Sebastian Toomey
Senior Product Designer at Stellar Cyber
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolSebastian Toomey is a Senior Product Designer with nine years of experience crafting enterprise-grade UX for technical users, particularly across cybersecurity and academic publishing. He has led design for high-impact security platforms at Google Cloud/Mandiant—driving measurable growth and usage improvements—while building reusable component libraries and design systems for complex workflows. Skilled at translating intricate data-heavy tasks into intuitive interfaces, he pairs hands-on prototyping and facilitation with rigorous user research and cross-functional collaboration. Based in San Francisco, he blends a design education (MS in Architecture & Industrial Design) and fine-art roots with backend engineering contributions to major open-source projects like Firebase and MediaPipe, giving him an uncommon fluency between UX, systems architecture, and developer tools.
9 years of coding experience
MS Architecture & Industrial Design, MS Architecture & Industrial Design at Georgia Institute of TechnologyBA Liberal Arts Furniture Design, BA Liberal Arts Furniture Design at Marlboro CollegeFine Art, Fine Art at Carnegie Mellon University
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Github Skills (35)
objective-c10
google-cloud-firestore10
javascript10
ios10
api-design10
memory-management10
databases10
machine-learning10
java10
ml10
javas10
sdk10
firestore10
realtime-database10
nodejs10
Programming languages (16)
Github contributions (5)
googleapis/nodejs-firestore
Oct 2017 - Sep 2022
Node.js client for Google Cloud Firestore: a NoSQL document database built for automatic scaling, high performance, and ease of application development.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:21 releases, 277 reviews, 446 commits in 5 years
Contributions summary:Sebastian's contributions center on the initial development and maintenance of the Node.js client for Google Cloud Firestore. This is evidenced by the initial release of code, including the creation of essential proto definitions and the implementation of methods for interacting with the Firestore API. The commits involve fixing various issues such as logging messages, serialization, and handling specific errors. The code changes demonstrate a strong understanding of API design and protobuf-based communication.
js-clientgoogle-cloudgoogle-cloud-firestorejavascriptnodejs
firebase/firebase-android-sdk
Sep 2018 - May 2022
Firebase Android SDK
Role in this project:Back-end Developer
Back-end DeveloperContributions:420 reviews, 370 commits, 650 PRs in 3 years 8 months
Contributions summary:Sebastian primarily contributed to the Firebase Android SDK, focusing on the Realtime Database and Firestore components. Their work included bug fixes, such as addressing thread safety and handling missing headers. They also implemented new features for the Firestore component and optimized code related to query processing and index creation. Furthermore, they backported changes related to protobuf and added tests for the functionality implemented.
firebase-remote-configfirebase-databasefirebase-firestorefirebase-functionsdatabase-as-a-service
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