Hi,I'm MasatoTsunematsu

The coke drinkinginfrustructure engineerbased in Japan

Masato Tsunematsu

Biography

On January 1st, 1994, I was born in the jungle and raised by a gorilla.

One day, I acquired wisdom by eating the legendary banana and decided become to awesome engineer that useful for people.

Experience

Apr 2016 - Sep 2016

Network programming

Participated in the research and development of a video streaming system using SDN with OpenFlow, handling design, development, and testing.

Gained knowledge in networking and infrastructure through network programming with Python, in addition to programming skills.

Oct 2016 - May 2020

Database administration

Worked as a database administrator for several B2C companies, responsible for designing, building, testing, and operating Oracle Database, MySQL, PostgreSQL, and SQL Server in both on-premises and AWS environments.

Focused on performance tuning through memory optimization, index design, and SQL refactoring. Achieved efficient operations using infrastructure as code with Terraform and automation scripts.

Also contributed to application development by leveraging experience as a programmer.

Jun 2020 - Present

Cloud migration

Worked as an infrastructure engineer on several government-related projects involving system migration from on-premises to AWS. Responsibilities spanned proposal, requirements definition, design, development, testing, operation, and maintenance.

Migrated proprietary RDBMS to Amazon RDS and Aurora, and transitioned application platforms to Amazon ECS to maximize the benefits of cloud services within practical constraints. Contributed to efficient infrastructure provisioning using IaC tools such as CloudFormation, AWS CDK, and Ansible.

Capability

I can transform into legendary warriors known as the Cure Gorilla.

With the assistance of creatures known as fairies, use their physical powers and enhanced Banana to fight against evil forces and organizations who create monsters to bring misery to the Earth and further their plans.

In addition, I have the following skills:

Programming:
TypeScript, Python, Go, Ruby, Java
Database:
Oracle, MySQL, PostgreSQL, Db2, Amazon RDS / Aurora / DynamoDB / DocumentDB, Elasticache
Cloud:
Amazon Web Service, Microsoft Azure
IaC:
AWS CDK, CloudFormation, Ansible, Terraform
Monitoring:
CloudWatch, Zabbix, Mackerel
Other:
Git, Docker

Showcase

Showcase some products.

dotfiles

  • #dotfiles
  • #macos-setup

My macOS dotfiles. Automate the setup by deploying configuration files with stow, installing packages with Brewfile, and configuring the OS with defaults command.

FizzBuzz Generic Library in Go

  • #golang
  • #fizzbuzz

This is a flexible and reusable FizzBuzz library implemented in Go using generics.

It allows you to define custom rules and actions for any type, making it easy to extend the traditional FizzBuzz pattern beyond simple integers.

Get in touch

Want to get in touch? I'm not currently looking for a job, but welcome feedback and chat. Please ping me on socials or email below. I will try my best to reply to you.

Colophon

Thank you for visiting my site. This site is built with Nuxt.js and Tailwind CSS and hosted on GitHub Pages. The code is available on GitHub.

I am not a native English speaker, so I apologize if the English on the site content is incorrect. But I did my best to create this site to practice my English as well.