Software Engineer, Frontend

  • Tokyo
  • Remote OK - Anywhere in Japan
  • Full-time
  • November 29, 2023
Apply from Anywhere 👍
Relocation to Japan 👍
(Overseas visa sponsorship supported)
Language Requirements
Japanese: Business Level
English: Business Level
Minimum Experience
Mid-level or above

Position Overview

Work Responsibilities

  • As Mercari continues to become a rising platform in the market attracting up to 100 million users, Merpay has laid out its mission to provide new value to customers on top of what Mercari already offers. As a software engineer (frontend) at Merpay, you will work on web application development for Merpay’s payment and financial services. We are a payment and financial service that not only engages in B2B service development but also B2C service development. You can get the opportunity to be involved in both.

  • Job Description

    • Develop application forms for merchants dashboards

    • Develop merchant support tools

    • Develop customer support tools

    • Develop B2C services such as Mercari Web

  • Development Environment

    • Programming languages: HTML, CSS, JavaScript (TypeScript, Vue.js, Nuxt)

    • Infrastructure: Google Cloud Platform (Compute Engine, Kubernetes Engine, App Engine)

    • Configuration management tools: Terraform

    • Other: Circle CI, GitHub, Slack, JIRA, Crowi, Spinnaker

Bold Challenges

  • Merpay aims to tackle a wide range of challenges. We handle many different projects, and the frontend team works on each project’s web development. Merpay frontend team members are able to take on various product developments.

  • Due to the nature of our service, our payment and finance applications are required to have high security, performance and accessibility. You will be required to work not only on feature development but also on non-feature requirements such as improving quality by applying high technical skills to deliver value to our customers at Merpay.

  • Merpay front-end team uses technologies such as Vue.js, Nuxt.js, and TypeScript for app implementation. We, of course, welcome those with experience using Vue.js or React, but any engineer capable of staying up to speed with the changes in frontend technology and selecting the right tools for the development of our product should feel free to apply.


Required Experience

  • Ability to use HTML and CSS to implement solid user interfaces

  • Basic knowledge of performance, accessibility, and security

  • Understanding of version management and ability to participate in development via Git

  • Knowledge of JavaScript and experience developing with UI libraries or frameworks such as React, Vue.js, and Angular

  • Able to understand and explain web operation principles and browsers

Preferred Experience

  • Extensive knowledge of standard web technologies and specialized knowledge in some areas

  • Understanding of the characteristics of different libraries/frameworks and the ability to introduce them to projects where necessary

  • Ability to design architecture based on the characteristics of the app

  • Ability to consistently take initiative in implementing improvements to the app

Screening Criteria

  • Has a strong, shared belief in Mercari and Merpay’s missions and values

  • Capable of going bold and possessing a strong sense of responsibility in regards to their work

  • Proactive and capable of thinking independently for the good of the team

  • Possesses excellent communications skills which can push organizations and projects forward

Technical Assessment Criteria

  • We are looking for individuals who satisfy the criteria listed under the Required Experience and Preferred Experience, and is able to contribute to product development using advanced technical knowledge and skills surrounding Web technology.

Language Requirements

  • English or Japanese: Independent (CEFR-B2)

    *For details about CEFR, see here

Working Conditions

Employment Status


  • Probationary period: First 3 months after joining the company. (During this period your contract conditions will be the same as that of a permanent employee.)



  • Smoking is prohibited within our offices

  • Mercari has introduced a work style policy called “Your Choice.” Each member is free to choose whether they want to work in the office or work fully remote. *Exceptions made for certain kinds of work.


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