About LINE Corp.

Shinjuku, 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

In this position, you’ll be responsible for design, develop, and maintain server-side security security modules , microservices, and authentication APIs for LINE messenger and other LINE applications.

Major security features in scope:

  • account and authentication
  • encryption
  • ID federation

Required Qualifications

  • 3 or more years of large-scale backend experience using Java, Go, Rust, or any other statically-typed language
  • Experience with server provisioning, deployment automation, and CI/CD
  • Understanding of basic security technologies (encryption, authentication, OAuth 2.0)

Preferred Qualifications

  • experience implementing or integrating FIDO, OAuth 2.0, OpenID Connect, or other authentication protocols

The ideal candidate

  • is a strong team player
  • approaches tasks with positive, problem-solving attitude
  • is willing and capable to continuously learn and apply new skills and technologies

Language Skills

  • Ability to communicate in English, Japanese, or Korean. Bilinguals welcome.

Meet LINE Corp.'s Developers

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...

Joining LINE from overseas

with Li Liu

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...

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...

Other Jobs at LINE Corp.

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About LINE Corp.

Shinjuku, 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

Other Jobs at LINE Corp.

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