Yoshiya Hinosawa

Software Engineer

I'm a software engineer, who specializes in JavaScript,

enthusiastic about OSS, TDD, DDD etc,

based on Tokyo, Japan


  • 2021-

    Deno Land Inc.

    I started contributing to Deno in 2018. The creator, Ryan, invited me to the company in November 2020. I joined Deno in January 2021. I've been working on Deno CLI, Deno Deploy, and other related projects.

  • 2019-2020


    SEQSENSE is a robotics startup in Japan. They provide security guard robots, which mainly work in large buildings. My role wasn't a robotics engineer, but a web frontend engineer who was responsible for the console for controlling robots. The console shows the position and orientation of the robot in real-time using MQTT over WebSocket. I had a really good experience on the front end which interacts with actual devices via the IoT tech stack.

  • 2015-2019


    Worked in Recruit for about 4 years. I mainly worked as a frontend engineer and a frontend tech lead.

  • 2015

    CureApp, Inc.

    CureApp is a medical app startup. I worked with the founders, Satake and Suzuki, on their bootstrap phase.

  • 2014


    Released Open Source Native-JavaScript bridging framework for Mobile. It's basically my own rewrite of PhoneGap. I learned a lot of things about Android's Java and Objective-C.

  • 2012-2014

    GREE, Inc.

    Had experience in a huge enterprise environment.

  • May 2012

    Hello Work App

    I personally released Hello Work App on Google Play. It got some popularity and it has had about 8,000 active installs so far. (The app discontinued now.)

  • 2010-2012

    ZYYX Inc.

    I had an all-around experience with Web Technology in ZYYX. I wrote software here in C++, Java, PHP, Perl, JavaScript, ActionScript etc. There were a very variety of different jobs.

  • 2003-2009

    Graduated Kyoto University

    I was at the Faculty of Science at Kyoto University, studied mainly mathematics and computer science and graduated with B.A.

  • 1995-2001

    Graduated Azabu Gakuen

    I graduated from Azabu Gakuen. I have mixed feeling about this school. The school is very unique in the sense it gives students excessive amount of freedom, and as a result the school is full of chaos constantly. The experience there was very special to me.