What is this?

Welcome to matchaism's portfolio and portal!!

Introduction

Call me matchaism, matcha, maccha, etc.

Interests: Cyber security, Authentication Technology, Network, Server, VR, AR, MR

Skills

Python

Python is my go-to language for hobbies, competitive programming and my work.

I have used Pytorch for Machine Learning and Deep Learning.

HTML, CSS, JavaScript

I use HTML, CSS and JavaScript to develop websites and web services.

I co-developed a website for the school festival in 2020 with fellow developers.

C++

I use C++ in competitive programming when C++ is preferred over Python.

In other situations, I use C++ when I want to use a statically typed language.

Git

I know basic Git commands.

Shell

Bash and Zsh User

Linux

I usually use Ubuntu or Kali Linux.

Links

GitHub

Source codes of my developments and lifehacks

Qiita

Articles about computer technologies

Hatena Blog

Articles about various genres

Docswell

My slides of presentaions and LTs

Goals

Goals in 2026

• Passing Registered Information Security Specialist Examination (IPA)
• Passing Microsoft Certified: Azure Administrator Associate (AZ-104)
• Passing Microsoft Certified: Security Operations Analyst Associate (SC-200)

Achieved in 2025

• Passed Applied Information Technology Engineer Examination (IPA)
• Passed Microsoft Certified: Azure Fundamentals (AZ-900)
• Passed Microsoft Certified: Security, Compliance and Identity Fundamentals (SC-900)
• Passed ITIL4 Foundation (PeopleCert)

Achieved in 2024

• Passed Fundamental Information Technology Engineer Examination (IPA)