Senior Machine Learning Engineer, Roblox
2026, Systems, Embodied AI/NPCs, ML Platform, PhD Early Career
$196.8-243.3k
+ Equity
More information about location
Office located in San Mateo, CA
Online gaming and entertainment platform
Be an early applicant
Online gaming and entertainment platform
1001+ employees
Be an early applicant
$196.8-243.3k
+ Equity
More information about location
Office located in San Mateo, CA
1001+ employees
Company mission
To connect a billion people with optimism and civility.
Role
Who you are
- Possessing or pursuing a Ph.D. in Computer Science, Computer Engineering, Mathematics, Statistics, or a related technical field, with a thesis aligned to Roblox’s research areas
- Built end-to-end ML pipelines and managed model inference and deployment
- Experience with novel datasets, and building real-world agentic applications
- Scaled high-performance, high-availability architectures
- Handled infrastructure using Kubernetes and major cloud providers (AWS, Azure, or GCP)
What the job involves
- Creator Services Machine Intelligence Team: The Machine Intelligence team is building an NPC system that can (1) play any Roblox game and (2) perform real-time inference efficiently enough to support deployment to all Roblox players
- ML Platform Team: The Foundation AI Group is on a mission to establish Roblox as the standard for 3D foundational models (3DFMs), democratizing creation by making it simple for anyone to generate high-quality, immersive 3D experiences using AI
- The AI Platform team is a foundational part of this vision, supporting hundreds of ML use cases and billions of inferences daily across Discovery, Safety, Engine, and more. We are seeking exceptional PhD new graduates to drive innovation across three critical areas: AI Platform, Distributed Inference Systems
- As a Senior Machine Learning Engineer, you will be a key contributor to building the cutting-edge systems that power AI at Roblox
- Creator Services Machine Intelligence Team
- Develop Scale Data Pipelines: Design, build and maintain robust data pipelines to collect complex 3D game states and real-time player actions across the platform
- Train Novel Architectures: Solve the feature extraction across games for NPC model in a general and scalable way and drive model training speed for novel, sophisticated deep learning architectures
- Optimize Real-Time Inference: Engineer high-performance model inference solutions to support the seamless deployment of 10s to 100s of autonomous NPCs in real-time environments
- ML Platform Team
- Track 1: AI Platform Projects
- Pioneer next-generation AI tooling to enhance the efficiency, cost, and usability of ML@Roblox
- Build and maintain core platform components: Serving Layer, Model Registry, Pipeline Orchestrator, and Training/Inference control planes
- Design great developer experiences (paved-road templates, tooling, visualizations) to reduce time-to-production and ensure foundational AI systems are scalable and reliable
- Track 2: Distributed Inference & Systems Optimization
- Architect and implement scalable distributed inference systems for efficiently serving LLMs and Large Recommender Models at massive scale
- Optimize our inference engine to serve millions of QPS at low latency
- Conduct deep, low-level performance analysis and optimize ML models (using techniques like continuous batching, speculative decoding, and quantization) and systems on GPU architectures to maintain peak performance and stability
Our take
Online gaming may be a well-established space, but Roblox has distinguished itself as a leader by empowering its community to build, share, and profit from their own creations, turning game development into an accessible, rewarding ecosystem for millions of users.
In addition to standard games, the platform offers virtual worlds and other experiences to explore and interact with. Its platform provides an online ecosystem for millions to create, socialize, chat, and explore immersive experiences with friends. In fact, in the US its used by two-thirds of children aged 9 to 12.
While the platform does face scrutiny over users safety (particularly given its young audience) the company's efforts to strengthen parental controls and open dialogue through initiatives like its new Parents Council signal a growing commitment to addressing these challenges. At the same time, its financial performance and creator-focused investments underscore a business in very strong health. With record payouts to developers, an expanding older player base, and a platform that increasingly rewards creative talent, Roblox's trajectory remains one of innovation and impressive growth.
Freddie
Company Specialist at Welcome to the Jungle
Insights
25% employee growth in 12 months
Company
Funding (last 2 of 9 rounds)
Jan 2021
$520m
SERIES H
Feb 2020
$150m
SERIES G
Total funding: $922.8m
Company HQ
South San Mateo, San Mateo, CA
Leadership
David Baszucki
(Founder & CEO)Studied Electrical Engineering at Stanford before founding Knowledge Revolution in 1990, where they spent 9 years as CEO. They worked as VP of MSC.Software for 2 years, and started Roblox in 2005.
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