Roblox

Principal/Senior Machine Learning Scientist - Search and Discovery

San Mateo, CA, United States. Posted 8 months ago

The role

You will design and implement machine learning solutions for agentic search and discovery systems. You will innovate on large models like LLMs and VLMs to power recommendation, query understanding, and content understanding.

What you will do

  • Design and implement machine learning solutions that power agentic search and discovery systems.
  • Design and implement large scale recommendation models.
  • Innovate on LLMs, VLMs, autoregressive models, or other large models.
  • Design eval and post-training loops for ranking, query understanding, and agentic systems.
  • Balance researching new technologies with practical product integration.
  • Collaborate with other teams to build products with a community first approach.
  • Communicate with the industry and communities as an ambassador for Roblox.

Required qualifications

  • 7+ years of experience for principal or 4+ years of experience for senior designing and building scalable machine learning solutions.
  • Experienced with transformer based model training, inference, and product integration.
  • Ability to break down product requirements into iterative deliverable stages.
  • BS, MS, or PhD in Computer Science or a related discipline or equivalent experience.
  • Initiated and facilitated challenging technical decisions across multiple teams and organizations.
  • Start with the needs of the user.
  • A creative and strategic approach to solving hard problems.

Nice to have

  • Depth in recommendation, search retrieval and ranking, or LLM post-training and agentic systems

Benefits

  • Equity compensation
  • Benefits as described on this page

Before you apply

  • Company may not be able to employ candidates who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.

About the company

Roblox is building tools and a platform that empower a global community of developers and creators to bring immersive digital experiences to life. The company aims to connect a billion people with optimism and civility.

Principal/Senior Machine Learning Scientist - Search and Discovery at Roblox | JobZoey