Developer Jobs in Japan

Software Engineer, Productivity

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

Our team mission is to improve software engineering productivity across the company. Currently Mercari’s Japan based productivity team is building and designing a world class experimentation and feature flagging platform. We are looking for skilled developers to help build and maintain our new experimentation platform. If you are passionate about enabling data driven decisions and advocating for best practices to improve developer workflows, please contact us!

Job Responsibilities

  • Implement and maintain an experimentation platform
  • Work with other software engineers and product owners to integrate experimentation and feature flagging into their teams
  • Propose and review architecture designs, code, and tests
  • Plan computing resources required for production deployment and client request volume
  • Promote increased software development productivity strategies and lean product development


  • 5+ years experience in software engineering
  • Interested in the Go programming language
  • Deploying and managing services in Kubernetes
  • Docker containers
  • Build continuous deployment pipelines and infrastructure
  • Build tools such as Bazel, Google Cloud Build, CircleCI, Makefiles, and Shell scripts
  • Git version control
  • SQL databases
  • System architectures designs and proposals

Application instructions

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

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