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# Principal Machine Learning Engineer, Asset Safety New

- **Company:** Roblox
- **Location:** San Mateo, CA, United States
- **Experience:** Expert
- **Salary:** $295,250.0 - $345,040.0
- **Contract:** Permanent contract
- **Skills:** Computer Vision, Cursor (Graphical User Interface Elements), Machine Learning, Language Modeling, Backend, Machine Learning Operations, Data Pipelines
- **Published:** September 23, 2026
- **Apply:** https://www.gamesjobsdirect.com/job/roblox/principal-machine-learning-engineer-asset-safety/359382

## About the Role

* 8+ years of experience designing, developing, and operating large-scale, high-impact machine learning systems in a production environment.
 * A proven track record of successfully setting the long-term technical direction for an entire ML domain, demonstrating the ability to take ambiguous problems from concept to scaled production impact.
 * Deep expertise in advanced ML architectures and techniques, including Computer Vision (CV) and/or Vision-Language Models (VLMs)
 * Expertise in architecting scalable, real-time ML inference services and robust data pipelines
 * Demonstrated success in leading and resolving high-stakes, cross-functional conflicts and technical disagreements, with an ability to build consensus among diverse stakeholders.
 * Exceptional product sense and strategic planning ability: able to translate platform safety requirements into an achievable, iterative technical roadmap.

You are:

 * A Visionary Architect: Capable of synthesizing complex business and safety goals into a clear, compelling, and actionable technical strategy.
 * A Pragmatic Builder: You are scrappy and impact-oriented. You view undefined data and messy systems as opportunities to build structure rather than blockers to progress.
 * Comfortable with Ambiguity: You thrive in undefined or open-ended problem spaces, providing structure, clarity, and decisive direction to your teams.
 * An Inspiring Leader: Passionate about developing the next generation of technical leaders, managers, and engineers.
 * An Executive Communicator: Highly effective at communicating complex technical concepts to both engineering teams and non-technical executive leadership.
 * Committed to Ethical AI: Dedicated to building ML systems that are fair, transparent, and operate with the utmost responsibility toward user safety and platform civility.

## Description

* Define and Own the Technical Vision: Define and lead the multi-year technical vision, architectural strategy, and execution for machine learning solutions in Content Safety, ensuring these systems proactively and effectively detect and mitigate violative content at massive scale.
 * Strategic Stakeholder Partnership: Collaborate with executive-level Product, Data Science, Policy, and Operations leaders to define and prioritize the strategic machine learning roadmap, influencing product strategy and demonstrating the impact of ML on user trust and safety outcomes.
 * Lead Innovation: Oversee the adoption and safe deployment of innovative machine learning techniques (e.g., transfer-learning, self-supervised learning, quantization, LoRA, distillation).
 * Drive End-to-End Product Development: You will not just model; you will build. You will work cross-functionally to construct datasets from scratch where none exist, build auto-labeling pipelines, and ship solutions to solve novel technical problems.
 * Ship Code, Not Just Models: Expect to spend roughly 30-40% of your time on backend and integration work. You will be responsible for integrating your work into the production stack, leveraging modern AI coding tools (e.g., Cursor) to accelerate velocity and handle infrastructure complexity


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