Software Engineer (Monitoring System) - Working in Japan at LINE Fukuoka (Fukuoka, Japan)


Please read before applying.

The health and safety of our employees and candidates is very important to us.

Due to the coronavirus (COVID-19) pandemic we are currently facing difficulties applying for working visas and traveling into Japan is restricted.
Under these circumstances, please understand that for candidates who receive an offer and are living outside of Japan or do not own a permit to work in Japan,
there may be delays with entry into Japan and your subsequent commencement date.
Please apply only if you agree to the above condition.

*Please apply to only one position at a time.

Job Description:

We provide a server monitoring system based on Prometheus as a service to support LINE Engineers as they operate a variety of services under the LINE Family.

We developed Promgen, a tool to manage Prometheus and Alertmanager configuration, so that development engineers can take control of their own monitoring. By monitoring and forecasting resource usage, we develop tooling to deal with problems before they occur.

Specifics of Job Description

  • Development of LINE Family Service Observability and Monitoring

  • Development Support/Improving

  • Observing usage of resources, development of prediction tools

  • To develop tooling around Prometheus and the greater Prometheus ecosystem

Technology We Use

Prometheus, Saltstack, Python, Django

No Language Skills Required

This position requires no prior Japanese language skills. We have a robust English support team and there are many English-speaking employees. Successful applicants without Japanese language skills will be required to attend a Japanese language course for at least the first three months to one year after joining LINE Fukuoka. The language course is sponsored by LINE and is an excellent opportunity to acquire the language.

Required Skills

  • 3+ years of professional experience in maintaining and operating a variety of internet services

  • 3+ years of professional experience in troubleshooting and operating linux servers

  • Experience in developing with multiple programming languages (any language experience is welcome)

Preferred Skills

  • Familiarity with Prometheus and the greater Prometheus ecosystem

  • Saltstack/ Ansible/ Configuration management experience

  • Django experience

  • Log management tools (fluentd, Elasticsearch)

  • OSS contribution experience

Who We’re Looking For

  • Individuals with an eagerness to explore, willingness to learn new technologies, who are intellectually curious, and dares to take on new challenges

  • Individuals with sophisticated communication skills who can break down and explain complex matters to anyone

Working Hours:

Discretionary and flexible according to ability and speed of work; if projects are completed on time there is no need to work for extended periods of time.


Minimum salary starting from 6 million Japanese yen per annum (salary based on experience and ability).

*Other details to be discussed during the interview process.