Jonathan Almeida
Staff Software Engineer at Mozilla
Old Toronto, Ontario, Canada
Summary
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RockstarJonathan Almeida is a Staff Software Engineer with 13 years of experience specializing in Android and mobile browser engineering, currently based in Old Toronto. He has a long tenure at Mozilla where he progressed from intern to staff engineer, contributing significantly to Firefox for Android, GeckoView, and the Android Components ecosystem. His open-source contributions include deep work on push notifications, session management, UI stores, and feature integrations across high-profile Mozilla repos like Fenix and application-services. Known for pragmatic refactoring and improving UX—such as custom tab behaviors, PDF downloads, and custom share sheets—he balances platform-level changes with polished user-facing touches. Jonathan’s background spans performance-focused roles at Jet.com and cross-platform SDK work at Snowplow, giving him both product-facing and infrastructure sensibilities. An occasional machine-learning prototype author early in his career, he brings curiosity and a habit of turning research ideas into shipping Android features.
13 years of coding experience
4 years of employment as a software developer
English, German
Stackoverflow
1,216reputation
62kreached
8answers
19questions
Github Skills (40)
kotlin10
mobile-development10
android-sdk10
browser10
ui-design10
apple-push-notifications10
push-notifications10
android-development10
java10
javas10
uid10
front-end-development10
android10
geckoview10
ios9
Programming languages (22)
Github contributions (5)
mozilla-mobile/android-components
Aug 2018 - Oct 2022
⚠️ This project moved to a new repository. It is now developed and maintained at: https://github.com/mozilla-mobile/firefox-android
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:20 releases, 471 reviews, 385 commits in 4 years 2 months
Contributions summary:Jonathan's contributions primarily involve implementing and testing new features related to the Android components of the Mozilla mobile browser. They added functionality to stop loading sessions in the Engine component, integrated new capabilities for the EngineSession class, and incorporated support for features like PDF downloads. The user also addressed platform-specific issues like adjusting the visibility of full-screen views and handling the correct color for the toolbar. They have consistently focused on the browser's UI and session management aspects.
firefoxbrowserfirebasefirefox-androidandroid
mozilla-mobile/focus-android
Nov 2019 - Nov 2022
⚠️ Firefox Focus (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:Mobile Developer (Android)
Mobile Developer (Android)Contributions:79 releases, 356 reviews, 178 commits in 3 years
Contributions summary:Jonathan primarily contributed to the Firefox Focus (Android) repository, focusing on GeckoView integration and updates. Their work included adding support for GeckoView prompts, updating dependencies (AC and GV), and addressing bugs. They also refactored CustomTabActivity and enhanced the user experience.
firefoxbrowserprivacyfirefox-androidandroid
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