Brian Heston is a senior designer and systems thinker with 7+ years of hands-on experience building accessible, scalable design systems that power products across billions of devices. He’s driven design-to-code efforts and consistency initiatives at Microsoft—contributing to Fluent UI and the FAST adaptive UI project—and now leads design system work at Highspot while consulting on multi-brand, adaptive solutions. Known for bridging design and engineering, Brian focuses on visual polish, theming, and density-aware components to make interfaces cohesive and maintainable. He combines deep front-end contributions to high-profile open-source libraries with a customer-centered approach to accessibility and product outcomes.
The adaptive interface system for modern web experiences.
Role in this project:
Front-end Developer
Contributions:309 reviews, 142 commits, 223 PRs in 3 years 10 months
Contributions summary:Brian primarily contributed to the development of UI components and styling within the microsoft/fast repository. Their work involved updating styles and design system density, removing deprecated references, and refactoring components for consistency. They also added support for icon resizing based on density and implemented visual enhancements like support for filled appearances and accessibility updates, demonstrating a focus on improving the user experience and design system integration.
Fluent UI web represents a collection of utilities, React components, and web components for building web applications.
Role in this project:
Front-end Developer
Contributions:64 reviews, 26 commits, 39 PRs in 2 years 3 months
Contributions summary:Brian primarily contributed to the Fluent UI web component library by modifying and extending existing web components, specifically focusing on the visual presentation and styling aspects of the components. Their work involved updating color handling, fixing issues with color recipes, and implementing new visual styles and theming capabilities. The user's contributions improved the overall user interface of the Fluent UI web components.
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