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Senior Software Engineer, Android

🏢 Mercari 🇯🇵 Minato-ku, Japan 🕑 January 08

This job offer is expired


Our Mission

Mercari is in the process of strengthening our engineering organization as part of our efforts to become a world-class tech company.

In order to achieve our goal of creating an outstanding team of 1,000 engineers over the next 3 years, we are placing a heavy emphasis on hiring and training new members while also creating an environment that allows engineers to work to the best of their ability. To make this possible, we need highly skilled engineering managers to work with us.

With a strong team of engineering managers and engineers, we aim to become a tech company that can solve society’s problems using technology and work towards Mercari’s mission of creating value in a global marketplace where anyone can buy & sell.

Our Values (Go Bold, All for One, Be Professional)

The path to creating a leading global marketplace is not without challenges. In order to create new and innovative solutions, all members must take advantage of their unique skill sets and have a sense of responsibility and ownership for their work. We are looking for new members to join us in achieving this goal under our values: Go Bold, All for One, and Be Professional.

Job Description

As a member of the Mobile team, you will work as an Android professional to promote Mercari’s business and maximize project output.

Mercari has been downloaded about 75 million times in Japan and has about 10.75 million monthly users. Mercari’s mobile team is currently working on a major re-architecture of the Android/iOS 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.

The mobile team consists of members 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 Android app

Developing new services and linking them with other services


Minimum Requirements

Experience developing native Android apps

Experience with continuous improvement of codebases and large-scale team development

Knowledge of standard Android libraries and frameworks

Ability to develop features while conducting unit tests using JUnit and Mockito

Basic knowledge of Kotlin


Ability to gather the team’s consensus and make decisions when selecting technology for large-scale development

Experience communicating with the business side to decide technical approaches to implement ideas

Experience managing a team of 3 or more members

Experience developing and operating native apps with large user bases

Experience independently planning, developing, and operating apps

Experience with UI/UX design

Knowledge of performance optimization

Experience training junior members

Ability to communicate with development teams in English

Our Ideal Candidate

Capable of taking on bold challenges and learning from mistakes

Capable of working independently and taking initiative to lead the team to success

Possesses a strong sense of responsibility and works hard to achieve their goals

Capable of communicating proactively and producing output in a highly global team


Contract Type


Probationary Period: 3 months (salary same as above)



Work Hours

Fixed working hours 10:00-19:00

Flex time (core hours 12:00-16:00, 60 minute lunch)


Annual salary, paid monthly

Based on your experience, skills and potential

Reviewed twice a year


5-day work week (Sat/Sun off)

National holidays, paid time off, summer/New Year's vacation, congratulatory leave, compassionate leave


notifications in your

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