Principal Applied Research Engineer

Responsibilities

• Own the end-to-end technical direction for offline video generation, spanning pre-training and post-training, resolving the artificial boundary between those two stages in service of shipping better models faster.
• Partner with research leadership and team leads to define a unified long-term roadmap, broken into achievable objectives, and drive execution against it.
• Identify the most critical technical gaps across the video generation pipeline and jump in to unblock them, whether that means architectural decisions, training stability, post-training alignment, or cross-team coordination.
• Increase the velocity at which research ships to product: accelerate problem-solving, improve research-to-production handoffs, and increase visibility of research output in partnership with PMs.
• Coach and elevate more junior researchers and engineers toward senior technical thinking and execution.
• Help shape team structure and refine processes to enable high-velocity, cohesive execution across research.
• You'll thrive in this role if you have
• A proven track record training large-scale video generation models from scratch, across multiple nodes, at the scale of millions of hours of data.
• Deep experience with post-training techniques at scale: RLHF, GRPO, DPO, and the judgment to know when and how to apply them.
• A proven track record data quality and you are not reluctant to question it.

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