Software Engineer, IaaS Platform, Private Cloud Platform

  • Tokyo
  • Remote OK
  • Full-time
  • November 1, 2022
Apply from Anywhere 👍
Relocation to Japan 👍
(Overseas visa sponsorship supported)
Language Requirements
Japanese: Not Required 👍
English: Business Level

Job Description

English follows Japanese




このポジションで採用された方は、LINEのPrivate CloudであるVerdaの中で特にOSS(OpenStack, Kubernetes、Rancher)を自社向けにカスタマイズやトラブルシューティング等の業務を担当することになります。

Private Cloudを取り巻くソフトウェアのトラブルシューティング (OpenStack, Libvirt, QEMU, Dnsmasq, Kubernetes)


We have multiple on-premise IT infrastructure sites with over 40,000 servers and 1Tbps internet traffic worldwide.
Our infrastructure is growing by 30% annually due to service growth and diversification.

A wide variety of applications are being deployed on the infrastructure everyday and there are more than 2,500 developers in over 10 locations worldwide.

With this scale of infrastructure and developers, Learning and operating cost is too high for developers to deploy their applications with awareness of the infrastructure and its configuration.

We, infrastructure software engineers, are responsible for building and operating the platform which enables it to connect applications and infrastructure seamlessly using software techniques and methods.

In this position, You'll be responsible for OpenStack and its middleware of our private cloud platform "Verda" as follows.
・Resolving operation issues on multiple large scale OpenStack clusters
・Customizing and fixing bugs OSS (mainly OpenStack) to meet our requirements
・Troubleshoot our private cloud related softwares (OpenStack, Libvirt, QEMU, Dnsmasq, Kubernetes)

■Engineering Blog
【Team & Project】Meet the Team Developing the Verda Platform Using OpenStack and Kubernetes

Your Qualifications


・3年以上のアプリケーション開発経験(C, Go, Python)

・3+ years of experience of server-side software engineering (C or Go or Python)
・Experience of software trouble shooting
・Knowledge of cloud service (network and storage and virtualization).
・Mind to learn new technologies positively
・Ability to use English (most of communications are done in English)



・Experience operating or integrating OpenStack or Kubernetes
・Ability to troubleshoot OSS with code-level
・Experience customizing OSS for company business requirements
・Experience of contributing OSS
・Experience operating or developing a distributed system
・Experience making presentations in tech conferences

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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