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Mercari

Peer-to-peer mobile marketplace for secondhand goods

Anti-Fraud Specialist

Financial Crime & AMLConfirmed live in the last 24 hours
Full-timeMinato City, Tokyo, JapanNo salary listed

About the Job

Requirements

  • Demonstrate alignment with Mercari Group’s mission and values.
  • Have experience in fraud prevention for services, particularly in tuning fraud-detection rules, developing and operating fraud-detection systems, or planning and managing fraud prevention.
  • Be able to propose improvements proactively and take action.
  • Be comfortable with and enjoy change while continually improving and growing.
  • Have Japanese proficiency at CEFR C1 level.

Responsibilities

  • Detect signs of fraud and capture and analyze fraud that has already occurred across group services.
  • Develop and tune monitoring rules according to fraud risk.
  • Develop and operate fraud-detection systems.
  • Plan and promote fraud countermeasures for Mercari products.

Desired Qualifications

  • Have domain knowledge in fraud prevention or Trust & Safety.
  • Have experience analyzing data using query languages such as SQL or BigQuery; the role uses BigQuery.
  • Have experience in software development as an engineer.
  • Have experience building fraud-prevention products or systems as a Product Manager.
  • Have work experience using English.
  • Have leadership and communication skills to engage and involve colleagues.
  • Have basic English proficiency at CEFR A2 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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