving and customizing colors in the PersonaCoin palette and adding a callback to handle image loading state changes within the Persona component. They also introduced a simpler DocumentCardImage component, adding new functionality and improved existing ones. These modifications reflect a focus on enhancing the visual elements and user experience of the Fluent UI library.
web-componentsreact-component-libraryreact-componentsmicrosoftui-components
mtennoe/swagger-typescript-codegen
Jun 2017 - Aug 2022
A Swagger Codegenerator tailored for typescript.
Contributions:2 releases, 2 reviews, 83 commits in 5 years 2 months
tailoredcodegeneratortypescriptopenapiswagger
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