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Position: Software Engineer, ReactNative - US App

Employment Status:　Full-time
Work Hours: Full Flextime (no core time) / Eight hours + one-hour break per day
Office: Roppongi

For more details, see the Overview of Our Positions section on our Careers site.

About Mercari

Circulate all forms of value to unleash the potential in all people

"What can I do to help society thrive with the finite resources we have?" The Mercari marketplace app was born in 2013 out of this thought by our founder Shintaro Yamada as he traveled the world. We believe that by circulating all forms of value, not just physical things and money, we can create opportunities for anyone to realize their dreams and contribute to society and the people around them. Mercari aims to use technology to connect people all over the world and create a world where anyone can unleash their potential. For more information about Mercari Group’s mission, see Mercari’s Culture Doc

Organization/Team Mission

Mercari Engineering Principles

Mercari Engineering Principles are a shared understanding that serves as the foundation of engineering beliefs and behavior at Mercari. The Engineering Principles are designed to complement the organizational identity (Mercari’s mission, values, and culture) from an engineering viewpoint.

These principles ultimately help us achieve Mercari’s mission by defining the ideal state we seek to realize in the long term.

Passion For The Product
Grow Together
Solve Through Mechanisms
Collaborate Openly

For more details, please see the following link:

Engineering Culture

See here for more information about our mission and values.

Our tech stack:

React Native
Typescript
Redux / Redux Toolkit
React Navigation
MMKV
Detox / Jest / React Native Testing Library

Work Responsibilities

Specific work responsibilities include the following:

Build user-facing features for our mobile app using technologies like React Native, TypeScript, and Redux
Diagnose and fix bugs and performance bottlenecks to achieve native-level performance
Design and maintain CI pipelines to build, test, and deliver our apps
Maintain code and write automation testing to ensure the product is of the highest quality
Work collaboratively with cross-functional teams to solve key business problems
Introduce, socialize, and promote mobile development best practices among the team

Unique Challenges

Deliver product features in a fast-paced start-up style environment
Seek to gain a deep understanding of the US market to ensure Mercari’s continued global success
Work effectively in a multicultural environment with colleagues from various backgrounds

Qualifications

Required Experience/Skills

5+ years of software engineering experience
Ability to write clean, testable, and fully typed TypeScript code
Ability to write and maintain technical documentation
Knowledge of REST APIs
Experience setting up and maintaining CI pipelines
Experience monitoring and managing apps in production

Preferred Experience/Skills

Work experience developing and shipping user-facing features on mobile applications using React Native, Kotlin, or Swift
You are up-to-date with React Native best practices
Work experience as a mobile app engineer in consumer, e-commerce, or marketplace space
Familiarity with native Android and iOS APIs
Familiarity with Sentry or Crashlytics
Familiarity with Github Actions

Language

English: Proficient (CEFR - C1)

For details about CEFR, see here.

Learn More About Mercari Group

Careers site: https://careers.mercari.com/en/
Mercan: https://mercan.mercari.com/en/
Social media: X / Linkedin
Our React Native Evolution
Building Mercari's Design System

Recruiting at Mercari

At Mercari Group, we value empathizing with and embodying the mission and values of the Group and each company. To promote the creation of an organization that maximizes the total amount of value exhibited by all members, we would like to understand the experience and skills of each candidate as accurately as possible.

Recruiting cycle at Mercari Group

Application screening
Skill assessment: For engineering positions, you will be asked to complete a skill assessment on HackerRank or GitHub. For non-engineering positions, you may be asked to complete an assessment depending on the position. (The timing of the assessment may coincide with the interview process.)
Interview: The number of interviews may vary depending on the position.
Reference check: We will ask for online references around the timing of the final interview.
Offer: Offers will be determined carefully in consideration of the final interview and the reference check.

　Learn more about our recruiting process here.

Equal Opportunity Hiring

Here at Mercari, we work to realize a world in which no one’s potential is limited by their background and everyone has the opportunity to freely create value. We also firmly believe that a mindset of Inclusion & Diversity is essential for us to achieve our mission.

This, of course, extends to our hiring practices as well. Mercari is committed to eliminating discrimination based on age, gender, sexual orientation, race, religion, physical disability, and other such factors so that anyone who shares our mission and values can join us, regardless of their background. For more details, please read our I&D statement.

Please read and acknowledge our Privacy Policy prior to submitting your application.

Software Engineer, React Native - US App