Caleb Zearing

CurrentlyBuilding UI systems at Microsoft. Writing. Making music.

About

I'm a software engineer at Microsoft, building UI for Microsoft 365.

I build production apps, ship open-source libraries, and make music independently.

Experience

MicrosoftSoftware Engineer
Jun 2023 - PresentRedmond, WA
  • Building features for M365 Lighthouse to drive Copilot adoption in the SMB segment.
  • Reduced API calls by over 50% through call deduplication and logic optimization.
  • Integrated ESLint, led unit test coverage initiatives, and set up Storybook for component documentation.
Pongo AICo-Founder, CTO
Sep 2021 - Apr 2022Redmond, WA
  • Led end-to-end technical strategy for an AI platform modernizing e-commerce experiences.
  • Built a scalable component library, multiple production web apps, and a React Native mobile app.
  • Directed product development and supported fundraising through technical due diligence.
MicrosoftSoftware Engineer Intern
Jul 2021 - Sep 2021Remote
  • Contributed to Fluent UI V9, leading development of the Switch and Slider components.
  • Built conformance tests across all components and implemented visual regression testing for light and dark themes.
MicrosoftOpen Source Developer
Jul 2020 - Dec 2020Remote
  • Contributed to Fluent UI V8, refactoring class-based components to functional.
  • Expanded unit test coverage and fixed numerous component bugs across the library.

Projects

Writing

View all

Music

Electronic music, independently released.

Connect