Horatiu Lazu
Staff Software Engineer at Meta
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolHoratiu Lazu is a Staff Software Engineer at Meta in New York who designs and executes multi-year technical strategy for the messaging storage infrastructure that supports billions of users across Messenger and Instagram. With a Computer Science degree from the University of Waterloo (Dean’s List) and a decade of experience, he blends production-grade backend engineering in Java/C++ with research fluency—co-authoring SIGMOD/VLDB papers on adaptive storage for HTAP systems. His career includes internships at Google, Citadel Securities, Yelp and Bloomberg, and notable open-source contributions to the widely used Firebase Admin Node.js SDK around auth and type-safety. Horatiu focuses on large-scale system unification, migration risk reduction, and cross-team alignment to replace decade-old bespoke services with common infrastructure, delivering incremental non-regrettable wins. Outside of work he pursues algorithmic contests, research reading, personal projects and road biking, reflecting a mix of competitive rigor and practical engineering. He emphasizes strong CS fundamentals, integrity, and measurable operational impact when solving complex distributed-systems problems.
10 years of coding experience
5 years of employment as a software developer
High-School MaCS Program (Math/CS), High-School MaCS Program (Math/CS) at William Lyon Mackenzie Collegiate InstituteBachelor's Degree Computer Science, Bachelor's Degree Computer Science at University of Waterloo
Romanian, English, French
Stackoverflow
946reputation
115kreached
30answers
9questions
Github Skills (19)
user-authentication10
authentication10
typescript10
typescript-types10
nodejs10
typescripts10
firebase10
apidoc9
api9
data-structures6
hash6
graph6
jquery6
hashmap6
java6
Programming languages (10)
Github contributions (5)
firebase/firebase-admin-node
Jun 2020 - Aug 2020
Firebase Admin Node.js SDK
Role in this project:
Back-end Developer
Back-end DeveloperContributions:156 commits, 71 PRs, 269 pushes in 2 months
Contributions summary:Horatiu contributed to the Firebase Admin Node.js SDK, specifically focusing on the `auth` module. Their commits involved adding interfaces, fixing typing inconsistencies, and modifying the `auth` module to support features related to user import and custom claims. Furthermore, the user added null values to configurations and removed instances of SDK version placeholders. These changes improve the SDK's functionality, type safety, and maintainability.
firebase-adminfirebase-databaseadminfirestorenode-js
MathBunny/mackenzie-cpt
Sep 2015 - Apr 2017
Contributions:101 commits, 102 pushes, 2 branches in 1 year 6 months
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