Job Description

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators.

At Roblox, we’re building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device.We’re on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there.

A career at Roblox means you’ll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone.

Harmony is the critical subsystem responsible for ensuring a stable, enjoyable, and interactive experience for Roblox users across all devices. By intelligently orchestrating and adjusting presentation quality from high-fidelity rendering down to basic interaction. This role offers a unique opportunity to pioneer the application of machine learning to real-time, low-latency systems optimization.

You will define the ML strategy for resource management within the engine, moving beyond traditional heuristics to build adaptive systems. You will solve complex, high-stakes resource allocation and quality scaling problems across memory, CPU/GPU compute, battery life, and network bandwidth. We aim to leverage predictive modeling and optimization techniques to handle highly dynamic content and opaque resource signals from the OS, transforming the stability and quality of the global Roblox experience.

You Will

• Analyze massive-scale engine performance and user engagement telemetry to drive the team’s strategic roadmap, using data insights to prioritize high-impact optimization targets
• Design and implement machine learning models to predict and manage critical engine resource constraints in real time.
• Develop adaptive control systems that use ML outputs to dynamically adjust engine fidelity parameters, maximizing user experience while maintaining stability and low latency.
• Collaborate with core engine and performance engineering teams to integrate ML solutions directly into the critical path of gameplay across multiple platforms.
• Define the architectural roadmap for introducing and scaling ML infrastructure within the Harmony subsystem, ensuring reliable operation at massive scale.

You Have

• Expertise in one or more areas of applied machine learning: reinforcement learning (RL) for control systems, resource scheduling, predictive modeling (especially time-series analysis for resource usage), or real-time optimization.
• Proficiency in one or more programming languages (e.g., C++, Python, Go, Java) and experience designing, building, and deploying ML models in a performance-critical environment.
• A strong understanding of low-latency, systems-level concepts (e.g., memory management, threading, operating system signals) is a significant advantage.
• A track record of solving complex optimization problems or experience integrating AI/ML into core engineering products, preferably in gaming or mobile environments.

Apply now to be considered for anticipated positions.

You may redact age, date of birth, and dates of attendance/graduation from your resume if you prefer.

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For roles that are based at our headquarters in San Mateo, CA: The starting base pay for this position is as shown below. The actual base pay is dependent upon a variety of job-related factors such as professional background, training, work experience, location, business needs and market demand. Therefore, in some circumstances, the actual salary could fall outside of this expected range. This pay range is subject to change and may be modified in the future. All full-time employees are also eligible for equity compensation and for benefits as described on this page

Annual Salary Range $192,890—$238,520 USD

Roles that are based in an office are onsite Tuesday, Wednesday, and Thursday, with optional presence on Monday and Friday (unless otherwise noted).

Roblox provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. Roblox also provides reasonable accommodations to candidates with qualifying disabilities or religious beliefs during the recruiting process.