Roblox · 12 hours ago
Senior Machine Learning Engineer, Safety Core Data
San Mateo, CA
Full-time
Hybrid
Senior Level
$242K/yr - $294K/yr
5+ years expRoblox is a platform that empowers a global community to create and share immersive digital experiences. The Senior Machine Learning Engineer will design and build core components of Safety AI Systems to ensure platform integrity and user trust, leveraging advanced machine learning techniques to mitigate safety risks.
3D TechnologyGamingMetaverseOnline GamesSoftwareVideo Games
Responsibilities
Design, build, and own core components of our Safety AI Systems, powering large-scale safety data generation, labeling, and evaluation with a focus on reliability, scalability, and performance
Fine-tune open-weight multimodal LLMs (text, image, video, and voice) and deploy them as agents to generate synthetic datasets and perform high-quality automated labeling at scale
Build robust pipelines for curating and evaluating multimodal training data, including human-in-the-loop systems that enable safe, compliant, and continuously improving AI
Develop benchmarks and evaluation frameworks to measure multimodal model behavior, data quality, and downstream safety impact
Architect systems that support continuous learning, enabling weekly gated rollouts and tight feedback loops from real-world failures
Partner closely with engineers, product managers, policy experts, and safety specialists to translate complex safety challenges into scalable, production-grade AI solutions
Help define best practices, technical standards, and data culture for next-generation safety AI, building foundational systems from the ground up and driving impact quickly
Qualification
Required
5+ years of experience designing, building, and deploying large-scale machine learning systems in production environments
A graduate degree or equivalent experience in Computer Science, Engineering, or a related technical field
Strong communication skills and a collaborative, solution-oriented approach to problem solving
Preferred
Hands-on experience with fine-tuning VLMs, LLMs, or large multimodal models to improve model quality, safety, and performance is a plus
Experience working with data quality, evaluation, synthetic data, or ML infrastructure in safety systems is a plus
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.
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 (240)
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
CEO & Founder
Michael Guthrie
CFO
Recent News
2026-01-16
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2026-01-16
Yahoo Finance
2026-01-16
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