Rosário Fernandes
Senior Developer Relations Engineer
London, England, United Kingdom
Summary
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Rockstar🎓
Top SchoolRosário Fernandes is a Senior Developer Relations Engineer at Google’s Firebase team in London with a decade of experience building and advocating for mobile developer tooling. He combines hands-on Android and Kotlin expertise—contributing KTX extensions and Kotlin quickstart samples to the official Firebase Android SDK and related repos—with a knack for improving code quality and developer ergonomics. Previously he led mobile teams and shipped payment and UX improvements for e-commerce in Mozambique, and cut crash rates by migrating clients from Java to Kotlin. Comfortable across product, developer experience, and CI workflows, he translates platform capabilities like Vertex AI and Firebase Data Connect into clear samples and practical guidance. Colleagues rely on him for stabilizing refactors and pragmatic API ergonomics that make Firebase easier to adopt.
10 years of coding experience
4 years of employment as a software developer
Technical IT Information Technology, Technical IT Information Technology at Instituto Médio Politécnico de MaputoBachelor's degree Computer Science, Bachelor's degree Computer Science at ISCTEM - Instituto Superior de Ciências e Tecnologia de Moçambique
English, Portuguese
Stackoverflow
11,190reputation
967kreached
296answers
14questions
android
top-5%
firebase
top-1%
firebase-authentication
top-5%
firebase-storage
top-1%
google-cloud-functions
top-5%
javascript
top-5%
Github Skills (33)
kotlin10
firebase-analytics10
google-cloud-firestore10
firebase-dynamic-links10
firebase-authentication10
firebase-remote-config10
testing10
android-sdk10
ui-design10
firebase-realtime-database10
android-development10
java10
javas10
sdk10
android10
Programming languages (21)
Github contributions (5)
firebase/quickstart-android
Sep 2018 - Jan 2023
Firebase Quickstart Samples for Android
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:326 reviews, 134 commits, 297 PRs in 4 years 5 months
Contributions summary:Rosário's commits focus on adding Kotlin-based quickstart samples for Firebase, specifically demonstrating the use of Firebase Functions, Remote Config, Performance Monitoring, Analytics, Invites, and ML Kit. These contributions include implementing new features, integrating Firebase functionalities, and adapting the quickstart projects to Kotlin, encompassing UI updates and code modifications within the Android environment. The user's work has expanded the utility and demonstrative power of the Firebase quickstart examples.
firebase-databasefirestorefirebase-messagingfirebase-functionsfirebase
firebase/snippets-android
Jul 2018 - Jan 2023
Android snippets for firebase.google.com
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:204 reviews, 130 commits, 200 PRs in 4 years 7 months
Contributions summary:Rosário's contributions primarily focused on developing Android snippets for Firebase, showcasing expertise in Kotlin. They implemented new storage samples and tasks samples, demonstrating an understanding of Firebase Storage and Tasks APIs. The user also created examples for Dynamic Links and FirebaseOptions, expanding the Android snippets with features.
firebasegoogle-firebaseandroidsnippets
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