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Mercari

Peer-to-peer mobile marketplace for secondhand goods

Legal Counsel (AI Governance)

Legal Counsel & Legal SupportConfirmed live in the last 24 hours
Full-timeMinato City, Tokyo, JapanNo salary listedHybrid

About the Job

Requirements

  • Have experience using generative AI, large language models, and AI agents to improve work processes.
  • Have at least three years of corporate legal experience or equivalent practical experience.
  • Be able to translate complex legal regulations, technology, and risks into practical rules, processes, and decision criteria.
  • Be able to research and interpret domestic and international regulations and present legal risks and feasible responses for specific matters.
  • Have proficient Japanese language ability at CEFR C1 level.

Responsibilities

  • Research AI laws, regulations, and guidelines in Japan and internationally, especially in Japan, the European Union, and the United States.
  • Review the legality of business-unit AI use cases, particularly cross-border projects, assess legal risks, and support the development and implementation of responses.
  • Develop and execute company-wide AI governance strategy and roadmaps.
  • Create, revise, and operate internal rules such as AI use policies and generative AI guidelines, including drafting with regard to domestic and international regulations.
  • Operate a one-stop consultation service for AI use.
  • Design and conduct company-wide risk reviews of AI use cases and support the design and implementation of risk-reduction measures.
  • Establish and operate processes to prevent, detect, and respond to AI-related incidents.
  • Plan and deliver AI education and awareness activities for all employees.
  • Automate and enhance AI governance work, including developing and operating AI agents for consultations and guideline revisions.
  • Provide regular reports to committees such as the Information Security Committee and the Board of Directors, and to executive leadership.
  • Improve AI governance maturity through assessments based on external standards.
  • Research AI-related technology trends and other companies’ practices, and apply findings to internal initiatives.
  • Communicate externally about AI governance through events, speaking engagements, industry group activities, interviews, and articles.

Desired Qualifications

  • Have practical experience in AI governance, including developing policies and guidelines, building and operating governance frameworks, risk assessments, or incident response.
  • Have knowledge of or practical experience with AI-related laws, regulations, and guidelines, including the EU AI Act and AI Business Operator Guidelines.
  • Have legal experience with international business or cross-border matters, including researching local laws and engaging and managing external counsel.
  • Have knowledge of or experience with AI agent development and operations, product development, or machine learning.
  • Have knowledge of or experience in IT, platform, e-commerce, or fintech businesses.
  • Hold a lawyer qualification in Japan, the United States, or the United Kingdom.
  • Have independent English language ability at CEFR B2 level.

About the Company

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Mercari

Peer-to-peer mobile marketplace for secondhand goods

Mercari operates a mobile peer-to-peer marketplace for buying and selling secondhand goods. Users list items by taking photos in the app, and buyers complete purchases there, with payments held in escrow until receipt is confirmed. Revenue comes from seller fees (10% in Japan; 10% plus 3.6% buyer protection in the US), plus Merpay payments and promoted listings, plus shipping partnerships for integrated delivery. The platform differentiates itself through a simple mobile experience, escrow and buyer protection, shipping integration, and a broader marketplace including Mercari Shops for sellers, with a goal of extending product life and supporting a circular economy.

Company size
1,001-5,000
Company stage
IPO
Headquarters
Tokyo, Japan
Founded
2013

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