Site Reliability Engineer / コンテンツ販売プラットフォーム / LINE platform

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 we are currently unable to extend offers to candidates who are living outside of Japan or do not own a permit to work in Japan. However, we continue to track the situation and once it is safe to proceed with recruiting, we will again open positions to candidates who wish to work at LINE in Japan.



★English follows★

LINEサービスにおける、スタンプ・絵文字・着せかえなどを扱うコンテンツ販売プラットフォームのSite Reliability Engineering (SRE)業務に携わっていただきます。


Java, Spring Framework, RxJava2, Armeria, Nginx, MongoDB, Redis, MySQL, Elasticsearch, Prometheus, Grafana, Zipkin, Central Dogma, Ansible


We are seeking for a Site Reliability Engineer (SRE) to work on the availability and stability of LINE's paid content platform including Stickers, Emojis, and Themes.
These products are a part of the core communication features in LINE and they enhance the interactions among our millions of users on a daily basis.

・Analyze and solve technical problems of system by software engineering.
・Maintain and improve application or middlewares to achieve low latency and high availability.
・Monitor system to detect problems and plan system capacity.
・Develop tools and system to automate the routine operations for efficient software development.
・Participate in the entire software development process including design, development, delivery, monitoring, and improvement.
・Work with other engineers to build the environment, operate the services, and improve continuously to achieve the above goals.

【Our Stack】
Our services are built on these technologies:
Java, Spring Framework, RxJava2, Armeria, Nginx, MongoDB, Redis, MySQL, Elasticsearch, Prometheus, Grafana, Zipkin, Central Dogma, Ansible

【External resources about the team & service】
★English follows★


・最新の Java の利用経験 (Java 8+)
  ・ネットワーク(HTTP 1.1/2, TCP/IP, DNS など)
  ・マイクロサービス、DDD (Domain Driven Design)
  ・RPC (REST, Thrift, ProtoBuf, etc)
  ・非同期 I/O
  ・RDBMS (MySQL, etc)
  ・NoSQL (MongoDB, etc)
  ・分散キャッシュ (Redis, etc)

【Required Experience/Skills】
・Knowledge and understanding in computer science (e.g. use of standard algorithms and data structures, OS, network, database).
・Experience in software development for web services or mobile applications using Java.
・Experience using a Linux/Unix development environment.
・Strong interest and ability to learn any new technical topic.
・Communication ability in Japanese or English.

【Preferred Experience/Skills】
・Experience of using the latest Java programming language (Java 8+).
・Knowledge and experience about JVM.
・Experience in development and operation for large-scale system.
・Ability to analyze and solve technical problems, and automate the tasks.
・System architecture and design experience including but not limited to the following topics:
  ・Networking (HTTP 1.1/2, TCP/IP, DNS etc.)
  ・Micro-services, DDD (Domain Driven Design)
  ・RPC (REST, Thrift, ProtoBuf, etc)
  ・Asynchronous I/O
  ・Task Automation
  ・RDBMS (MySQL, etc)
  ・NoSQL (MongoDB, etc)
  ・Distributed Cache (Redis, etc)
  ・Distributed Transaction
・Open-source software development experience and or participation in open source communities is also a plus.
・Motivated to learn Japanese and English language.
〒160-0022 東京都新宿区4-1-6 JR新宿ミライナタワー23F
専門業務型裁量労働制(1日の労働時間に関わらず1日9.5時間労働したものとみなします。)、フレックスタイム制(コアタイム 11:00〜16:00)、10:00~18:30(実働7時間30分)のいずれか適用 ※面接後に決定
待遇 / 福利厚生



・諸手当:交通費全額支給、LINE Pay Card Benefit Plan(※2)