Senior Staff ML Engineer: GenAI-Driven User Understanding

Reddit, Inc. is seeking a Senior Staff Machine Learning Engineer to lead the next-generation user understanding initiative, building a unified, high-fidelity representation of each user to power personalization across feeds, search, and ads. You will set the technical direction for embeddings, user profiles, and attribute modeling, drive end-to-end systems from data to serving, and mentor senior engineers while partnering with product and infra teams to deliver measurable impact at global scale.