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Research Engineer, Post-Training (All Industry Levels)

Character.AI

Mid levelRedwood City or New York City

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About Character.AI

Character.AI empowers people to connect, learn, and tell stories through interactive entertainment.

What you'd do

Develop alignment algorithms and loss functions
Write data pipelines for diverse web data
Identify quality signals for model performance
Design sampling algorithms for generative models

What they're looking for

PhD or equivalent
Experience with GPUs
Strong understanding of modern machine learning techniques
Track-record of exceptional research or creative applied ML