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LLM San Francisco or Tokyo tl;dr: We're building a 3D first-person adventure game where an AI companion is the core of the game. Think MiSide https://store.steampowered.com/app/2527500/MiSide/ with LLMs, but truly integrated with gameplay, not just a RP chatbot. ABOUT US Here at Spellbrush, we're passionate about making a good anime game. We also happen to be the world's leading generative AI studio-we're the team behind niji・journey https://nijijourney.com/. Our mission is simple: use AI to bring characters to life and push the boundaries of narrative-driven games. What We're Building We've developed an in-house LLM storytelling system that blends AI, story, and gameplay-going far beyond shallow “chat-only” experiences. The result is an AI companion who cooperates with you in puzzles, remembers across worlds, and changes how each chapter unfolds. 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Think MiSide https://store.steampowered.com/app/2527500/MiSide/ with LLMs, but truly integrated with gameplay, not just a RP chatbot. ABOUT US Here at Spellbrush, we're passionate about making a good anime game. We also happen to be the world's leading generative AI studio-we're the team behind niji・journey https://nijijourney.com/. Our mission is simple: use AI to bring characters to life and push the boundaries of narrative-driven games. What We're Building We've developed an in-house LLM storytelling system that blends AI, story, and gameplay-going far beyond shallow “chat-only” experiences. The result is an AI companion who cooperates with you in puzzles, remembers across worlds, and changes how each chapter unfolds. 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Software Engineer at Spellbrush - San Francisco | Tokyo - Software Engineer San Francisco | Tokyo

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Game Programmer (Unity) at Spellbrush - San Francisco - Game Programmer (Unity) San Francisco

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "OTHER", "identifier": { "@type": "PropertyValue", "name": "Spellbrush", "value": "db2d83216f659169bcac4bca8fd33b01" }, "hiringOrganization": { "@type": "Organization", "name": "Spellbrush" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "US" } }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 60 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/spellbrush/game-programmer-unity-db2d8321" } }, { "@type": "ListItem", "position": 3, "url": "https://fewerjobs.com/jobs/spellbrush/ai-infrastructure-engineer-c59486da", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "AI Infrastructure Engineer", "description": "

AI Infrastructure Engineer at Spellbrush - San Francisco - AI Infrastructure Engineer San Francisco

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "OTHER", "identifier": { "@type": "PropertyValue", "name": "Spellbrush", "value": "c59486dac92d6a7796951652945678ef" }, "hiringOrganization": { "@type": "Organization", "name": "Spellbrush" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "US" } }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 36 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/spellbrush/ai-infrastructure-engineer-c59486da" } }, { "@type": "ListItem", "position": 4, "url": "https://fewerjobs.com/jobs/spellbrush/ai-anime-researcher-llm-b4ad2f61", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "AI Anime Researcher - LLM", "description": "

AI Anime Researcher - LLM at Spellbrush - San Francisco or Tokyo - AI Anime Researcher - LLM San Francisco or Tokyo tl;dr: We're building a 3D first-person adventure game where an AI companion is the core of the game. Think MiSide https://store.steampowered.com/app/2527500/MiSide/ with LLMs, but truly integrated with gameplay, not just a RP chatbot. ABOUT US Here at Spellbrush, we're passionate about making a good anime game. We also happen to be the world's leading generative AI studio-we're the team behind niji・journey https://nijijourney.com/. Our mission is simple: use AI to bring characters to life and push the boundaries of narrative-driven games. What We're Building We've developed an in-house LLM storytelling system that blends AI, story, and gameplay-going far beyond shallow “chat-only” experiences. The result is an AI companion who cooperates with you in puzzles, remembers across worlds, and changes how each chapter unfolds. [https://app.ashbyhq.com/api/images/user-content/89c1442c-bd9c-46be-a910-20b49b5d9ffc/bc53bc2c-874c-41d1-9cb6-e53b0e40720e/IMG_3723.png] [https://app.ashbyhq.com/api/images/user-content/89c1442c-bd9c-46be-a910-20b49b5d9ffc/4eb88211-27a0-422d-8294-6660e04ba96c/IMG_3724.png] In-game screenshots (development build) 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 https://warudo.app/ and Cytoid https://cytoid.io/, a Google Deepmind veteran behind Project Astra https://www.youtube.com/watch?v=JcDBFAm9PPI, 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. WHY YOU'LL LOVE WORKING WITH US Impact and Ownership: As an early team member, you'll have the opportunity to

", "datePosted": "2026-06-10T03:52:15.000Z", "employmentType": "OTHER", "identifier": { "@type": "PropertyValue", "name": "Spellbrush", "value": "b4ad2f61e90d2e73cdc7a24e435aa209" }, "hiringOrganization": { "@type": "Organization", "name": "Spellbrush" }, "jobLocation": { "@type": "Place", "address": { "@type": "PostalAddress", "addressCountry": "unknown" } }, "directApply": false, "experienceRequirements": { "@type": "OccupationalExperienceRequirements", "monthsOfExperience": 36 }, "educationRequirements": "no requirements", "url": "https://fewerjobs.com/jobs/spellbrush/ai-anime-researcher-llm-b4ad2f61" } }, { "@type": "ListItem", "position": 5, "url": "https://fewerjobs.com/jobs/spellbrush/role-adba1af7", "item": { "@context": "https://schema.org", "@type": "JobPosting", "title": "バックオフィス マネージャー", "description": "

バックオフィス マネージャー at Spellbrush - Tokyo | OnSite - バックオフィス マネージャー Tokyo | OnSite 私たちSpellbrushは最高のゲームを作るため日々魂を燃やす生成AIスタジオです！niji・journeyを開発し世界をリードするAI開発チームとしても知られています。 現代において、ゲームほど複雑に技術や要素が絡み合っているメディアはないでしょう。私たちは、AIでアーティストたちを支援し傑作ゲームを生み出すお手伝いができるよう、目下研究中です。 オタク大大大歓迎！！！ [https://app.ashbyhq.com/api/images/user-content/89c1442c-bd9c-46be-a910-20b49b5d9ffc/6d686eda-0d80-44f6-b4e7-31a3307c7db5/midori7301_bold_thick_lines_simple_calm_but_delightful_atmosphe_bb5e242e-f4bd-4637-a46f-a332226f379d.png] バックオフィスマネージャーの役割： 私たちが制約や限界を乗り越えAIとアニメやゲームとの垣根を取り払っていけるよう、力強く支えてくれるバックオフィスマネージャーを募集します。 事務・総務・経理などの業務を中心に、アメリカ本社と連携しながらSpellbrush Japanの運営を支え、会社の成長を裏側から全力サポートします。 ゲームやAI関連プロジェクトに絡むチャンスあり！新ジャンルや新規事業に挑戦する会社なので、事業拡大に貢献できるポジションです。業務の幅を広げて新しい挑戦をすることにワクワクする方はぜひご応募ください！ 主な業務内容： 総務・庶務業務 経理・労務のサポート アメリカ本社との連携 会社の成長に合わせて生じる新しい業務への対応 こんな方を求めています： 日本語：ビジネスレベル以上 英語：ビジネスレベル アニメ・ゲーム・二次元文化への理解や親和性がある 少人数チームで幅広く動くことやスピード感のある環境を楽しめる 歓迎する経験・スキル： バックオフィス経験（事務、経理、人事など） 高いコミュニケーション能力 スタートアップやベンチャー企業での勤務経験 [https://app.ashbyhq.com/api/images/user-content/89c1442c-bd9c-46be-a910-20b49b5d9ffc/594979d1-3fd1-4e96-be9d-668425a45013/midori7301_close-up_of_a_desk_bold_thick_lines_a_smartphone_a_s_a9d7f650-9140-498d-883a-8e84dc63a620.png]

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Level Designer at Spellbrush - San Francisco or Tokyo - Level Designer San Francisco or Tokyo

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AI Anime Researcher at Spellbrush - Tokyo | San Francisco - AI Anime Researcher Tokyo | San Francisco

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3D Game Programmer (Unity) at Spellbrush - San Francisco or Tokyo | Hybrid | Remote - 3D Game Programmer (Unity) San Francisco or Tokyo | Hybrid | Remote

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Front-End Engineer (Anime) at Spellbrush - San Francisco | Remote - Front-End Engineer (Anime) San Francisco | Remote

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AI Anime Researcher - Motion Generation Models at Spellbrush - San Francisco or Tokyo - AI Anime Researcher - Motion Generation Models San Francisco or Tokyo tl;dr: We're building a 3D first-person adventure game where an AI companion is the core of the game. Think MiSide https://store.steampowered.com/app/2527500/MiSide/ with LLMs, but truly integrated with gameplay, not just a RP chatbot. ABOUT US Here at Spellbrush, we're passionate about making a good anime game. We also happen to be the world's leading generative AI studio-we're the team behind niji・journey https://nijijourney.com/. Our mission is simple: use AI to bring characters to life and push the boundaries of narrative-driven games. What We're Building We've developed an in-house LLM storytelling system that blends AI, story, and gameplay-going far beyond shallow “chat-only” experiences. The result is an AI companion who cooperates with you in puzzles, remembers across worlds, and changes how each chapter unfolds. [https://app.ashbyhq.com/api/images/user-content/89c1442c-bd9c-46be-a910-20b49b5d9ffc/bc53bc2c-874c-41d1-9cb6-e53b0e40720e/IMG_3723.png] [https://app.ashbyhq.com/api/images/user-content/89c1442c-bd9c-46be-a910-20b49b5d9ffc/4eb88211-27a0-422d-8294-6660e04ba96c/IMG_3724.png] In-game screenshots (development build) 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 https://warudo.app/ and Cytoid https://cytoid.io/, a Google Deepmind veteran behind Project Astra https://www.youtube.com/watch?v=JcDBFAm9PPI, 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. WHY YOU'LL LOVE WORKING WITH US Impact and Ownership: As an early team member, you'll have the opportunity to

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