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mantra

Posted 23 days ago

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人事・バックオフィス/Human Resources

TokyoOn-siteFull-time

AI Summary

Oversees labor relations, general affairs and a broad range of back-office duties. Manages onboarding/offboarding, payroll, contracts, office admin, and process improvements while collaborating across teams.

About this role

Mantra株式会社は、「エンターテインメントから「言語の壁」をなくすこと」に挑戦しているグローバルAIスタートアップです。世界中の誰もが、最新のマンガやアニメ、ゲームを同時に楽しみ、国や文化を超えて語り合う。作品への愛やファン同士の交流から生まれる「異文化への敬意」が、やがて世界の相互理解を育む―。そんな平和で笑顔に満ちた未来を描きながら、私たちはAI技術の研究、マンガ翻訳、そして語学学習サービスの開発に取り組んでいます。

具体的には、マンガ・エンターテイメントに特化したAI技術の研究開発を通じて、高速なマンガ翻訳を実現する翻訳ツール『Mantra Engine』、マンガを用いた英語多読学習アプリ『Langaku』などのサービスを提供しています。また、これらの成果により、HONGO AI Award (2019) 、週刊東洋経済『すごいベンチャー100』(2020)、AAMT長尾賞 (2021)、JEITAベンチャー賞 Early edge賞（2022）、『Google Play ベスト オブ 2025 自己成長部門 大賞(Langaku)』等を受賞しています。

Mantra Inc. is a global AI startup dedicated to “breaking down language barriers through entertainment.” We envision a future where people around the world can enjoy the latest manga, anime, and games together, and engage in conversations that transcend national and cultural boundaries. We believe that the “respect for other cultures” born from a love for these works and interactions among fans will eventually foster mutual understanding across the globe. With this vision of a peaceful, smile-filled future in mind, we are committed to researching AI technology, translating manga, and developing language learning services.

Specifically, through R&D in AI technology specialized for manga and entertainment, we provide services such as “Mantra Engine,” a translation tool that enables high-speed manga translation, and “Langaku,” an English extensive reading app that uses manga. Furthermore, these achievements have earned us numerous awards, including the HONGO AI Award (2019), Weekly Toyo Keizai’s “100 Amazing Ventures” (2020), the AAMT Nagao Award (2021), the JEITA Venture Award Early Edge Prize (2022), and the “Google Play Best of 2025 Grand Prize in the Self-Improvement Category (Langaku).”

募集背景/Recruitment Background

社員数の急激な伸び、組織の急拡大に伴い、事業の成長をバックオフィスから貢献していただける方を募集します。労務中心に、総務、他人事領域と幅広くバックオフィス業務に携わっていただける方を歓迎します。労務総務領域のプロフェッショナルになりたい方や、今の経験領域に留まらず幅広いバックオフィス業務に挑戦したい方も大歓迎です。

Due to rapid growth in our headcount and the rapid expansion of our organization, we are seeking someone who can contribute to our business growth from within the back office. We welcome candidates who can handle a wide range of back-office duties, with a focus on labor relations, as well as general affairs and other related areas. We especially welcome those who aspire to become professionals in labor and general affairs, as well as those who wish to take on a broader range of back-office responsibilities beyond their current areas of expertise.

業務内容/Job description

労務：

  • 勤怠管理や各手続きの運用
  • 入退社手続き、契約管理、オンボーディング対応
  • 給与支払い、保険・税金手続き
  • 定期健康診断、法定労務対応
  • 各種労務フローの改善、自動化
  • その他労務手続きや社員からの問い合わせ対応　など

    • 総務

  • デバイスや備品の発注と管理
  • オフィスファシリティの管理
  • 各種書類の管理　など

    • 上記に加え、ご経験によりお任せしたいこと

  • 中途採用実務、採用戦略・広報
  • 組織開発、サーベイ運用
  • 評価制度運用・改善サポート
  • 組織戦略策定サポート
  • IPOに向けた内部統制管理強化 など

    • Human Resources:

    - Managing attendance records and various HR procedures
    - Handling employee onboarding and offboarding, contract management, and onboarding support
    - Payroll processing, insurance, and tax procedures
    - Coordinating regular health checkups and compliance with labor laws
    - Improving and automating various HR workflows
    - Handling other HR procedures and responding to employee inquiries, etc.

    General Affairs

    - Ordering and managing devices and office supplies
    - Managing office facilities
    - Managing various documents, etc.

    In addition to the above, responsibilities may include the following based on your experience:

    - Mid-career hiring operations, recruitment strategy, and outreach
    - Organizational development and survey administration
    - Support for performance evaluation system operations and improvements
    - Support for organizational strategy development
    - Strengthening internal controls in preparation

    必須スキル・経験/Required Skills and Experience

  • 労務経験3年以上
  • 日本語力：ネイティブレベル
  • 英語力：日常会話~ビジネスレベル (社内公用語が英語のため、日常的な英語使用に抵抗がない方)
  • 組織を横断した主体的なコミュニケーション・協業能力
  • エンタメや漫画・AIへの興味関心
  • At least 3 years of HR experience
  • Japanese language proficiency: Native level
  • English language proficiency: Conversational to business level (As English is the official language within the company, candidates should be comfortable using English on a daily basis)
  • Ability to communicate and collaborate proactively across organizational boundaries
  • Interest in entertainment, manga, and AI

    • 歓迎スキル・経験/Preferred Skills and Experience

  • スタートアップにおけるバックオフィス経験
  • 労務以外の人事領域経験
  • グローバルな環境での就業経験
  • AIを活用した自動化ソリューション経験
  • Back-office experience at a startup
  • Experience in HR areas other than labor relations
  • Experience working in a global environment
  • Experience with AI-powered automation solutions

    • 求める人物像/Ideal Candidate

  • 主体的に動ける方、オーナーシップを持って業務を推進できる方
  • 高い調整力・コミュニケーション力のある方
  • 異なる専門性やバックグラウンドを持つ人とのコミュニケーションを楽しめる方
  • Mantraの事業領域（マンガをはじめとするエンタメ、言語、機械学習）に強い関心がある方
  • **TryFirst:** 何事も挑戦するマインドを持つ方
  • **Learn and Transform:** 何事からも学び続ける姿勢を持つ方
  • **Climb Together:** 価値観やバックグラウンドの異なるひとと前向きに協業できる方
  • Individuals who can take the initiative and drive projects forward with a sense of ownership
  • Individuals with strong coordination and communication skills
  • Individuals who enjoy communicating with people from diverse professional backgrounds and fields of expertise
  • Individuals with a strong interest in Mantra’s business areas (entertainment, including manga; languages; and machine learning)
  • **TryFirst:** Individuals with a mindset that embraces challenges
  • **Learn and Transform:** Individuals committed to continuous learning
  • **Climb Together:** Individuals who can collaborate positively with people of different values and backgrounds

    • Skills

    Attendance ManagementContract ManagementDevice And Office Supply ManagementDocument ManagementHealth Checks CoordinationHiring StrategyHR SystemsInsurance And Tax ProceduresInternal ControlsLabor Law ComplianceOffboardingOffice Facilities ManagementOnboardingOrganizational DevelopmentPayroll ProcessingPerformance Evaluation System OperationsRecruitment OperationsSurvey AdministrationWorkflow Automation

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