Principal Research Engineer, Post-Training
Character.AI is hiring for Principal Research Engineer, Post-Training in Redwood City, CA. Staff level. First seen August 6, 2026; open as of November 12, 2026. Jobs taken straight from company career pages — no aggregator in between.
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- Company
- Character.AI
- Where
- Redwood City, CA
- Level
- Staff
- First seen
- August 6, 2026
- Listed via
- Ashby
What the posting says
You will lead initiatives spanning data, algorithms, infrastructure, and evaluation, helping define how our models learn from feedback and improve over time. This is a highly cross-functional role that combines deep technical expertise with organizational leadership. You will partner closely with researchers, engineers, product teams, and infrastructure teams to identify the highest-leverage opportunities for improving model performance and user experience. Your work will directly shape the conversational experiences of millions of users every day. At Character.AI http://Character.AI, you…
Read more and apply on Character.AI's site
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