Developer Jobs in Japan

Software Engineer, Site Reliability

Roppongi, Tokyo

About Mercari

Mercari is a marketplace app that makes it easy for people to safely sell and ship their things. Launched in 2013, the Mercari app has been downloaded over 100M times, and is now among the largest peer-to-peer selling platforms globally.

Our mission

The world is full of objects and services being produced and sold, but many of them are thrown away without people realizing that they might be valuable to someone else, wasting valuable natural resources. To contribute towards eliminating waste, we have launched Mercari, a marketplace where people can buy and sell easily and safely.

The goal of the engineering organization

At Mercari, our organization constantly welcomes changes and new challenges, cooperates and co-creates, is diverse, offers freedom, and encourages all of us to take ownership and make our own decisions.

We are open to overseas candidates looking to relocate to Japan, and will support you in obtaining your visa.

About the position

As a Site Reliability Engineer (SRE), you will be responsible for building the servers/networks for Mercari’s marketplace app. Additionally, you will be responsible for system automation and incident handling, as well as working on development to improve performance, reliability, and scalability.


  • Diagnose and solve technical issues
  • Build and maintain automation tools for deployment, server provisioning, and other various operations
  • Build and maintain monitoring environments to be used in incident detection and capacity planning
  • Build and maintain various applications and middlewares, and work to improve their performance
  • Build the infrastructure for microservices


  • Basic understanding of TCP/IP, HTTP, and other network protocols
  • Ability to trace and solve technical issues (performance drops, etc.)
  • Programming ability sufficient to build any applications or middlewares necessary to fix bugs or improve system performance and reliability

Application instructions

Apply Now Please mention "Tokyo Dev" in the referral section.

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