Developer Jobs in Japan

Software Engineer, iOS

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 mobile engineer, you will work as an iOS professional to promote Mercari’s business and maximize project output.

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.

Mobile engineers at Mercari come from many different countries; we hope to unlock the potential of this diverse team in order to make even greater achievements.


  • Improving Mercari’s UI/UX
  • Improving quality with a focus on stability and performance
  • Continuous improvement of the codebase, including the major re-architecture
  • Handling updates for the iOS app
  • Developing new services and linking them with other services


  • Experience developing native iOS apps
  • Extensive knowledge in object-oriented software development, MVVM / MVP architecture, multithreading, networking and memory management.
  • Experience with continuous improvement of codebases and large-scale team development
  • Knowledge of UIKit, standard iOS libraries, and frameworks
  • Understanding of UI development
  • Experience with/understanding of reactive programming
  • Software development experience with Swift at work

Application instructions

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

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