Technical Director, Economy ML & GenAI Systems

The Briefed; San Mateo (CA); On-site; USD 320,000 - 480,000; Full time

Benefits offered by this job

Equity compensation

Full-time benefits

Job summary

Roblox is seeking a Distinguished Engineer / Technical Director to lead strategy and technical direction for Economy ML systems at massive scale, focusing on recommendations, infrastructure, and Generative AI applications. You will shape retrieval, ranking, and LLM-powered personalization across economy surfaces, collaborating with cross-functional teams while maintaining a practical, users-first approach.

This role requires hands-on ML expertise and system design to drive long-term tech

Qualifications

• 10+ years of experience delivering and improving large-scale search and recommendation systems.
• Experience building and deploying ML models with billions of parameters into production.
• Ability to drive technical decisions across multiple teams with empathy and consensus-building.
• First-principles thinking focused on user needs, including Roblox users and creators.
• Generalist who can adapt to various languages and technologies.
• Willingness to tackle data or ML problems hands-on as they arise.
• Creative and strategic approach to hard problems, simplifying complexity.
• BS in Computer Science or related discipline.

Responsibilities

• Set the technical direction for ML solutions behind core economy experiences: personalization, ranking, generative modeling, and more.
• Write specs for new features, define AI strategy, advance recommendation tech, and drive business outcomes.
• Build and evolve infrastructure for training, serving, and evaluating traditional ML and Generative AI models.
• Co-design models and systems at the intersection of architecture and infrastructure with cross-functional teams.
• Lead engineers through technical direction and mentorship to foster engineering excellence.
• Be the tech stack authority ensuring new solutions are built the right way.
• Collaborate with Roblox teams to build community- and company-first products.
• Balance researching new technologies with practical product delivery.
• Represent Roblox in industry and communities.

Skills

Large-scale search

ML infrastructure

Embedding-based retrieval

Transformers

LLM-based workflows

Generative AI

Education

BS in Computer Science

Job description

Roblox is seeking a Distinguished Engineer / Technical Director to lead strategy and technical direction for Economy ML systems at massive scale, focusing on recommendations, infrastructure, and Generative AI applications. You will shape retrieval, ranking, and LLM-powered personalization across economy surfaces, collaborating with cross-functional teams while maintaining a practical, users-first approach.

This role requires hands-on ML expertise and system design to drive long-term tech