Yuki Kokubun
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Yuki Kokubun Email & Phone Number

Software Engineer in Test at DeNA
Location: Sagamihara, Kanagawa, Japan 4 work roles 3 schools
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✓ Verified May 2026 3 data sources Profile completeness 86%

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Current company
DeNA
Role
Software Engineer in Test
Location
Sagamihara, Kanagawa, Japan
Company size
1439 employees

Who is Yuki Kokubun? Overview

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Quick answer

Yuki Kokubun is listed as Software Engineer in Test at DeNA, a company with 1439 employees, based in Sagamihara, Kanagawa, Japan. AeroLeads shows a matched LinkedIn profile for Yuki Kokubun.

Yuki Kokubun previously worked as Group Manager of Software Engineer In Test at Dena and iOS Engineer and Scrum Master at Diverse,Inc.. Yuki Kokubun holds Master Of Engineering - Meng, Computer Software Engineering from The University Of Electro-Communications.

Company email context

Email format at DeNA

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DeNA

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Profile bio

About Yuki Kokubun

I'm interested in "Make the right things the right way."Open-Source Software* Lint for Vim script: https://github.com/Vimjas/Vint* Interpreter of CSP: https://github.com/Kuniwak/csp-fs* Refactoring Example: https://github.com/Kuniwak/reversi-ios* Testable Architecture Example: https://github.com/Kuniwak/TestableDesignExampleBlog posts* How to compare performance on Swift using SIL: https://qiita.com/Kuniwak/items/cbf6b88db249838895b5* Making a compile-time 4-bit Adder for TypeScript: https://qiita.com/Kuniwak/items/983ba68fcf68d915b07d* Solving a quiz using Prolog: https://qiita.com/Kuniwak/items/4fbeb4bd574b2980626f

Current workplace

Yuki Kokubun's current company

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DeNA
Dena
Software Engineer in Test
Sagamihara, Kanagawa, JP
Website
dena.com
Employees
1439
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4 roles

Yuki Kokubun work experience

A career timeline built from the work history available for this profile.

Software Engineer In Test

Dena

Sagamihara, Kanagawa, JP

Group Manager Of Software Engineer In Test

Current
Dena

Tokyo, Japan

Researching various technologies for implementing shift-left testing in smartphone games, including static analysis, efficient automated testing, testable software architecture, and formal verification methods.

Apr 2018 - Present

Ios Engineer And Scrum Master

Diverse,Inc.

Tokyo, Japan

  • Introduced unit-testing culture to the iOS team and the LoC-based velocity(excluded test codes) became 1.7x faster
  • Developed MirrorDiffKit (Swift) for efficient testing
Dec 2017 - Feb 2018

Web Engineer And Scrum Master

Mixi, Inc

Tokyo, Japan

  • Developed css-semdiff (TypeScript) to rewrite CSS to Less over 57,000 linesbecause the CSS had only webkit prefixes but no moz prefixes and the release hadno issues because bugs found before the release using css-semdiff
  • Developed an error reporter (TypeScript) for Mixi to improve our core frameworkquickly and aggressively because the core framework are no longer updated andhad many bugs
Apr 2014 - Nov 2017
Team & coworkers

Colleagues at DeNA

Other employees you can reach at dena.com. View company contacts for 1439 employees →

陈 陈和山 陈和山 Colleague at Dena Yangpu District, Shanghai, China, China View → AT Atsuya Takahashi Atsuya Takahashi Colleague at Dena Japan, Japan View → AR Amin Rastgoo Sisakht Amin Rastgoo Sisakht Colleague at Dena Iran, Iran, Islamic Republic Of View → ST Shonosuke Tokumaru Shonosuke Tokumaru Colleague at Dena Japan, Japan View → FN Fujikake Naoto Fujikake Naoto Colleague at Dena Japan, Japan View → AH Ai Hikima Ai Hikima Colleague at Dena Japan, Japan View → TT Takuya Toyama Takuya Toyama Colleague at Dena Japan, Japan View → 門 門間史晃 門間史晃 Colleague at Dena Tokyo, Tokyo, Japan, Japan View → MK Minami Kobayashi Minami Kobayashi Colleague at Dena Tokyo, Tokyo, Japan, Japan View → 髙 髙木真吾 髙木真吾 Colleague at Dena Greater Tokyo Area, Japan View →
3 education records

Yuki Kokubun education

FAQ

Frequently asked questions about Yuki Kokubun

Quick answers generated from the profile data available on this page.

What company does Yuki Kokubun work for?

Yuki Kokubun works for DeNA.

What is Yuki Kokubun's role at DeNA?

Yuki Kokubun is listed as Software Engineer in Test at DeNA.

Where is Yuki Kokubun based?

Yuki Kokubun is based in Sagamihara, Kanagawa, Japan while working with DeNA.

What companies has Yuki Kokubun worked for?

Yuki Kokubun has worked for Dena, Diverse,Inc., and Mixi, Inc.

Who are Yuki Kokubun's colleagues at DeNA?

Yuki Kokubun's colleagues at DeNA include 陈和山, Atsuya Takahashi, Amin Rastgoo Sisakht, Shonosuke Tokumaru, and Fujikake Naoto.

How can I contact Yuki Kokubun?

You can use AeroLeads to view verified contact signals for Yuki Kokubun at DeNA, including work email, phone, and LinkedIn data when available.

What schools did Yuki Kokubun attend?

Yuki Kokubun holds Master Of Engineering - Meng, Computer Software Engineering from The University Of Electro-Communications.

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