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Companies Using Kotlin in Japan

97 companies are hiring Kotlin talent in Japan.

Kotlin is a modern programming language primarily used for Android app development and JVM-based backend services — and companies hiring for it are actively building or scaling mobile-first or microservices-driven products. In Japan, with 101 companies posting over 8,400 Kotlin-related roles, this signal points to organizations investing in new mobile infrastructure, API layers, or modernizing legacy Java systems. These companies are likely in the market for cloud platforms, CI/CD tooling, mobile testing frameworks, and API management solutions.

Buying Signal

When a company in Japan posts Kotlin roles at scale, they're either launching a new Android or backend product line or migrating away from older Java codebases — both scenarios require adjacent tooling purchases. Think cloud hosting expansions, container orchestration upgrades, and mobile analytics platforms. DevOps vendors, cloud providers, and mobile SDK companies should be prioritizing these accounts immediately.

Top Companies44 shown

CompanyIndustryHQ LocationSizeJobsLinks
SCSK Corporation
scsk.jp
 IT Services and IT Consulting Japan 5,001+ 307
Timee, Inc.
timee.co.jp
 IT Services and IT Consulting Minato, Japan 1,001–5,000 529
AnyMind Group
anymindgroup.com
 Technology, Information and Internet Chiyoda, Japan 1,001–5,000 332
Simplex Holdings, Inc.
simplex.holdings
 IT Services and IT Consulting Minato, Japan 1,001–5,000 79
freee.k.k.
freee.co.jp
 IT Services and IT Consulting Shinagawa, Japan 1,001–5,000 106
CyberAgent, Inc.
cyberagent.co.jp
 Technology, Information and Internet Shibuya, Japan 1,001–5,000 388
GLOBIS Corporation
globis.com
 Education Chiyoda, Japan 1,001–5,000 114
Mercari, Inc.
mercari.com
 Software Development Minato, Japan 1,001–5,000 94
ココネ株式会社
cocone.co.jp
 Technology, Information and Internet Japan 1,001–5,000 37
BIPROGY Inc.
biprogy.com
 IT Services and IT Consulting Koto, Japan 1,001–5,000 104
株式会社ベネフィット・ワン
benefit-one.co.jp
 Business Content Shinjuku, Japan 1,001–5,000 27
株式会社 内田洋行
uchida.co.jp
 IT Services and IT Consulting Chuo, Japan 1,001–5,000 42
株式会社アンドパッド
andpad.co.jp
 Technology, Information and Internet Chiyoda, Japan 501–1,000 215
ＡＲアドバンストテクノロジ株式会社
ari-jp.com
 IT Services and IT Consulting Shibuya, Japan 501–1,000 147
METATEAM株式会社
metateam.co.jp
 Information Technology & Services Minato, Japan 501–1,000 63
RAKSUL
raksul.com
 Technology, Information and Internet Chiyoda, Japan 501–1,000 73
株式会社ジｰニー
geniee.co.jp
 Advertising Services Shinjuku, Japan 501–1,000 153
Chatwork
kubell.com
 Software Development Minato, Japan 501–1,000 56
Cybozu, Inc.
cybozu.co.jp
 IT Services and IT Consulting Chiyoda, Japan 501–1,000 55
フューチャー・アンティークス株式会社
futureantiques.co.jp
 Information Services Shibuya, Japan 501–1,000 35
Safie Inc.
safie.co.jp
 Software Development Shinagawa, Japan 501–1,000 35
Oisix ra daichi
oisixradaichi.co.jp
 Food and Beverage Services Japan 501–1,000 9
KINTO Technologies Corporation
kinto-technologies.com
 Software Development Chuo, Japan 201–500 117
LIG inc.
liginc.co.jp
 IT Services and IT Consulting Taito, Japan 201–500 62
Bitkey Inc. | 株式会社ビットキー
bitkey.co.jp
 IT Services and IT Consulting Chuo, Japan 201–500 55
Demae-can
demae-can.com
 Technology, Information and Internet Shibuya, Japan 201–500 59
Synergy Marketing, Inc.
synergy-marketing.co.jp
 IT Services and IT Consulting Osaka, Japan 201–500 23
Yappli
yapp.li
 IT Services and IT Consulting Minato, Japan 201–500 16
エムディー株式会社
emdi.co.jp
 Business Consulting and Services Minato, Japan 51–200 116
Trust株式会社
trust-partner.co.jp
 IT Services and IT Consulting Chuo, Japan 51–200 62
株式会社ワクト
wakuto.net
 Software Development Minato, Japan 51–200 16
Fuller, Inc.
fuller-inc.com
 Technology, Information and Internet Kashiwa, Japan 51–200 14
SMALL WORLD / Work in Japan?
smallworld.inc
 IT Services and IT Consulting Japan 51–200 25
Nextscape,INC
nextscape.net
 IT Services and IT Consulting Minato, Japan 51–200 16
KANNA
kanna4u.com
 Software Development Minato, Japan 51–200 17
KAUCHE, Inc.
kauche.com
 Online and Mail Order Retail Japan 11–50 75
handy Japan
handy.travel
 Telecommunications Minato, Japan 11–50 23
Rakuten
rakuten.com
 Software Development Setagaya, Japan 10,001+ 1,328
MUFG
mufg.jp
 Financial Services Chiyoda, Japan 10,001+ 1,075
Honda
global.honda
 Motor Vehicle Manufacturing Minato, Japan 10,001+ 608
Sony
sony.com
 Entertainment Providers Minato, Japan 10,001+ 152
Toyota Motor Corporation
global.toyota
 Motor Vehicle Manufacturing Toyota, Japan 10,001+ 170
LY Corporation
lycorp.co.jp
 Software Development Chiyoda, Japan 10,001+ 106
Mitsui Chemicals Group
mitsuichemicals.com
 Chemical Manufacturing Chuo, Japan 10,001+ 66

97 companies use Kotlin. Want the full list?

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Companies with open Kotlin roles in Japan. Company HQ may be in a different location.

Market Signal

Over 8,400 open roles across 101 companies is a concentrated signal — this isn't broad experimentation, it's deliberate platform investment. The ratio of roles to companies suggests several firms are making Kotlin a core engineering language, not just piloting it.

Stack Intelligence

The co-occurrence of Java, Spring, and Jetpack Compose alongside Kotlin reveals companies running hybrid stacks — likely mid-migration from Java monoliths to Kotlin-native services or Android UI modernization using Compose. Spring's presence confirms these aren't greenfield startups; they're established engineering teams rebuilding production systems. For sales teams, this combination identifies buyers who need enterprise-grade tooling, not lightweight developer tools.

Hiring Landscape

Kotlin in the Market

Where and how companies hire Kotlin talent

By Industry

IT Services and IT Consulting
29
Software Development
18
Technology, Information and Internet
14
Financial Services
5
Appliances, Electrical, and Electronics Manufacturing
3
Facilities Services
3
Motor Vehicle Manufacturing
3
Telecommunications
3

Top Roles

Project Manager52Product Manager50Backend Engineer38Software Engineer34Data Engineer28Front End Engineer27Qa Engineer23Engineering Manager22Infrastructure Engineer22Business Development21Engineer21Data Scientist20

Related Technologies

JavaSpringJetpack Compose
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Frequently Asked Questions

What is Kotlin?

Kotlin is a programming language used to build Android applications and server-side services, often replacing or running alongside Java in mature engineering organizations. Companies hiring for Kotlin are typically scaling their mobile or backend product teams with a focus on long-term maintainability. That hiring activity is a direct indicator of active platform investment.

Why should sales teams track Kotlin hiring?

Kotlin hiring signals active software builds — not maintenance cycles — which means budget is flowing toward new tools and infrastructure. A DevOps platform or cloud vendor monitoring these 101 Japanese companies can time outreach to coincide with the build phase, before contracts are locked.

Who should be selling to companies that use Kotlin?

Vendors best positioned to sell here include cloud infrastructure providers, mobile testing and observability platforms, CI/CD and DevOps tooling companies, and API management or backend-as-a-service solutions.