Server-side Engineer

FukuokaLINE FukuokaEngineeringServer-sideFull-time

Type of employment

Permanent employee


Job Description

We will assign the project to you after inquiring about your experience as an engineer and future career preferences.

[Server Development]

You will be operating and performing API/web application development work for server-side features of LINE’s services.

[Responsibilities Include]

・Design, develop, test, deploy, maintain and improve server-side software.

・Contribute to architectural designs which can improve the efficiency and flexibility of our services.

・Mentor and train team members on software design and coding standards.

・Work closely with other teams on the development of end-user facing web applications.

・Support the development of high quality code through active participation in code and design reviews.

[Examples of Server Development Work]

・Development and operation of services which support the sale and delivery of paid content such as Stickers, Emoji and Themes.

・Service development for LINE Family Apps (e.g. “LINE Creators Market”, “LINE Surveys”, “LINE Part Time Jobs”, “LINE Financial” etc.).


[Main Technologies Utilized]

Java, Kotlin, Perl, JavaScript, Thrift, Spring Framework, MySQL, MongoDB, Redis, Kafka, Elasticsearch, Prometheus, Grafana, etc.



[Required Skills]

・Professional knowledge of at least one programming language.

3+ years of experience in software development, including coding experience for web services, or equivalent experience in developing large scale B-to-C services.

・Basic knowledge in computer science (e.g. algorithm, data structure, asynchronous I/O, database, network).

・Work experience using version control systems (VCS), dependency management systems, and continuous-integration systems (CI).

・Communication ability in English and conversational level of Japanese (JLPT N2 or above).

・Whilst there are many English speakers at LINE successful applicants may be asked to attend a Japanese training course for at least 3 ~ 12 months after joining. The training is paid for by us, and is an excellent chance to pick up new language skills.

・Motivation to learn Japanese.

[Preferred Skills]

・Experience developing applications using Java 8+.

・System architecture and design experience.

・Basic knowledge of client side technologies such as HTML, CSS and JavaScript.

・Experience using a Linux development environment.

・Experience in the coaching, management and/or leadership of a technical team.

・Open-source software development experience and/or participation in open source communities is also a plus.

・Strong interest and ability to learn any new technical topic.


Working Location

LINE Fukuoka Corporation.

JRJP HAKATA Building, 12FL, 8-1 Hakataeki Chuogai, Hakata, Fukuoka, 812-0012, Japan


Working Hours

Discretionary working time


Other Benefits

[Working days]

Monday to Friday

[Rest Days, Holidays and Leaves]

Public holiday

Year end and new year holiday

bereavement leave, marriage leave, maternity leave, paternity leave

Annual leave

Refreshment leave (An employee is entitled to 10 days paid leave)

※An employee is entitled to 10 days annual leave with pay after having been employed under a continuous contract for every 5 years.


Fixed annual salary + Incentive (twice/year)

Other details to be discussed during interviews.

[Salary Review]


[Other Benefits]

Transportation allowance, Medical&Social Insurance, LINE Pay Benefit plan

[Implementation of second-hand smoke prevention measures]

Prohibiting Indoor Smoking (other than Smoking Room)

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