Harrison Oglesby is a Senior Software Engineer in San Jose with 11 years of experience specializing in Android development and cross-platform work using Flutter/Dart and Unity. He’s shipped major mobile features across startups and consumer products—revamping core Android experiences at Miles and Poshmark, converging Android parity and Flutter migration at NimbleRx, and contributing UI-focused improvements to Mozilla’s flagship Firefox for Android. Comfortable across the stack, he pairs front-end craftsmanship and theming (notably composable UI work in the Fenix repo) with pragmatic backend integrations and SDK improvements. Known for migrating legacy Java codebases to modern Kotlin and Flutter architectures, he also mentors engineers and bridges design and engineering to deliver polished user-facing products.
11 years of coding experience
7 years of employment as a software developer
BS, Computer Science, BS, Computer Science at California State University, Monterey Bay
High School Degree, High School Degree at Cupertino High School
⚠️ Fenix (Firefox for Android) moved to a new repository. It is now developed and maintained as part of: https://github.com/mozilla-mobile/firefox-android
Role in this project:
Front-end Developer & UI/UX Focused
Contributions:68 reviews, 7 commits, 9 PRs in 2 months
Contributions summary:Harrison primarily contributed to UI and component development within the Fenix (Firefox for Android) repository, focusing on improving the user interface. They implemented new composable UI elements like dividers and refactored existing components such as the tab grid item and recent bookmarks. Their work also involved replacing existing night mode annotations and integrating a new LightDarkPreview annotation, indicating a focus on theming and design.
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Harrison Oglesby - Senior Software Engineer at Mozilla