Hi, I'm Makoto Hasegawa.
Infrastructure engineer who is focusing on container/cloud/devops/automation/etc.

Working at CyberAgent,Inc based in Tokyo, Japan.
Welcome to my portfolio!!

About Me


  • 03.2001
  • Bachelor of Arts in Economics
  • Statistics Seminar (2 years)
  • Keio University, Tokyo, Japan

Work Experience

  • 07.2012 - present
  • CyberAgent, Tokyo, Japan
  • Technical Lead Infrastructure Engineer (AI Division)
  • Provide technical leadership and coaching to developers and engineers.
  • Identify computer or network equipment shortages and place orders.
  • Develop and maintain private OpenStack cloud.
  • Develop and maintain Kubernetes as a Service platform on private cloud.
  • Infrastructure Engineer (New Business Unit / Ameba Division)
  • Designing functional technology solutions.
  • Install and configure appropriate software and functions according to specifications.
  • Monitor performance and troubleshoot issues and outages.
  • 04.2001 - 06.2012
  • Fujisystems, Yokohama, Japan
  • Systems Engineer
  • Installing, configuring, testing and maintaining operating systems,
  • application software and system management tools
  • for ISP(Internet Service Provider) system.


  • Certified Kubernetes Administrator (CKA-1700-0150-0100)
  • Certified Kubernetes Application Developer (CKAD-1800-0005-0100)
  • Certified Kubernetes Security Specialist (LF-e1d0w849t0)


  • Container Runtime Meetup Organizer
  • CNBF(Cloud Native Brite Future) Organizer

Speakings / Slides

You can see more slides on my speakerdeck and my medium writings if you want.

Japan Container Days v18.12 [Japanese] (YouTube)

Japan Container Days v18.04 [Japanese] (YouTube)

OpenStack Summit Vancouver 2015 (YouTube)

OpenStack Summit Tokyo 2015 keynote (YouTube)

About Kubernetes RuntimeClass

Monitoring Kubernetes Audit Log by Falco [Japanese]

runc だけじゃないコンテナ low level runtime 徹底比較

Docker だけじゃないコンテナ runtime 徹底比較

Kubernetes に Falco を展開してアプリケーションの挙動をモニタリングする [Japanese]

CVE-2017-1002101 について理解する [Japanese]

Skills / Contribution


  • Experience with mission critical, 24x7 systems
  • Eagerness and willingness to learn new technologies
  • Evaluate and identify new technologies for implementation
  • Ability to develop software in Golang, Python
  • Mastery in server provisioning tools(Chef, Ansible, Terraform)
  • Familiarity with various operating systems and platforms
  • Love performance tuning, improvement, balancing, usability, automation
  • Ability to design system architecture of public/private clouds

7+ years

5+ years

4+ years

10+ years

6+ years



  • My hobby is playing bass guitar.
  • I enjoy to play the original songs at live house in Tokyo per a couple of month.
  • Are looking for band member? Let's play with me.
  • My favorite genres are Rock and Pop but I love Heavy Metal and Anime too.