# AI Anime Researcher - LLM

**Company:** [Spellbrush](https://hotfix.jobs/companies/spellbrush)
**Location:** San Francisco, CA
**Role:** AI Research
**Skills:** LLMs, RLHF, Post-Training, Roleplay, Latency Optimization, Data Processing, Sharding, Memory Optimization, Benchmarking, Human Feedback
**Posted:** 2025-09-02

> Conducts advanced LLM research for post-training, roleplay, and real-time integration into an anime-style 3D adventure game AI companion. Requires deep LLM expertise, anime passion, and ability to build scalable infrastructure on a small onsite team.

## Job Description

## Responsibilities
- Define new LLM-driven storytelling experiences for 3D first-person adventure game with AI companion integrated into gameplay, puzzles, and narrative.
- Conduct LLM post-training research focused on roleplay, real-time interaction, and anime character generation.
- Gather human feedback via RLHF-style systems or interaction log analysis.
- Build LLM infrastructure including data processing backends, deterministic data loaders, sharding, memory optimization, scalable benchmarking, and checkpoint selection.
- Balance research exploration with product development for low-latency, real-time AI companion interactions.

## Requirements
- Published or industry experience with LLM post-training.
- Deep understanding of LLM training and evaluation.
- Experience working on small, fast-paced teams.
- Comfortable with in-person collaboration.
- Love for anime and anime aesthetic.

## Nice-to-Haves
- Post-training work focused on roleplay.
- Latency optimization for real-time interactions.
- Experience gathering human feedback (RLHF voting systems, interaction logs).
- LLM infrastructure experience (data processing, sharding, memory saving, benchmarking).

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