Research Engineer, Post-training (all Industry Levels)

Research Engineer on the Post-Training team at Character AI, responsible for fine-tuning AI models, optimizing performance, and developing alignment algorithms. This role involves working with data pipelines, identifying quality signals, and designing sampling algorithms for large generative models.

Skills and focus areas

• alignment algorithms
• loss functions
• data pipelines
• data processing
• quality signals
• sampling algorithms
• generative models
• production code
• training code
• gpu
• data infrastructure
• machine learning