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Mercari

Peer-to-peer mobile marketplace for secondhand goods

Enterprise Network Engineer

Network Engineering & AdministrationConfirmed live in the last 24 hours
Full-timeMinato City, Tokyo, JapanNo salary listed

About the Job

Requirements

  • Basic knowledge of shell scripting, Go, and Python.
  • Network knowledge equivalent to CCNP Enterprise.
  • At least 3 years of network design, construction, and operations experience, including on-call duties.
  • At least 3 years of experience using a public cloud platform: Azure, AWS, or GCP.
  • Experience troubleshooting and resolving technical system problems.
  • Proficient Japanese language ability (CEFR C1) is required.

Responsibilities

  • Lead the design, implementation, operation, management, and continuous improvement of office and warehouse site networks, as well as networks subject to stringent security requirements such as PCI DSS.
  • Operate, manage, and continuously improve network services such as DHCP, DNS, and RADIUS.
  • Operate, manage, and continuously improve network management systems for monitoring and traffic-flow analysis.
  • Manage network configurations using GitHub and promote operations automation through GitOps initiated by GitHub Actions.
  • Research developments in AI technologies, including general-purpose large language models such as OpenAI, Claude, and Gemini and network-specific AI, and promote their application to operations.

Desired Qualifications

  • Experience handling traffic of 10 Gbps or more.
  • Experience designing, implementing, and operating specialized networks for venues such as stadiums, stations, halls, hotels, or warehouses.
  • Experience developing operational tools or business web applications for managing Cisco IOS or Juniper Networks Junos OS.
  • Basic knowledge of authentication, authorization, and directory services.
  • Experience contributing to or maintaining open-source code.
  • Independent English language ability (CEFR B2) is welcomed.

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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