Senior Staff Machine Learning Engineer, ML Understanding

About Reddit

Reddit is a community of communities built on shared interests, passion, and trust. Home to 100,000+ active communities and approximately 126 million daily active unique visitors, Reddit is one of the internet's largest sources of information.

Role Overview

We're looking for a Senior Staff Machine Learning Engineer to lead Reddit's next-generation user understanding initiative: building a unified, high-fidelity representation of each user that powers personalization across the platform.

Key Requirements

• Deep expertise in mainstream ML user modeling approaches (large-scale embeddings, user interest modeling, affinities, behavioral signals)
• Ability to reimagine systems in the GenAI era leveraging LLMs