Senior Machine Learning Engineer - Economy ML
Core
Building the ML backbone for Roblox's virtual economy, powering ranking, personalization, pricing, and optimization across Marketplace, Payments, and Developer Monetization.
Role type
Senior IC machine learning engineer (economy/recommendation)
Builds
ML systems for intelligent pricing, personalized storefronts, dynamic layout optimization, and avatar content understanding
Domain
Gaming / Virtual Economy / Recommendation Systems
Deliverable
production ML models
Required skills
modern recommender architectures (sequence models, multi-task ranking, large sparse embeddings), multi-GPU training, Python, PyTorch, A/B testing design, model monitoring and drift detection, cross-functional collaboration
Preferred skills
pricing or content understanding, LLM or multimodal techniques for recommendation
Technologies
PyTorch, Python, multi-GPU training frameworks
Responsibilities
Design and iterate retrieval, ranking, and generative recommendation models; optimize pricing, conversion, and revenue; run robust experiments (A/B tests); maintain model health in production; mentor other engineers; contribute to technical direction and experimentation strategy
Seniority
Senior, hands-on IC
