M

Mercari

Peer-to-peer mobile marketplace for secondhand goods

Senior Software Engineer - Autonomous Cloud Network

Platform Engineering +1Confirmed live in the last 24 hours
Full-timeMinato City, Tokyo, JapanNo salary listed

About the Job

Requirements

  • Strong networking fundamentals, including TCP/IP, IP address management, OSI layers 4–7, cloud routing, content delivery networks, Domain Name System, Transport Layer Security, and Hypertext Transfer Protocol.
  • Production experience building and operating cloud networks using Google Cloud Platform or Amazon Web Services.
  • Production experience building and operating Linux and Kubernetes networking.
  • Knowledge of network proxies such as Envoy, HAProxy, and Nginx, and of regional and virtual private cloud routing.
  • Production experience operating content delivery networks, including edge and cache configuration, multi-CDN setups, performance, and security.
  • Production experience operating a service mesh such as Istio, including traffic management and reliability practices.
  • Ability to automate network-related workflows using a familiar programming language such as Go, Python, or Bash, and deliver capabilities as a service.
  • Experience managing network configuration using Infrastructure as Code.
  • Experience writing design documents, collaborating with stakeholders, and making technical decisions.
  • A track record of developing tools for internal users and improving platform operations.
  • On-call and production troubleshooting experience for reliability-critical systems, including incident response, debugging, and root cause analysis.
  • Empathy with Mercari's mission and values.
  • Proficiency in English at CEFR C1 level.

Responsibilities

  • Design, develop, and evolve the cloud networking and infrastructure that supports the entire business.
  • Design and implement networking and infrastructure solutions that support the global and multi-region strategy.
  • Improve systems to reduce operational engineering cost.
  • Support the migration and adoption of new platform features and tools.
  • Improve and drive security and reliability in collaboration with the SRE and Security teams.
  • Automate day-to-day platform operations to improve efficiency and reduce toil.
  • Collaborate with internal developers to understand their needs and deliver solutions.

Desired Qualifications

  • Japanese language ability is preferred but not required.
  • Experience building and operating networks in large-scale distributed systems composed of hundreds of microservices.
  • Production experience operating service meshes such as Istio or Linkerd.
  • Experience architecting scalable, highly available infrastructure or middleware, such as control planes, Kubernetes operators or CRDs, or service-as-a-platform APIs.
  • Experience with agent-driven workflows and agentic tools such as Claude, Cursor, and Codex.
  • Experience developing and maintaining CI/CD pipelines such as GitHub Actions and Argo CD.

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

Recently Posted Jobs

Explore more opportunities at Mercari

See more jobs