Senior ML Architect for Search & Discovery

Roblox Corporation; San Mateo (CA); On-site; USD 419,000 - 458,000; Full time

Job summary

Roblox Corporation is seeking a Distinguished Engineer/Technical Director on Discovery to set the technical vision for machine learning across search and discovery. You will drive content distribution and personalization at scale for billions of users and developers.

You will lead by example, co-design models and systems, and collaborate with cross-functional teams to push frontier in embedding-based retrieval, transformers, and LLM workflows while delivering real business impact.

Qualifications

• Experience delivering large-scale search and recommendation systems.
• Ability to translate long-term requirements into iterative deliverables.
• Strong collaboration across multiple teams and stakeholders.

Responsibilities

• Own the technical direction for ML solutions powering search and recommendations.
• Define features/specs and AI strategy to improve candidate generation and ranking.
• Build and evolve training, serving, and evaluation infrastructure for ML models.
• Lead engineers through technical direction and foster engineering excellence.
• Collaborate with Roblox teams to align with product goals.
• Balance research with practical deployment to Roblox products.

Skills

10+ years experience

Large-scale ML models

ML for search & recommendations

Team leadership

Education

BS in Computer Science

MS/PhD preferred

Job description

Roblox Corporation is seeking a Distinguished Engineer/Technical Director on Discovery to set the technical vision for machine learning across search and discovery. You will drive content distribution and personalization at scale for billions of users and developers.

You will lead by example, co-design models and systems, and collaborate with cross-functional teams to push frontier in embedding-based retrieval, transformers, and LLM workflows while delivering real business impact.