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Senior Machine Learning Engineer, Safety Core Data at Roblox
RobloxSan Mateo, CA, United States·5d ago
SeniorFull-timeRustAWSMachine LearningGitAIML
Salary Range
$132,600 - $179,400 /year
This salary is estimated based on similar roles. The actual salary may vary.
About the Role
We are looking for a Senior Machine Learning Engineer to join our Safety organization at Roblox. This role focuses on building and maintaining large-scale AI systems that safeguard platform integrity and user trust by developing our Safety Foundation Model.
Key Responsibilities
- →Design, build, and own core components of our Safety AI Systems, powering large-scale safety data generation, labeling, and evaluation
- →Fine-tune open-weight multimodal LLMs 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
- →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
Requirements
- ✓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
- ✓Hands-on experience with fine-tuning VLMs, LLMs, or large multimodal models is a plus
- ✓Experience working with data quality, evaluation, synthetic data, or ML infrastructure in safety systems is a plus
