# Research Engineer, AI Safety & Alignment 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, CA
- Work setup: Remote
- Pay: $225K to $400K base salary per year (USD)
- Posted: 2025-10-03
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/character/a7ddb640-466f-4a1f-9a94-7465006aad05
- Page: https://www.1752.vc/careers/jobs/character-ai-research-engineer-ai-safety-and-alignment/

## About the role

Joining us as a Research Engineer, you'll be at the forefront of tackling one of the most critical challenges in AI today: safety and alignment. Your work will be pivotal in understanding and mitigating the risks of advanced AI, conducting foundational research to make our models safer, and solving the core technical problems of AI alignment —ensuring our models behave in accordance with human values and intentions.

## What they're looking for

- Hold a PhD (or equivalent experience) in a relevant field such as Computer Science, Machine Learning, or a related discipline
- 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, particularly transformers and reinforcement learning, with a focus on their safety implications
- Are passionate about the responsible development of AI and dedicated to solving complex safety challenges

Tags: Technical Staff - ML