Software Engineer, backend (Crossborder) - Mercari

• Employment Status: Full-time
• Work Hours: Full Flextime (no core time)
• 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

Mercari has been operating marketplaces localized in two countries, Japan and the United States, and the Crossborder team recently released a new global app , already in use in Hong-kong and Taiwan that we aim to deploy  in over 100 countries. For requests from each region, it must be developed with a global perspective, including standardization and consolidation to avoid excessive localization.

The integration of Crossborder e-commerce and local business is heavily reliant on a robust logistics network and efficient operations. This necessitates working closely with numerous third-party vendors. Through this experience, you will acquire a wide range of business knowledge and apply it to engineering, collaborating closely with teams such as product and operations.

Trade-offs will have to be made to build a strong foundation while assuring a reasonable time to market. The team must balance short-term initiatives and the long term goal for the Global Product. Constructive discussions that transcend individual job roles, whether you are an engineer or a Business Developer, are essential for moving forward effectively.

See here for more information about our mission and values.

Work Responsibilities

• Collaborate with cross-functional teams including product, engineering, warehouse operators and QA to deliver high-impact features and improvements.
• Design and implement critical features within a high-volume global platform.

• Mentor junior engineers, lead code reviews, and actively contribute to architectural decisions and technical documentation.

• Help to shape the team technical vision and direction by contributing to process and tooling improvements.

Unique Challenges

• Be part of the team which contributes to scale Mercari products worldwide with a focus on international shipment and custom clearance domains.
• Work in a globally distributed division, collaborating with teammates in both Tokyo and India, to deliver impactful solutions across time zones and cultures.

Qualifications

• Required Experience/Skills

• Shared belief in the mission and values of Mercari Group and its various companies

• Have 3+ years of experience working on large-scale backend systems

• Project management or team leadership experience
• Have experience with backend design, development, and operational skills considering the load of large-scale services
• Experience designing, developing and operating APIs in the Go programming language
• Have knowledge and experience in data model design and data query to efficiently utilize databases (RDBMS, NoSQL)
• Have Cloud Computing development experience, especially with GCP or AWS

• Have development experience in a team using Git / GitHub or similar version control systems

• Preferred Experience/Skills

• Experience developing and operating with Microservices architecture or with Monorepo architectures

• Experience in on-call support of services
• Knowledge of security in web applications
• Experience in integrating development with third parties
• Experience in publishing and contributing to OSS

• Experience with AGILE methodology

• Language

• English: Independent (CEFR - B2) required

• Japanese: Basic (CEFR - A2) optional

For details about CEFR, see here.

Learn More About Mercari Group

• Careers site:
• Mercan:
• Social media: X / Linkedin
• Mercari Global App Launch Announcement
• Mercari Global App Engineering Blog Series

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.

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