Senior Machine Learning Engineer, GenAI 3D

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.

As a Senior Machine Learning Engineer on the Model Serving team for Roblox Cube, you will be responsible for building the production systems that enable the safe and reliable deployment of our cutting-edge 3D and 4D generative AI models. You will design, implement, and scale infrastructure to orchestrate the complex workflow for producing high-fidelity 3D and 4D textured meshes that are compliant with Roblox policies. We are seeking accomplished MLEs with a passion for ambiguous problems, curiosity to work in new spaces like 3D GenAI and a commitment to writing high-quality, well-tested code to solve complex GenAI serving challenges at scale.

You Will:

• Design, build, and own critical components of the serving infrastructure supporting our generative AI efforts focusing on usability, reliability, scalability, and performance.
• Implement robust pipelines for collecting datasets and evaluating to build safe and compliant multimodal AI systems.
• Drive improvements in model serving & evaluation infrastructure architecture, engineering best practices, and operational excellence.

You have:

• 5+ years of experience in software development
• 3+ years of experience developing systems at scale, shipping products to production.
• Proven experience deploying ML models in production at scale and
• Experience with fine-tuning VLMs, LLMs and large multi-modal LLMs for improving the quality & safety of models.
• Are proficient in Python and familiar with frameworks such as PyTorch, JAX, HuggingFace libraries.
• Are passionate about the potential of Generative AI, particularly in creative domains like 3D/4D content.
• Are comfortable operating in a dynamic, fast-paced environment.
• Bachelor’s degree or equivalent experience in Computer Science, Applied Math, Physics, Engineering, Statistics, or other technical field is a plus.

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$238,520—$289,460 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 for all candidates during the interview process.