About Us
Passion for AI × Gaming
AnimaSphere Inc. is a Tokyo-based AI startup building middleware that powers AI-native game development. Our vision: "AI for New Play, Guided by Creators." We are transforming games from pre-scripted content into generative, continuously evolving experiences.
Global & Lean Team
Our team combines deep expertise in both the game industry and AI. We work across Japanese, English, and Chinese in a multilingual environment where cross-border collaboration is the norm.
The Thrill of Being an Early Member
Officially launched in March 2026, we are in our earliest stage. Joining now means direct involvement in technology decisions, product design, and business strategy.
Growth Environment
Learn cutting-edge AI technologies (LLMs, generative AI) applied to real-world game development. Our lean team structure means broader exposure, faster growth, and more ownership.
Open Positions
Software Engineer Intern
1–2 openingsOverview
Join the development of AnimaSphere's middleware and demo game. Contribute across the stack — from backend (LLM integration, rule engine, API design) to frontend (game UI, dashboards, dialogue interfaces) — based on your strengths.
Responsibilities
- Develop and optimize NPC dialogue and story generation pipelines using LLM APIs
- Prototype the rule engine
- Design and implement REST API endpoints with FastAPI
- Build middleware and game UI
Requirements
- Development experience in Python or JavaScript/TypeScript
- Familiarity with Git / GitHub workflows
- Strong interest in LLM / AI technologies and eagerness to learn
- English: Ability to read technical documentation
Nice to Have
- Experience with OpenAI API or Claude API; knowledge of prompt engineering
- Game development experience with Unity / Unreal Engine
- Passion for game development
- Japanese language ability
What You'll Gain
- End-to-end experience integrating LLMs into a real product
- Opportunity to participate in architecture design and technical decisions at an early-stage startup
- Frontier experience in the emerging field of Game AI × Middleware
- Potential for full-time conversion with stock options for outstanding performers
Business Intern
1 openingOverview
Work alongside the founding team to develop the Japanese game developer market. Responsibilities span market research, lead generation, business development support, and brand content creation.
Responsibilities
- Research game developer markets, potential clients, and ecosystem partners; compile target lists and market insights
- Monitor industry trends and overseas competitor activities; provide business analysis and research support
- Support outreach, follow-up, and lead management for potential clients/partners
- Create and update company introduction materials, proposals, and external communications
- Participate in industry events and developer community engagement; build partnership opportunities
- Support general operations and administrative tasks
Requirements
- Japanese: Business level or above (documents, emails, basic business conversations)
- Strong interest in the gaming industry or AI/tech industry
- Solid information gathering, organization, and analysis skills
- Ability to drive work forward independently with incomplete information
- Strong written communication and structured output skills
- Alignment with startup pace; interest in building from 0→1
Nice to Have
- English ability (for overseas competitor research and English document reading)
- Basic understanding of game production processes
- Experience in content operations, community management, or event management
- Proficiency with Notion, Google Sheets, Google Slides, and other collaboration tools
- Basic design, video editing, or visual layout skills
What You'll Gain
- Direct collaboration with the founding team on early market validation and commercialization
- Build a high-quality network with Japanese game industry developers, studios, and ecosystem players
- End-to-end hands-on experience from market research to BD, events, and brand building
- Potential for full-time conversion and stock option opportunities for outstanding performers
How to Apply
We are looking for people who can "think proactively and propose solutions." We value willingness to learn and initiative over perfect skills. Let's pioneer the new frontier of AI × Gaming together.