Rosa E.
Principal Engineer | ML Infra • Recommenders • LLMs
- Role
- Principal Software Engineer at Rec Room
- Location
- Seattle, WA, US
- LinkedIn followers
- 500 followers
About Rosa E.
I’m a software engineer and technical leader with 15+ years of experience building ML…
Experience
Principal Software Engineer
Sep 2020 — Present · Seattle, WA, US
Built Rec Room’s ML and data infrastructure from scratch, enabling recommendations, personalization, and LLM-powered features for millions of players across thousands of user-generated games- Developed a self-serve ML platform that empowered data scientists to deploy hundreds of models end-to-end without engineering support- Designed the ranking system (+13% player time spent) and the “Similar Rooms” carousel (now driving 8% of visits)- Applied graph-based embeddings (node2vec) and LLM embeddings to improve recommendation relevance and discovery- Shipped LLM-powered features in Roomie, Rec Room’s AI bot, including per-user conversational memory for context-aware interactions- Drove collaboration across teams, mentored junior developers, and built workflows that enabled data scientists to achieve 10× greater productivity.Highlight: Launched Rec Room’s first ML infrastructure and recommendation platform, now core to engagement and monetization.
Education
University of Central Florida
Doctor of Philosophy, Computer Science
2004 — 2009
University of Central Florida
Master of Science, Computer Science
2004 — 2006
University of Central Florida
Bachelor of Science, Computer Science
2001 — 2004
Skills
- Data Mining
- C
- Programming
- Object Oriented Design
- C++
- C#
- Computer Science
- Visual Studio
- Java
- Azure
- Software Development
- Python
- Software Engineering
- Sql
- Algorithms
- Software Design
- Machine Learning
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