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Companies Using Ruby in Japan

102 companies are hiring Ruby talent in Japan.

Ruby is a backend programming language most commonly deployed in web application development, where it powers everything from SaaS platforms to internal tooling. Companies hiring Ruby engineers in Japan are typically building or scaling web-based products, signaling active spend on cloud infrastructure, database tooling, and API integrations. The adjacent needs are predictable: teams that run Ruby almost always need managed hosting, relational databases, and caching layers.

Buying Signal

When a company posts Ruby roles, it usually means a product build or rebuild is underway — not maintenance mode. These companies are actively evaluating or expanding their toolchain, making them warm targets for vendors selling developer platforms, observability tools, or cloud services. DevOps vendors, infrastructure SaaS companies, and database providers should be prospecting this list immediately.

Top Companies46 shown

CompanyIndustryHQ LocationSizeJobsLinks
Timee, Inc.
timee.co.jp
 IT Services and IT Consulting Minato, Japan 1,001–5,000 529
Dentsu Digital
dentsudigital.co.jp
 IT Services and IT Consulting Minato, Japan 1,001–5,000 119
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
Advantest
advantest.com
 Semiconductor Manufacturing Japan 1,001–5,000 81
ADK
adk.jp
 Advertising Services Chiyoda, Japan 1,001–5,000 47
Topcon Corporation
topcon.co.jp
 Medical Device Itabashi, Japan 1,001–5,000 164
Money Forward, Inc.
moneyforward.com
 Technology, Information and Internet Minato, Japan 1,001–5,000 328
MIXI, Inc
mixi.co.jp
 Software Development Shibuya, Japan 1,001–5,000 91
DIP Corporation (ディップ株式会社)
dip-net.co.jp
 Facilities Services Minato, Japan 1,001–5,000 43
JERA Co., Inc.
jera.co.jp
 Oil and Gas Chuo, Japan 1,001–5,000 84
株式会社エル・ティー・エス（Consulting firm）
lt-s.jp
 Business Consulting and Services Minato, Japan 1,001–5,000 145
株式会社アンドパッド
andpad.co.jp
 Technology, Information and Internet Chiyoda, Japan 501–1,000 215
株式会社船井総合研究所
funaisoken.co.jp
 Strategic Management Services Chuo, Japan 501–1,000 130
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
giftee
giftee.co.jp
 Software Development Chiyoda, Japan 501–1,000 71
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
サークレイス株式会社 (circlace Inc.)
circlace.com
 IT Services and IT Consulting Chuo, Japan 201–500 44
LIG inc.
liginc.co.jp
 IT Services and IT Consulting Taito, Japan 201–500 62
TableCheck
tablecheck.com
 Software Development Chuo, Japan 201–500 39
Paidy
paidy.com
 Financial Services Minato, Japan 201–500 17
アジアクエスト株式会社
asia-quest.jp
 IT Services and IT Consulting Chiyoda, Japan 201–500 18
株式会社情報戦略テクノロジー
is-tech.co.jp
 Business Consulting and Services Shibuya, Japan 201–500 18
株式会社うるる
uluru.biz
 Information Technology & Services Chuo, 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
Tebiki, Inc. ｜Tebiki株式会社
tebiki.co.jp
 IT Services and IT Consulting Shinjuku, Japan 51–200 80
株式会社JDSC
jdsc.ai
 IT Services and IT Consulting Bunkyō, Japan 51–200 77
株式会社TRAILBLAZER
trail-blazer.co.jp
 Strategic Management Services Osaka, Japan 51–200 69
LRM株式会社
lrm.jp
 IT Services and IT Consulting Kobe, Japan 51–200 39
株式会社ワクト
wakuto.net
 Software Development Minato, Japan 51–200 16
一般財団法人GovTech東京
govtechtokyo.or.jp
 Executive Offices Shinjuku, Japan 51–200 66
KAUCHE, Inc.
kauche.com
 Online and Mail Order Retail Japan 11–50 75
Wizcorp
wizcorp.jp
 Computer Games Suginami, Japan 11–50 36
Vision Base株式会社
visionbase.co.jp
 IT Services and IT Consulting Chiyoda, Japan 11–50 59
株式会社アーキベース
archibase.co.jp
 IT Services and IT Consulting Chiyoda, Japan 11–50 40
株式会社ゴーガ
goga.co.jp
 Information Technology & Services Shibuya, Japan 11–50 39
株式会社MOCHIRON
mochiron-inc.com
 Technology, Information and Internet Shibuya, Japan 11–50 14
Rakuten
rakuten.com
 Software Development Setagaya, Japan 10,001+ 1,328
Nissan Motor Corporation
nissan-global.com
 Motor Vehicle Manufacturing Yokohama, Japan 10,001+ 677
Hitachi
hitachi.com
 IT Services and IT Consulting Japan 10,001+ 823
Honda
global.honda
 Motor Vehicle Manufacturing Minato, Japan 10,001+ 608
FUJITSU LIMITED（JAPAN）
fujitsu.com
 IT Services and IT Consulting Shibuya, Japan 10,001+ 232
LY Corporation
lycorp.co.jp
 Software Development Chiyoda, Japan 10,001+ 106

102 companies use Ruby. Want the full list?

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

Market Signal

107 companies posting over 8,800 Ruby-related roles in Japan points to sustained, not speculative, demand — this isn't a spike driven by one or two large employers. The volume suggests Ruby remains a primary stack choice for product-building companies in the Japanese tech market.

Stack Intelligence

The consistent pairing of Ruby with Rails, Postgres, Redis, and Heroku reveals companies running conventional but production-grade web stacks — teams that prioritize shipping over experimentation. This combination signals mid-maturity engineering orgs: sophisticated enough to need real infrastructure tooling, but not so large they've moved to fully custom solutions. Vendors selling database management, caching optimization, or PaaS alternatives have a well-defined ICP here.

Hiring Landscape

Ruby in the Market

Where and how companies hire Ruby talent

By Industry

IT Services and IT Consulting
30
Software Development
15
Technology, Information and Internet
12
Facilities Services
5
Information Technology & Services
5
Advertising Services
4
Business Consulting and Services
4
Computer Games
2

Top Roles

Project Manager52Product Manager33Software Engineer30Engineering Manager27Backend Engineer25Data Engineer25Engineer23Qa Engineer21Tech Lead20Ai Engineer17Business Development17Data Scientist17

Related Technologies

Ruby on RailsPostgreSQLRedisHeroku
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Frequently Asked Questions

What is Ruby?

Ruby is a backend programming language primarily used to build web applications and APIs, often through the Rails framework. Businesses use it to ship product features quickly, particularly in SaaS and e-commerce. Hiring for Ruby signals an active product roadmap requiring supporting infrastructure.

Why should sales teams track Ruby hiring?

Ruby hiring predicts infrastructure and tooling spend before budget is formally allocated. A sales rep at a cloud hosting or database company who tracks these postings can reach out during the evaluation window, not after a vendor is already selected.

Who should be selling to companies that use Ruby?

The strongest fit vendors are cloud infrastructure providers, managed database services, developer security tools, and application performance monitoring platforms.