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Mercari

Peer-to-peer mobile marketplace for secondhand goods

Engineering Manager, Database Reliability Engineering

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

About the Job

Requirements

  • Candidates should resonate with the mission and values of Mercari Group and its companies.
  • Experience managing or leading an engineering team, preferably in SRE, DBRE, or infrastructure, including hiring, performance management, and career development.
  • Strong technical background in database technologies such as MySQL, TiDB, or PostgreSQL, with understanding of database internal architecture, performance tuning, and high-availability designs.
  • Experience with cloud platforms such as GCP or AWS and infrastructure-as-code practices using Terraform or Ansible.
  • Proven track record managing incidents and driving post-mortem and root-cause-analysis processes.
  • Ability to collaborate effectively with stakeholders and explain complex technical risks to non-technical leadership.
  • Japanese language proficiency at Independent (CEFR B2) level is required.
  • English language proficiency at Independent (CEFR B1) level is required.

Responsibilities

  • Manage, mentor, and hire a diverse team of Database Reliability Engineers, fostering psychological safety, continuous learning, and operational excellence.
  • Define and drive the technical vision and roadmap for Mercari's database infrastructure.
  • Oversee the stability of mission-critical database systems, lead responses to high-severity database incidents, and lead post-incident reviews to prevent recurrence.
  • Partner with FinOps to drive ongoing cost optimization, including shard consolidation and resource right-sizing, while balancing performance and efficiency.
  • Collaborate with Platform Infrastructure, SRE, Observability, and Product teams to align database capabilities with business requirements and critical user journeys.
  • Lead completion of the migration from the legacy on-premise data center to TiDB Cloud and establish the future cloud-native operating model.
  • Lead initiatives such as archiving strategies and architecture changes to optimize costs without compromising Core system reliability.

Desired Qualifications

  • Experience operating large-scale distributed databases such as TiDB, Spanner, or Vitess in production.
  • Experience with FinOps or cloud cost-management strategies.
  • Software development background using Go or Python to understand developer experience and tooling needs.
  • Experience leading major infrastructure migrations, such as on-premises to cloud or database engine changes.
  • Knowledge or experience with modern SRE practices, including SLO/SLI definition and error-budget management.

About the Company

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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