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Mercari

Peer-to-peer mobile marketplace for secondhand goods

Corporate IT Engineer (CMS Platform / IT Infrastructure)

DevOps EngineeringConfirmed live in the last 24 hours
Full-timeMinato City, Tokyo, JapanNo salary listed

About the Job

Requirements

  • At least 2–3 years of experience building and operating websites using a CMS, headless CMS, or static site generator.
  • Experience managing source code with Git or GitHub and building and operating CI/CD, such as GitHub Actions.
  • Experience operating in cloud environments such as AWS, GCP, Cloudflare, or Vercel.
  • Foundational knowledge of web security, including WAF, access control, and vulnerability response.
  • Experience working with non-engineering stakeholders.
  • Ability to adapt to change and think and act based on underlying needs rather than adhering rigidly to established patterns.
  • Japanese proficiency at CEFR C1 is required.

Responsibilities

  • Build and operate the CMS, repository, CI/CD, and deployment mechanisms for the corporate website.
  • Operate and improve publishing workflows in collaboration with teams such as Creative.
  • Implement and operate web security measures, including tamper detection, access control, WAF, and vulnerability response, in collaboration with the Security team.
  • Establish monitoring and alerts, provide initial incident response, and prevent recurrence.
  • Operate and maintain the hosting environment.
  • Document operational procedures.
  • Contribute to other IT Platform Team areas, including infrastructure-as-code with Terraform and network automation; configuration visibility and AI-enabled monitoring and operations automation; security infrastructure for devices, accounts, and access; and IT infrastructure for new sites and offices.
  • Work across the IT Platform Team to maintain and continuously improve the group's IT infrastructure.

Desired Qualifications

  • Experience operating brand-related websites such as corporate or recruitment websites.
  • Experience managing infrastructure using infrastructure as code, such as Terraform.
  • Experience designing monitoring and alerts or responding to incidents.
  • Experience automating operations with scripts or AI tools.
  • Experience with corporate IT, such as networking, device management, or identity and access management.
  • Experience documenting systems and handing them over to another team.
  • English proficiency at 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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