Kubernetes Engineer

  • Tokyo
  • No Remote
  • Full-time
  • August 29, 2023
3,000,000 - 33,000,000 JPY /yr
Apply from Anywhere 👍
Relocation to Japan 👍
(Overseas visa sponsorship supported)
Language Requirements
Japanese: Not Required 👍
English: Business Level
Minimum Experience
Junior or above

Job overview

As a Kuberbetes Engineer, you will be responsible for exploring new solutions and building out new features, functionality, multi-cloud services and infrastructure from scratch across major cloud providers to serve customers at scale. You will be working closely with developers as the G123 platform grows its portfolio of games and expands globally. Main tasks include:

  • Designing and implementing Network connectivity
  • Assess Provisioning Strategy & design RBAC needs
  • Ensuring strong Cloud foundation is met with compliance requirements
  • Collaborating with other teams on architecting, engineering and optimizing their product for Kubernetes and the cloud
  • Identifying failures in complex interdependent systems and help the team provide a reliable and well documented platform
  • Promoting and establishing conventions among different services for monitoring, provisioning, deployments, and development flows


  • Excellent knowledge of Docker, Kubernetes (K8s)
  • Excellent knowledge of infrastructure and networking
  • Experience working on public cloud services such as AWS, Alicloud, etc.
  • Lead experience designing, building, and maintaining production services in Kubernetes
  • Experience in analyzing and troubleshooting systems
  • Degree in Computer Science and related majors with 4+ years of field working experience

Good to have

  • Experience with Terraform or other equivalent management framework
  • Developing experience using Python (preferred) / Golang
  • Adaptable to fast-paced startup environment

Language Requirements

  • Can work in Chinese OR Japanese OR English
  • Can read and understand technical documents in English


  • Visa support
  • Free lunch catering (*after 3 months employment) and early-bird breakfast
  • Free in-office Starbucks, coffee, tea, beverages, snacks, sweets, & vitamins/supplements
  • Modern office space in the heart of Tokyo, with views of Tokyo Tower and Mount Fuji
  • Industry-leading work-life harmony: overtime is rare and discouraged
  • Commute expenses covered
  • 30,000 yen rent support if you live 2 stops from Roppongi 1-chome or Kamiyacho stations
  • Bonus for continuous employment (50,000 yen/month added to base salary after 5 years of continued employment)
  • Health insurance
  • Diverse & international environment
  • Working hours: 10:00 – 19:00, Monday to Friday (in-office)

About CTW.inc

Founded in 2013, CTW is Japan’s No.1 browser game company. Our primary service is the G123 IP game platform — which publishes video games based on famous Japanese IP.

We’ve been experiencing steady growth in revenue in the past few years as our player base has exploded to over 50 million users worldwide.

We must grow quickly to keep up with market demand.

Our CEO founded and named this company with the aspiration to "Change the World." As a fast-growing startup, we hope our team will drive themselves to try new things and accelerate their careers to match the rapid expansion of the company.

Our core values are - ambition - drive - simplicity

With global hits like Vivid Army, Queen's Blade, and many more, we’re looking to go from a market leader in Japan to an industry leader globally!



Your compensation will be determined based on your experience as well as the whole interview process. Our salary range is as follows:

  • Level 1: 6-9M JPY
  • Level 2: 8-12M JPY
  • Level 3: 10-33M JPY

The first level is for individual contributors (junior positions), while the last level is for senior and management positions.

CTW is a fast-growing Japanese company, running the html5 based platform “G123”.

Currently G123 distributes free-to-play browser games based on popular Japanese brands, including anime and manga properties to global markets.

View CTW's company page

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Kubernetes Engineer at CTW