[2025] Senior Machine Learning Engineer, Discovery - PhD New Grad

The Discovery team at Roblox plays a critical role in connecting our community to the experiences, content, and creators they love. As the Discovery Core Product team, we work closely with infrastructure teams to power major search and discovery surfaces such as the homepage, experience details page, charts, and search.

Our mission is to drive Roblox’s top-line growth by improving user engagement, retention, and ecosystem diversity. Over the next few years, we aim to completely redesign Roblox’s primary search and discovery surfaces to elevate the user experience. As part of the Discovery Core Product team—a blend of product and applied research expertise—this role involves tackling some of the most challenging problems in search, discovery, and content understanding.

You Will:

• Develop cutting-edge machine learning models for recommendation systems, search systems, image/video understanding, and text understanding.
• Apply advanced techniques in LLMs and multimodal learning to improve content and user understanding.
• Create end-to-end solutions to enhance search and discovery across key surfaces like the homepage, search, and experience details page.
• Ensure the scalability, reliability, and extensibility of our machine learning systems.

You Have:

• Possess or pursuing a Ph.D. in Computer Science, Computer Engineering, Data Science, or a similar technical degree.
• Proficiency in one or more programming languages such as Go, Python, C++, or C#
• Expertise in one or more of the following areas: recommendation systems, information retrieval, text/image/video understanding, or GenAI/foundation models.
• Strong background in advanced techniques such as LLMs, multimodal learning, and other state-of-the-art machine learning methods.
• Experience building and working on end-to-end ML pipelines, including data processing, modeling, and production deployment.
• Published and presented peer-reviewed articles in top-tier venues, such as NeurIPS, ICML, ICLR, ACL, EMNLP, CVPR, ICCV, KDD, WWW and RecSys.

You may redact age, date of birth, and dates of attendance/graduation from your resume if you prefer.