[2026] Senior Machine Learning Engineer, Recommendation Systems - PhD Early Career

Roblox · San Mateo

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Company: Roblox
Location: San Mateo
Salary: $195,780 — $242,100
Posted: October 27, 2025

About this job

Recommendation Systems are a key growth lever at Roblox, driving retention, engagement, and monetization for hundreds of millions of users. This role offers the unique opportunity to redefine how users search and discover everything from the most interesting immersive experiences and digital avatars in our Marketplace to personalized advertising. You will solve a diverse range of high-scale ranking, retrieval, and personalization problems across our platform. We combine cutting-edge research —including deep learning, generative AI, and reinforcement learning techniques— with large-scale engineering to bridge experimentation and production; you'll design algorithms that operate at massive scale and shape the next generation of recommender systems for user-generated content.…

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