Spellbrush

You will design, implement, and run next-generation inference architecture for AI models powering mobile, web, and other platforms. You'll work with a fast-paced team developing state-of-the-art image generation models serving over 16 million users, enabling creative expression through anime aesthetics.

You'll lead **bringup, administration, and operations** of a large GPU cluster for **anime AI model training**. Act as the bridge between researchers and bare-metal machines, ensuring SLURM jobs, parallel filesystems, and networking run smoothly. This is a unique role combining **anime passion with cutting-edge HPC**. You'll work on a small, fast-paced team in Tokyo or San Francisco.

You'll define the processes and infrastructure to **transform and make data readily available** across the company, whether it be embeddings, video, bounding boxes, or more. You'll partner with our world class AI researchers to understand their needs, and then design, build and monitor **pipelines that scale gracefully** with growing data size. You'll work at the intersection of AI and gaming in a fast-paced environment.

You'll design and develop large-scale **diffusion models** with a primary focus on images, working on **state-of-the-art anime models** in one of the few labs combining anime and deep learning. Your work will go from research to production quickly, powering tools like **niji・journey**.

You'll join a small team to define a new kind of video game experience, building an AI companion that cooperates in puzzles and changes story chapters. You'll work alongside top otaku minds and AI researchers to push boundaries of **LLM-driven storytelling**. This role offers significant artistic and research freedom.

You'll lead **back office operations** for Spellbrush Japan, supporting **administrative, accounting, and HR functions**. You'll collaborate with the US headquarters to ensure smooth company growth. This role offers opportunities to work on **AI and gaming projects**.

You'll use **in-house Unity tools** to create **fun tactics missions**, designing enemies, terrain, and objectives. You'll playtest and iterate, collaborating with designers, artists, and engineers. This role offers **high ownership in a fast-paced startup** environment.

You'll join a small team building a **3D adventure game** where an **AI companion** is core to gameplay, moving beyond shallow chat-only experiences. You'll have significant artistic and research freedom to shape **next-generation LLM-driven storytelling**. Collaborate with top AI researchers and engineers on a fast-paced team.

You'll join a small team building a **3D first-person adventure game** with an **AI companion at its core**. Your work will blend generative AI with gameplay to create a narrative experience that adapts to player choices. This role offers **significant creative freedom** in shaping a new kind of storytelling.

You'll design and develop **complex single-page editors** for anime and video game tools using React and TypeScript. You'll integrate **state-of-the-art AI models** into beautiful, responsive user interfaces. This role offers **visa sponsorship** and the chance to work on-site in Tokyo or San Francisco with top AI researchers.

You'll be working closely with a small, multidisciplinary team to build out our upcoming **anime mobile tactics game**. As a generalist game engineer, you can work on lots of different areas and take features from idea to polished implementation. You'll also collaborate with AI researchers to apply cutting-edge **machine learning** results into the game.