# AI Anime Researcher - LLM at Spellbrush

- Company: Spellbrush
- What the company does: magic anime pictures. Backed by Y Combinator.
- Company website: https://spellbrush.com
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco or Tokyo
- Work setup: On-site
- Posted: 2025-09-02
- Apply by: 2026-10-08
- Apply: https://jobs.ashbyhq.com/spellbrush/b57ecf9c-6c33-4454-a14f-64f0b9398ef2
- Page: https://www.1752.vc/careers/jobs/spellbrush-ai-anime-researcher-llm/

## About the role

You will join a small but extremely talented team to define a new kind of video game experience. You'll work alongside top otaku minds in the industry, including the creator of Warudo and Cytoid , a Google Deepmind veteran behind Project Astra , and top-tier AI researchers. As an early member of this team, you will have significant artistic and research freedom to shape what could become the next-generation LLM-driven storytelling experience.

## What they're looking for

- You have a deep understanding of LLM training and evaluation with attention to detail
- Bonus if your post training work is focused on roleplay
- Bonus if you have worked on latency optimization. We need to interact with the character in real time
- Whether that is by designing a RLHF-style voting system, or by finding implicit signals in the human-AI interaction logs
- Training LLMs requires both research and engineering. Experiences in building data processing backend, deterministic and checkpointable data loader, sharding, memory saving techniques, scalable benchmarking and checkpoint selection, are all helpful

Tags: Research Team