Roblox
Senior Machine Learning Engineer - Economy ML
San Mateo, CA, United States. Posted 7 months ago
The role
You will build models that power ranking, personalization, pricing, and optimization across Roblox's economic surfaces. This includes designing retrieval, ranking, and generative recommendation models to personalize item and widget recommendations.
What you will do
- Design and iterate on modern retrieval, ranking, and generative recommendation models.
- Make models efficient to train and serve at scale.
- Design and ship end-to-end ML solutions across Economy surfaces.
- Develop models and policies that optimize pricing, conversion, and revenue.
- Design and run robust experiments like A/B tests and multi-cell experiments.
- Set up monitoring for data and prediction quality in production.
- Partner cross-functionally with Product, Backend, Data Science, and Design teams.
- Contribute to the technical direction of the Economy ML team.
- Mentor other engineers through design reviews, code reviews, and hands-on guidance.
Required qualifications
- 3+ years of industry experience building recommendation, search, or ranking systems for a high-scale product.
- Deep, hands-on expertise in modern recommender architectures.
- Comfortable with multi-GPU training and tradeoffs between model quality, latency, and cost.
- Fluent in the ML lifecycle.
- Strong coding skills in Python and PyTorch.
- Ability to design experiments and diagnose metric movements.
Nice to have
- Experience with pricing or content understanding
- Experience applying LLM or multimodal techniques to recommendation
Benefits
- Equity compensation
- Benefits as described on this page
Before you apply
- Company may not be able to employ candidates who have United States work authorization related to certain U.S. visa categories, or support future H-1B sponsorship at this time.
About the company
Roblox builds tools and a platform that empower a global community of developers and creators to bring immersive digital experiences to life. The company aims to connect a billion people with optimism and civility.