This position is closed and is no longer accepting applications.

Software Engineer, Backend


Minato-ku, Tokyo
    💴 No salary range given
    🏡 Fully remote
    🧪 Minimum years of experience unspecified
    💬 No Japanese required
    🌏 Apply from abroad
    🧳 Relocate to Japan

About Mercari

Mercari Minato-ku, Tokyo

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

Key benefits

  • Full flextime
  • Outside work encouraged
  • Employee stock ownership program

About the position

Although the Mercari API was designed and implemented as a monolithic API, we are working on migrating the API to microservices. This will allow us to divide responsibilities and make technological investments for a stronger system and organization capable of handling even greater expansion. Of course, we will continue to run our services as we implement these changes, and we aim to make daily improvements to provide an even better experience for our customers.

We are seeking backend engineers who can work proactively and independently during the team’s current stage, taking ownership over various discussions, developing features, providing spec feedback, and making technical decisions.


  • Design, development, and operation of Mercari’s API and web app using Go and PHP
  • Design, development, and operation of tools to support the customer support team and planning-related work
  • Design, development, and operation of various microservices making up the Mercari API
  • Lead the team’s development


  • A minimum of 5 years backend software development, or equivalent, experience
  • Experience with design, development, and operation of backend APIs using Go
  • Knowledge of and experience with software test including unit testing, functional testing, e2e testing
  • Knowledge of and experience with optimization of queries and data model design for the efficient usage of RDBMS and NoSQL databases.
  • Cloud development experience (preferably GCP, or AWS)
  • Experience with team development using Git/Github or similar version management systems
  • Ability to design, develop and operate large-scale services in heavy traffic scenarios
  • Experience with project management and/or team leadership

Meet Mercari's Developers

Jieqiong shares her experience of joining Mercari and working as a tech lead. She explains their engineering culture and provides tips for potential applicants.

Read her story...

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