jobs

Research Engineer, Post-Training (All Industry Levels)

About the role and teamJoining us as a Research Engineer on the Post-Training team, you'll be diving into the exciting world of fine-tuning AI models, optimizing their performance, and ensuring they meet the highest standards of quality and

Company

Character.AI

Location

Redwood City or New York City

Status

Open

Posted

2024-01-24T05:51:56.1+00:00

Character.AI is hiring a Research Engineer for its Post-Training team, open to all industry levels but requiring a PhD or equivalent. The person develops alignment algorithms and loss functions, writes data pipelines turning web data into model-ingestable form, identifies quality signals from real-world performance, and designs sampling methods to improve serving efficiency of large generative models. The posting asks for production and training code, GPU experience across training and serving, data infrastructure work, and knowledge of reinforcement learning and transformers. Hybrid in Redwood City or New York City.