Software Engineer, Android

About Mercari

We believe the world needs a place where people can exchange their loved goods. That’s why we built Mercari—to connect people who want to buy and sell things of emotional value through their mobile phones. Mercari has grown to become a leading community-powered marketplace that brings together millions of people every day.

Mercari Dev Meetups

Position

At Mercari, engineering teams always strive to continuously produce significant results. To do this, 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 want to continue taking on new challenges, working together as one team, going bold, and taking ownership so that we can grow individually, while working toward the realization of Mercari’s mission.

As a Mobile team member, 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 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.

Responsibilities

• Improve Mercari’s UI/UX
• Improve 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

Your qualification

• Experience developing native Android apps
• Superb knowledge in object-oriented software development, solid MVVM/MVP architecture, multithreading, networking and memory management 
• 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 Mockito and JUnit 
• Software development experience with Kotlin at work

Will be a plus

• Ability to gather the team’s consensus and make decisions when selecting technology for large-scale development
• Experience managing a team of 3 or more members
• Experience communicating with the business side to decide technical approaches to implement ideas
• Experience background in any of the following is a plus: Product Design, UI/UX design, Back End / Full Stack engineering
• Experience developing and operating native apps with large user bases
• Experience independently planning, developing, and operating apps
• Knowledge of performance optimization
• Experience training junior members
• Ability to communicate with development teams in English (written and verbal communication skills)

Languages and technologies we use

• Software development: Java and Kotlin
• Network transport: Protocol buffers
• Build Environment: Gradle + OkBuck
• Day to day development: LeakCanary, Dagger, and okhttp
• UI Testing: Espresso
   

Interview Process

• Resume Screening
• Take-home skill test on GitHub (deadline: one week)
• Technical Interviews
• Interviews (2-3 rounds)
• Offer

What we offer

• Health insurance
• Incentive program
• Employee stock ownership plan
• Full transportation coverage
• Visa support
• Custom PC
• Dual screen if needed
• Company smartphone
• New Employee Benefits at Mercari「mercibox」