# Research Engineer, Post-Training (All Industry Levels) at Character.AI

- Company: Character.AI
- What the company does: Backed by Lightspeed and a16z.
- Company website: https://character.ai/
- Type: Startups (AI role)
- Level: Mid level
- Location: Redwood City or New York City
- Work setup: Remote
- Pay: $225K to $400K base salary per year (USD)
- Posted: 2024-01-24
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/character/449bf7c1-41d7-47a4-89a7-0ee0b31f5918
- Page: https://www.1752.vc/careers/jobs/character-ai-research-engineer-post-training-all-industry-levels/

## About the role

Joining 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 efficiency. Your work will directly contribute to our groundbreaking advancements in AI, helping shape an era where technology is not just a tool, but a companion in our daily lives.

## What they're looking for

- "All Industry Levels": have at least PhD (or equivalent)
- Write clear and clean production-facing and training code
- Experience working with GPUs (training, serving, debugging)
- Experience with data pipelines and data infrastructure
- Strong understanding of modern machine learning techniques (reinforcement learning, transformers, etc)
- Track-record of exceptional research or creative applied ML projects

Tags: Technical Staff - ML