Tech Stack

Description

You will set the technical direction for ML systems powering core economy experiences at Roblox, including personalization, ranking, and generative modeling. You'll build and evolve infrastructure for training and serving models at massive scale, solving unique challenges in 3D content and virtual economy personalization.

Requirements

• 10+ years in software engineering or ML infrastructure with large-scale ML systems focus
• Deep expertise in recommendation systems, ranking infrastructure, or real-time personalization engines
• Hands-on experience with Generative AI: transformer-based models, LLMs, embeddings, or RAG pipelines
• Proven experience with distributed training, model deployment, and GPU-accelerated workflows
• Strong understanding of ML system architecture: data pipelines, feature stores, inference optimization

Responsibilities

• Set technical direction for ML systems powering core economy experiences
• Build and evolve infrastructure for training, serving, and evaluating ML and GenAI models
• Partner with GenAI teams to explore multi-modal embeddings, avatar generation, and RAG
• Lead efforts to optimize ML system performance: low-latency serving, efficient GPU training, cost-aware inference
• Guide development of robust ML pipelines, online feature stores, and experimentation platforms