Software Engineer, React Native - US App

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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.