Developer Jobs in Japan

Software Engineer, iOS Architect

Roppongi, Tokyo
This position is closed and is no longer accepting applications.

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

You will work as an iOS architect to improve Mercari’s architecture and promote Mercari’s business.

Mercari’s mobile team is currently working on a major re-architecture of the iOS/Android apps in order to create a structure where they can conduct further large-scale development while maintaining speed and security. The team is also working on various other projects, such as developing new features and improving the UX.


  • Continuous improvement of the codebase, including the major re-architecture
  • Improving quality with a focus on stability and performance
  • Handling OS update


  • Experience developing native iOS apps
  • Experience not only in technical decision making, but also in taking ownership of the outcome and operation
  • Experience in making technical decisions in small to large organizations
  • Experience of re-architecture in medium to large organizations
  • Knowledge of UI frameworks, MVVM / MVP architecture, and complex
  • Understanding of data structures, algorithms, software design, performance optimization, and concurrency
  • Knowledge of open-source commonly used in the iOS development
  • Ability to develop features while conducting unit tests
  • Software development experience with Swift at work

Application instructions

This position is closed and is no longer accepting applications.

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

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