About the company
Roblox is building the tools and platform that empower a global community of developers and creators to bring 3D immersive experiences to life.
Responsibilities
- Own model strategy and routing for Build, selecting the right model per creation task based on quality, capability, latency, cost, and safety
- Lead model adaptation across the Applied AI org: fine-tuning, distillation, synthetic data generation, human feedback pipelines, preference optimization
- Drive CodeGen capabilities: AI systems that understand creator intent, reason across multi-file experiences, execute tools
- Build LayoutGen intelligence: turn creator intent into coherent 3D scenes with spatial reasoning and placement
- Own evaluation as a core technical discipline: benchmarks, quality metrics, judge methodologies, experiment infrastructure, human evaluation pipelines
- Close the feedback loop between model development, evaluation, and production
Requirements
- 10+ years of experience in machine learning and AI, with 5+ years in senior technical leadership roles
- Deep technical grounding in LLM post-training (RLHF, DPO, distillation), model routing and adaptation, agentic systems, code generation, or evaluation science
- Demonstrated experience building and leading organizations spanning AI research scientists and production engineers
- Strong evaluation fluency and experience building eval frameworks
- Experience operating cross-functionally in complex technical organizations
Conditions
- Based at headquarters in San Mateo, CA
- Annual salary range $525,510 – $573,000 USD, plus equity compensation and benefits