A global marketplace platform company that enables circulation of value through their marketplace app.

Mercari is seeking a Frontend Software Engineer to join their Crossborder team, working on their global e-commerce platform that connects sellers and buyers worldwide. The role involves building and maintaining a marketplace platform that serves millions of users across 100+ countries. You'll be part of a team that values open culture, technical excellence, and collaborative development. The position offers flexible working hours and is based in Roppongi, Tokyo with a hybrid work arrangement. You'll be responsible for technical design, implementation, and testing of frontend solutions while working closely with cross-functional teams. The ideal candidate should have strong expertise in modern frontend technologies, particularly TypeScript and React, with a focus on building scalable, user-friendly interfaces. This is an opportunity to work on a product that facilitates value circulation globally while contributing to Mercari's mission of unleashing the potential in all people.

Frontend Software Engineer position at Mercari, developing cross-border e-commerce platform with TypeScript and React, hybrid work in Tokyo.

Software Engineer, Frontend - Mercari / Crossborder

Mercari is seeking a Frontend Software Engineer for their Crossborder team to help build a Global Crossborder e-commerce platform expanding to over 100 countries worldwide. The role involves working on a marketplace platform that enables value circulation through their app, which was founded in 2013. As a frontend engineer at Mercari XB, you'll participate in development from ideation to release, owning technical design, implementation, testing, and safe rollout of the product. The company promotes an open culture where engineers can discuss architecture on Slack, collaborate via GitHub, and share knowledge through various channels. They believe in using the most appropriate technology and don't limit engineers to particular roles. The position offers opportunities to work on large-scale products used by millions of users globally, with exposure to modern technologies and practices including A/B testing, monorepo architectures, and agile methodologies. The ideal candidate will combine technical expertise with strong communication skills to work effectively in a diverse, international environment. The role offers flexible working hours and opportunities for professional growth in a company committed to creating value through technology.

Frontend Software Engineer position at Mercari, developing cross-border e-commerce platform with React, TypeScript, and Next.js, requiring 3+ years of experience.

A marketplace app company founded in 2013 that aims to circulate all forms of value to unleash potential in all people.

Mercari, founded in 2013, is seeking a Senior Software Engineer specializing in React Native for their US App team. The role is based in Tokyo, Japan, with a hybrid work arrangement. The company operates a marketplace app with a mission to circulate all forms of value and unleash potential in all people.

The position requires expertise in mobile development using React Native, TypeScript, and Redux, with a focus on building user-facing features and maintaining high-performance standards. The tech stack includes React Navigation, MMKV, and comprehensive testing tools. The role demands strong engineering principles including Passion For The Product, Grow Together, Solve Through Mechanisms, and Collaborate Openly.

Key responsibilities include developing features, optimizing performance, maintaining CI pipelines, and promoting best practices in mobile development. The ideal candidate will have 5+ years of software engineering experience, strong TypeScript skills, and experience with REST APIs and CI/CD processes. Knowledge of native Android and iOS APIs is preferred.

Working in a multicultural environment, you'll contribute to Mercari's global success, particularly in the US market. The company offers a flexible work schedule with no core hours and emphasizes inclusion and diversity. This is an opportunity to join a fast-paced, startup-style environment while working on a significant e-commerce platform that connects people worldwide.

Senior Software Engineer position at Mercari, focusing on React Native development for the US App, requiring 5+ years of experience and expertise in TypeScript and mobile development.

Software Engineer, React Native - US App

A marketplace app company founded in 2013 that aims to circulate all forms of value and connect people worldwide.

Mercari, founded in 2013, is seeking a Senior Software Engineer for their ReactNative US App team. The company operates a marketplace app with a mission to circulate all forms of value and connect people worldwide. As a ReactNative Engineer, you'll be responsible for building user-facing features, optimizing performance, and maintaining high code quality. The role offers unique challenges in a fast-paced, multicultural environment, focusing on the US market expansion.

The position requires expertise in TypeScript, React Native, and mobile app development, with a strong emphasis on writing clean, testable code and maintaining CI pipelines. You'll work in a flexible environment with full flextime scheduling at the Roppongi office in Tokyo.

Mercari's engineering culture is built on four key principles: Passion For The Product, Grow Together, Solve Through Mechanisms, and Collaborate Openly. The company values diversity and inclusion, creating an environment where anyone can contribute regardless of their background.

The role offers an opportunity to work on a globally-scaling product, collaborate with cross-functional teams, and contribute to Mercari's mission of creating a world where anyone can unleash their potential. You'll be part of an organization that emphasizes continuous learning, technical excellence, and global market understanding.

Working at Mercari means joining a company that's committed to eliminating discrimination and creating equal opportunities for all. The position comes with a structured recruitment process including skill assessments and reference checks, ensuring a fair and thorough evaluation of candidates.

Senior Software Engineer position at Mercari, focusing on ReactNative development for the US app, requiring 5+ years of experience and expertise in TypeScript and mobile development.

Software Engineer, ReactNative - US App

A marketplace app company focused on circulating all forms of value to unleash potential in people.

Mercari, a marketplace app company founded in 2013, is seeking a Software Engineer for their Cloud Infrastructure/Networking team. The role focuses on making communication between customers and systems smooth, reliable, and secure. The Networking Platform Team manages the entire network infrastructure from CDN to cloud, service mesh, and physical data centers. 

The ideal candidate should have strong platform networking and infrastructure system development background, with hands-on DevOps experience. You'll work on implementing and stabilizing Istio service mesh, migrating Kubernetes clusters, and developing tools that support the entire software development cycle.

The position offers unique challenges in a dynamic environment where you'll have opportunities to make impactful improvements to large-scale systems. You'll collaborate with SRE and Security teams to enhance platform security and reliability, while automating operations to improve efficiency.

Working at Mercari means joining a company with a strong mission to "Circulate all forms of value to unleash the potential in all people." The company values diversity and inclusion, creating an environment where anyone sharing their mission and values can contribute regardless of background.

The role requires proficiency in various technologies including Golang, Python, Kubernetes, and extensive knowledge of networking concepts. You'll be part of a team that follows Mercari Engineering Principles: Passion For The Product, Grow Together, Solve Through Mechanisms, and Collaborate Openly.

Senior Cloud Infrastructure Engineer role at Mercari, focusing on network infrastructure, service mesh, and platform development using Golang, Python, and Kubernetes.

Software Engineer, Cloud Infrastructure / Networking

Mercari, founded in 2013, is seeking a Software Engineer for their Cloud Infrastructure and Networking team. The role focuses on making communication between customers and systems smooth, reliable, and secure. The Networking Platform Team manages the entire network infrastructure from CDN to cloud, service mesh, and physical data centers. You'll work on implementing Istio service mesh, migrating Kubernetes clusters, and improving platform features. The ideal candidate should have strong networking expertise, cloud platform experience, and coding skills in Go/Python. You'll collaborate with SRE and Security teams while automating operations and developing tools for internal users. The position offers flexible work hours in a hybrid setting at their Tokyo office. Mercari values diversity and aims to create a world where everyone can freely create value, regardless of their background. The company culture emphasizes passion for product, growth, solving through mechanisms, and open collaboration.

Senior Cloud Infrastructure Engineer role at Mercari focusing on networking, Kubernetes, and service mesh implementation with hybrid work in Tokyo.

A technology company operating Japan's largest marketplace app, expanding into cryptocurrency and blockchain services through Mercoin.

Mercari, through its subsidiary Mercoin, is seeking a Frontend Software Engineer to join their cryptocurrency and blockchain services team. The role involves developing web applications for both B2B and B2C services within the Mercoin ecosystem. The company was founded in 2013 with a mission to circulate value and expand possibilities for everyone through technology.

The position offers unique challenges in developing high-quality financial and blockchain applications where security, performance, and accessibility are crucial. You'll be working with modern technologies like TypeScript, React, and Next.js, while having the opportunity to shape the future of digital value exchange through blockchain technology and NFTs.

The development environment includes modern tools and platforms such as Google Cloud Platform, Terraform for infrastructure management, and industry-standard development tools like Circle CI, GitHub, and JIRA. The team emphasizes quality in both functional and non-functional requirements, ensuring the best possible user experience for customers.

As part of Mercoin's frontend team, you'll contribute to various projects, from merchant tools to customer-facing applications. The role requires strong technical skills, an understanding of financial technology, and the ability to work in a collaborative environment. The company values diversity and inclusion, welcoming candidates from various backgrounds who share their mission and values.

The position offers flexible working hours and the opportunity to work on cutting-edge technology in the intersection of e-commerce, cryptocurrency, and blockchain. You'll be part of a team that's creating new ways for people to exchange value, whether it's through cryptocurrency, NFTs, or other digital assets.

Frontend Software Engineer position at Mercoin, developing cryptocurrency and blockchain web applications using React and TypeScript in a hybrid work environment.

Software Engineer, Frontend - Mercoin

Mercari is a company that operates a flea market app, aiming to circulate value and expand possibilities for people.

Mercoin is seeking a Product Engineer, Backend to join their team in developing cryptocurrency and blockchain-related services. The role involves working on the main backend systems and cryptocurrency exchange systems for Mercoin. Key responsibilities include:

- Development and operation of Bitcoin trading services
- Web application development and API development using Go
- Microservice interface design using Protocol Buffers + gRPC
- Service improvement through quantitative and qualitative analysis of user behavior logs
- Architecture design and middleware selection based on application requirements
- Performance tuning, monitoring, and alert response for microservices

The ideal candidate will have experience in web application development, database design, and software architecture. They should be proactive, flexible, and eager to learn new technologies. The role offers unique challenges such as providing new cryptocurrency-related features to Mercari's 23 million monthly users and leading the transformation of the financial landscape through cryptocurrency and blockchain technology.

Development environment includes Go, Google Cloud Platform, Terraform, BigQuery, Datadog, CircleCI, and various other tools. The team follows Agile development methodologies.

This position requires either:
- English: Independent (CEFR - B2) / Japanese: Basic (CEFR - A2)
- Japanese: Independent (CEFR - B2) / English: Basic (CEFR - A2)

Mercari offers a flexible work style, competitive salary, and various benefits including social insurance, incentive programs, and family support systems.

Product Engineer, Backend - Mercoin

Mercari is a marketplace app born in 2013 that aims to circulate all forms of value to unleash the potential in all people.

Mercari is seeking Software Engineering interns to join their team and work on developing features for the Mercari marketplace app in Japan or the Merpay mobile payment service. This internship offers a unique opportunity to work in the same environment as full-time members, allowing interns to acquire new skills, immerse themselves in the company culture, and take on bold challenges without fear of failure.

Interns will join a team of software engineers from diverse backgrounds and work on projects to improve the UX and specifications of Mercari, Merpay, and Mercari Shops products. The specific content of the work will involve handling technology and data to produce output, such as improving the search screen to enhance the listing and purchasing experience.

Candidates should be students of 16 years of age or older who would be able to join Mercari Group as new graduates from July 2025 to June 2026. They should have an interest in joining Mercari Group as a software engineer after the internship, possess basic knowledge of RDBMS and SQL, and have experience in developing/operating products.

The internship requires proficiency in either English or Japanese at an Independent (CEFR - B2) level. The work location is in Roppongi, Tokyo, Japan, with the option for remote work under Mercari's "Your Choice" work style policy.

Mercari offers a competitive hourly wage and benefits including full transportation coverage, custom PC, visa support, and accommodation for those from outside the Tokyo area. The internship is expected to last about 3 months, with a minimum of 20 hours of work per week.

This internship provides an excellent opportunity for aspiring software engineers to gain hands-on experience in a dynamic, tech-driven environment while contributing to Mercari's mission of circulating value and unleashing potential in all people.

Join Mercari as a Software Engineering Intern to develop features for their marketplace app and mobile payment service. Gain hands-on experience in a dynamic tech environment.

Software Engineer - Mercari/Merpay/Mercoin/Mercari Hallo (Internship)

A tech company creating opportunities for individuals to realize their dreams and contribute to society

Mercari is seeking interns to develop features for the Mercari marketplace app and Merpay mobile payment service in Japan. The ideal candidate should have a shared belief in Mercari's mission, basic knowledge of RDBMS and SQL, and experience in backend, frontend, mobile development, machine learning, platform engineering, or site reliability engineering. The internship offers a unique opportunity to work on real projects, acquire new skills, and immerse in the company culture. Mercari values diversity and offers a supportive environment for personal and professional growth.

Join Mercari as an intern software engineer in Japan, working on developing features for their marketplace app. Full transportation coverage and accommodation provided. Salary negotiable. Remote work available.

Intern Software Engineer - Mercari

Mercari aims to create a world where anyone can unleash their potential by using technology to connect people globally.

Mercari, a technology-driven company, is currently seeking a Cloud Cost Management Engineer to join their team. The role involves ensuring effective cloud infrastructure usage, cost optimization, and visibility. It requires collaboration with various stakeholders to manage cloud resources efficiently. The ideal candidate should have experience in infrastructure management, cloud operations, and excellent communication skills. With Mercari's commitment to diversity and equality, this role offers a chance to be part of a global initiative to connect people and unleash their potential.

Join Mercari as a Cloud Cost Management Engineer in Roppongi with a competitive salary offering complete health insurance. Be part of Mercari's technology-driven mission in the cloud infrastructure market. Hiring entry-level to mid-level Cloud Cost Management Engineers in Tokyo, Japan.

Cloud Cost Management Engineer

Creating opportunities for individuals to realize their dreams and contribute to society through technology.

Mercari, a technology company focused on connecting people worldwide and using technology to create opportunities for individuals to realize their dreams, is hiring a software engineer for its Platform Group. The role involves designing, developing, and maintaining platform features and toolings, supporting migration to new platforms, enhancing platform security and reliability, and automating daily platform operations. The ideal candidate is passionate about improving developer productivity, infrastructure automation, and platform development. Mercari values inclusion and diversity, aiming to eliminate discrimination in the workplace. This role offers the chance to work on impactful projects that can influence the organization's performance globally, making it a great opportunity for software engineers.

Join Mercari as a Software Engineer in Platform Group at Roppongi with a salary based on skills and abilities. Enjoy benefits like health insurance and relocation support.

Mercari Engineering Jobs

A global marketplace platform company that enables circulation of value through their marketplace app.