Peter Jahn
Principal UX Engineer at Microsoft
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolPeter Jahn is a Principal UX Engineer based in Seattle with over a decade of experience at Microsoft designing and shipping polished, cross-platform experiences for OneDrive and SharePoint. He blends product design, front-end engineering, and people leadership to reduce friction in the design-to-engineering handoff, leading teams that own design systems from code to process. His hands-on work includes founding and contributing to Office UI Fabric and improving documentation for Microsoft's Fluent UI—efforts that help hundreds of teams build consistent, accessible interfaces. Known for casting bold visions while creating clear plans, he excels at coaching engineers and designers to reach their potential. An uncommon strength is his combination of deep CSS/theming expertise and technical writing, which makes complex component behavior both usable and discoverable.
10 years of coding experience
15 years of employment as a software developer
BA Graphic Design, BA Graphic Design at Western Washington UniversityGraduate Certificate in Software Design and Development Computer Software Engineering, Graduate Certificate in Software Design and Development Computer Software Engineering at University of Washington Bothell
Stackoverflow
86reputation
595reached
4answers
0questions
Github Skills (18)
ui-components10
css10
component-kit10
front-end-development10
lessc10
office-ui-fabric10
react10
documentation10
user-interface9
ui-design9
typescripts8
typescript-types8
typescript8
outlook6
sharepoint6
Programming languages (6)
Github contributions (5)
OfficeDev/office-ui-fabric-core
Aug 2015 - Feb 2020
The front-end CSS framework for building experiences for Office and Microsoft 365.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:13 releases, 2 reviews, 287 commits in 4 years 7 months
Contributions summary:Peter primarily contributed to the styling and theming of UI elements within the Office UI Fabric Core framework. Their work involved adding, modifying, and refining CSS styles for various components, including buttons, links, command bars, search boxes, dropdowns, and details lists. A significant portion of the user's changes focused on updating the visual presentation, using MDL2 icons, and adhering to the framework's design principles for consistent user experiences.
cssexperiencesmicrosoft-365microsoftfor-office
microsoft/fluentui
Feb 2016 - Feb 2020
Fluent UI web represents a collection of utilities, React components, and web components for building web applications.
Role in this project:Technical Writer
Technical WriterContributions:27 reviews, 56 commits, 107 PRs in 4 years
Contributions summary:Peter's contributions primarily focus on updating and expanding the documentation for various Fluent UI components within the `microsoft/fluentui` repository. They added detailed overviews, "dos," and "don'ts" sections to the documentation pages for components like `ProgressIndicator`, `CommandBar`, `ContextualMenu`, `DetailsList`, `Dialog`, `DocumentCard`, `Dropdown`, `Facepile`, `MessageBar`, `SearchBox`, `Slider`, `Spinner`, and `Toggle`. The changes involved updating existing documentation and integrating new examples to improve the usability and clarity of the documentation.
web-componentsreact-component-libraryreact-componentsmicrosoftui-components
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