tototoshi.github.io

About me

Name: Toshiyuki Takahashi
GitHub: github.com/tototoshi

Skills

Write Scala, Java, and, some scripting languages
Have 10 years of experience as a back-end engineer
Be sometimes a full-stack engineer

Education

April 2005/04 - 2009/03

Department of Earth and Planetary Physics, The University of Tokyo.

Work Experience

April 2015

Self-employed

I've been working as a freelancer for the past several years. I only accept remote jobs.

I have currently two main tasks. One is about the payment infrastructure for my previous employer and another is developing systems for a securities company. My role is to write robust code with the advantage of Scala. I also provided technical support and consulting on Scala but I am currently too busy to accept that kind of request.

Projects

Developed a trading system for a securities company
Provided technical support for Scala to several companies
Developed some web applications and an Android application

Technology

Scala, Java
Play, Akka
RabbitMQ
Protocol buffers
PostgreSQL, MySQL
React
Android
etc.

September 2013

Software engineer at pixiv Inc.

"pixiv" (a Japanese illustration community) was growing rapidly at the time. I improved the backend for image submissions so that it could stand the high load that comes once a year.

The source code of pixiv at the time had problems in quality, so I reintroduced Jenkins, which was there but not being used, and created a culture of writing CI and unit tests. In the process, I wrote and introduced a library called StaticMock, which is still heavily used.

Even after quitting the job for health reasons, I've been working with them as a freelancer.

Projects

Introduced unit test, CI, and CD
Wrote StaticMock
Speeding up the image upload backend
Refactored everything and reduce 100,000 lines of code
Blue-Green Deployment
Migrating data storage to a new one

Technology

PHP
MySQL

November 2011

Software engineer at M3 Inc.

It was so long ago that I don't remember much about it, but I developed various web services using Spring MVC.

I also introduced Play Framework 2, which had just been released at the time. I did a lot of debugging it, and you can see the pull requests I sent to Play at the following URL. playframework/playframework/commits?author=tototoshi