HPC/ML Infrastructure Engineer
Lead bringup, administration, and operations for a large-scale anime AI training GPU cluster. Bridge researchers and bare-metal systems using SLURM, filesystems, networking, and Linux sysadmin skills.

AI-powered anime game studio
Spellbrush builds anime-style video games using generative AI to enhance human artistry. They develop titles like 3D first-person adventures and mobile tactics games with integrated LLMs for storytelling and AI companions. As creators of niji·journey, they focus on balanced gameplay and stunning visuals for gamers and artists.
Lead bringup, administration, and operations for a large-scale anime AI training GPU cluster. Bridge researchers and bare-metal systems using SLURM, filesystems, networking, and Linux sysadmin skills.
Develops 3D first-person anime adventure game in Unity integrating AI companion powered by in-house LLM for dynamic storytelling and puzzles. Requires passion for anime, prior independent 3D Unity game development, and excitement for generative AI.
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.
Researches and develops motion generation models (text-to-motion, audio-to-motion, facial animation) for real-time AI anime companions in narrative-driven 3D games. Requires hands-on AI model training experience and anime passion; on-site in SF or Tokyo.
Designs engaging tactics missions using Unity and in-house tools, including enemies, terrain, and objectives. Collaborates with team, playtests content, and contributes to tooling with C# skills. Requires proven game content creation and shipped game experience.
Builds features for an anime mobile tactics game using Unity and C# as a generalist programmer on a small team. Requires 5+ years experience, shipped Unity games, and interest in applying generative AI research.
Builds scalable data pipelines and infrastructure for AI research, processing petabyte-scale anime data across 10k GPUs. Partners with researchers using distributed systems, big data tools, cloud services, requires 3+ years generalist experience.
Builds and runs end-to-end ML inference infrastructure for generative AI image models across mobile and web platforms. Requires expertise in distributed systems, Kubernetes, Kafka, Redis, GPUs, and multi-cloud environments.
Builds complex, interaction-heavy front-end applications using React and TypeScript for anime/video game tools, focusing on responsive UIs with Canvas/WebGL. Requires anime passion, design sense, and on-site collaboration in small teams.