Roblox · 22 hours ago
[2026] Senior Machine Learning Engineer, Recommendation Systems - PhD Early Career
San Mateo, CA
Full-time
Hybrid
Senior Level
$196K/yr - $242K/yrRoblox is a platform that empowers users to create and explore immersive digital experiences. They are seeking a Senior Machine Learning Engineer to design and implement large-scale recommendation systems, utilizing deep learning models and collaborating with various teams to enhance user engagement and retention.
3D TechnologyGamingMetaverseOnline GamesSoftwareVideo Games
Responsibilities
Design and implement large-scale recommendation systems that power discovery across Roblox’s surfaces — experiences, avatars, and creator content
Develop deep learning models for ranking, retrieval, and personalization using approaches in multimodal models, LLMs, and generative AI
Collaborate with applied researchers, engineers, and product teams to advance experimentation and accelerate innovation
Translate research into production systems that impact hundreds of millions of daily active users
Work backward from user and product needs to deliver ML solutions that drive engagement, retention, and ecosystem growth
Qualification
Required
Possessing or pursuing a PhD in computer science, engineering, or a related field, with a thesis aligned to Roblox's research areas
Expertise in one or more areas: recommender systems, search systems, information retrieval, or generative models (e.g., LLMs, VLMs, VLAs)
Ability to design and architect systems for efficient personalization and user interest modeling using advanced attention mechanisms (e.g., sparse/linear attention)
A strong research track record, evidenced by multiple publications and presentations in top-tier, peer-reviewed venues (e.g., SIGIR, KDD, RecSys, ICLR, ICML, NeurIPS)
Proficiency in one or more programming languages (e.g., Python, C++, Go, Java) and experience building and optimizing large-scale systems
Benefits
Equity compensation
Benefits as described on this page
Company
Roblox
Roblox is an online gaming and entertainment platform that offers a shared digital experience that brings people together through play.
Founded in 2004
1001-5000 employees
H1B Sponsorship
Roblox has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (191)
2024 (111)
2023 (139)
2022 (153)
2021 (91)
2020 (92)
Funding
Current Stage
Public CompanyTotal Funding
$874.45MKey Investors
Andreessen HorowitzAltos Ventures
2024-10-01Post Ipo Equity
2022-04-12Series Unknown· $17.71M
2021-08-11Series Unknown
Leadership Team
David Baszucki
Founder and CEO
Anupam Singh
VP Engineering, AI Platform, Infrastructure
Recent News
2025-12-30
Company data provided by crunchbase