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

What this role involves

Roblox is hiring a Senior Machine Learning Engineer for Recommendation Systems, targeting PhD early career candidates. The role involves designing and implementing large-scale recommendation systems for discovery across Roblox's platform, using deep learning and generative AI. It requires a PhD in a related field and expertise in recommender systems, search, or generative models.

Skills this posting asks for

• recommender systems
• deep learning
• python
• c++
• go
• java
• large-scale systems
• ranking
• retrieval
• personalization
• multimodal models
• llms
• generative ai
• attention mechanisms
• reinforcement learning
• information retrieval
• search systems
• machine learning
• sparse linear attention
• vlm
• vla

Requirements

• Level: senior

From the employer’s posting

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators.&nbsp; <span…