Software Engineer / LINE Account Platform

  • Remote OK - Anywhere in Japan
  • Full-time
  • January 19, 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

LINE has the powerful asset as a platform to provide the basis of connecting user and business. Especially identifying user and providing the data safe and securely across each service is essential to enable the business.

We are finding brilliant talent to develop and operate for company-wide core authentication platform to federate ID and Profile between LINE and other Group companies' services.


Our Department

Z Account Platform is a cross-team department composed of LINE Auth, Messaging, Login server developers, iOS/Android client developers, and group companies' s.


How Existing Members Work

Developers take initiative to decide the project's direction to achieve various services integration over the Account Platform. While continuing the detail spec discussion in dev leaders and PMs, we're about to start MVP development (Minimum Viable Product) in agile way.


Phase of Our Team and Products

Initial development phase after basic architecture design.


Team Attraction

Company-wide platform development and operation from the beginning for LINE and each Group Services to be a gateway role to yield synergy between services.

Valuable experience for product development and problem resolution at LINE/JP users scale (tens of millions users).

Required Skills

  • Bachelor’s degree in Computer Science, a related technical discipline, or equivalent practical experience.
  • Experience in managing technical or engineering products or programs.
  • Basic understanding of the product life cycle, performance, and technical approach for problem-solving.
  • Ability to guide an initiative to create and improve product ideas.
  • Ability to have a proactive effect on an integrated team composed of both technical and non-technical members.
  • Excellent written and verbal communication skills both in person and remote (English and Japanese).


Preferred Skills

  • Master’s, Ph.D. degree, or equivalent experience in Engineering, Computer Science, or other technical fields.
  • Technical knowledge of OAuth 2.0 and OpenID Connect.
  • Concrete service development experience with OpenID Connect or IdP system development experience.
  • In-depth understanding of network. Design & dev experience of client-server protocol and API (REST/RPC) to be suitable for various Web or mobile environments.
  • Technical design, investigation, and troubleshooting experience in distributed systems and micro services.
  • Asynchronous system design and development experience with Non-blocking IO.

Tech Lead

  • Owner experience of BtoC platform.
  • Integration between On-premise and AWS.
  • SRE experience.
  • Development experience in Open API Platforms and/or large-scale systems.
  • Technical communication in Korean.

LINE is the most popular communication app in Japan, Thailand and Taiwan. The diverse platform is continuing to grow rapidly throughout Asia, expanding services around the globe.

Under its corporate mission of "Closing the Distance," we strive to bring people around the world closer to each other, to information, and to services.

Our vision is to become the “life infrastructure” for its users, always ready to fulfill their needs, 24 hours a day, 365 days a year.

With mobile-focused projects in a wide variety of areas including communication, contents, entertainment and others, LINE is expanding into projects related to development, operations, advertising, Fintech, AI, Blockchain and more.


LINE is a global development team with development centers in more than seven countries. Based on the messenger service, we develop and operate various services such as fintech, news, games, and music services.


LINE is a service with more than 185 million MAUs and handles traffic for a variety of services based on this user in real time.


LINE has the ability of the best engineers in each field to develop the best services. It creates individual growth in a global engineering culture.

LINE's policies during COVID-19 are as follows

We’ve introduced a number of initiatives to support our users in Japan and around the world:

  • Remote consultations with medical professionals and one-on-one counseling for those suffering from anxiety and stress stemming from COVID-19 (working w/ Japan’s Ministry of Health, Labour and Welfare)
  • Enabling most of the employees to work from home
  • Moving to conducting recruitment interviews over video chat
  • Shifting all contracts to electronic form to allow those who handle contracts to work from the safety of their homes

    You can find more details about our initiatives in response to the spread of novel coronavirus here
View LINE's company page

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Software Engineer / LINE Account Platform at LINE
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