This position is closed and is no longer accepting applications.

Frontend Engineer, Delivery Infrastructure

LINE Corp. Shinjuku-ku, Tokyo
  • 💴 No salary range given
  • 🏡 Partially remote
  • 🧪 Minimum years of experience unspecified
  • 💬 Fluent Japanese
  • 🌏 Apply from abroad
  • 🧳 Relocate to Japan

About LINE Corp.

LINE Corp. Shinjuku-ku, Tokyo

At 83 million domestic users, or 65% of the population, LINE is Japan's most popular messaging application. It is also popular throughout Asia, boasting approximately 186 million users globally.

Key benefits

  • Build reliable systems at scale
  • Room to grow
  • Healthy work/life balance

About the position

It is required for LINE to have a highly scalable and reliable infrastructure that controls applications deployed on thousands of machines because of its growing business.

Our team, Delivery Infrastructure Team, is responsible for the in-house deployment system that enables LINE engineers to deploy applications every day.

The mission of our team is ‘Take leadership among company-wide deployment systems to provide innovated and WOW! deployment ecosystem for all of LINE engineers’.

Our current deployment tool stack consists of some components as follows. You will need to enhance some of them or introduce new frontend techniques when necessary:

  • Application deployment system that distributes, restarts, and rollbacks applications to thousands of servers
  • An inventory management system that manages the servers, clusters, and authorization
  • Deployment orchestration pipeline system that controls multiple project’s deployment flows

Your main responsibility will include the following things.

  • Lead, design, and develop frontend for the in-house deployment system
  • Keep the applied frontend technology updated following industry standard
  • Cooperate with developers and UX designers inside and outside of the team to solve the problem
  • Code review for colleagues in the team to maintain good code quality


  • Extensive experience in development with a focus on JavaScript
  • Expertise knowledge of HTML/CSS/JavaScript
  • At least 3 years of experience developing of web application development
  • Knowledge of accessibility/utility
  • Experience in front-end development project that utilizes Node.js tools (e.g. npm, babel, eslint)

Nice to haves

These aren’t required, but be sure to mention them in your application if you have them.

  • Experience in leading a frontend development project
  • Experience with React or Vue and their frameworks like Next.js or Nuxt.js
  • Experience with Single Page Application (SPA) or Server-side Rendering(SSR) web application
  • Experience with TypeScript
  • Experience in server-side development (e.g. Node.js, Java, etc)
  • Experience with CI (continuous integration) and DevOps practice
  • Contributions to or active participation in the OSS community

Meet LINE Corp.'s Developers

Photo of Swapnali Koli

Joining LINE as a QA Engineer

with Swapnali Koli

Swapnali had been working at a Japanese company as a QA Engineer. Looking for a new challenge, she joined LINE, where she’s led their private cloud API automation project.

Read her story...

Li was working in Toronto when he was recruited to join LINE as a principal engineer. He tells his story of relocating to Japan.

Read his story...
Photo of Matthew Bailey

Growing a career in Japan

with Matthew Bailey

Starting as a server side engineer at LINE, Matt is now a software development manager. He shares his experiences of finding a job in Japan, and gives tips on how you can be successful at landing one too.

Read his story...

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