SKK Corporation

What SKK Corporation does

SKK Corporation (株式会社エスケイケイ) is a Tokyo-based Japanese IT services company founded in April 1988 (renamed to its current name in May 2001) and operating as a wholly-owned subsidiary of JR East Information Systems (JR東日本情報システム) since 1992. With 34 full-time employees as of July 2025, registered capital of ¥171 million, and a headquarters in Toshima-ku, Tokyo, SKK provides custom computer system development, operation, and management services focused almost entirely on the JR East railway group and adjacent system-integration (SI) enterprises in Japan.

The company's core products are railway-domain ICT solutions, including a real-time Station Sales Management System for ticket issuance and sales reporting, a Railway Company Member Site platform that provides single-login access across ticket reservations, travel, and shopping services, a System Operation Management System for SI companies managing hundreds of concurrent systems, and a Train Congestion Confirmation smartphone application. Underlying technology spans Microsoft .NET (Visual Basic.NET, Visual C#, Visual C++), Java, and web technologies on Windows Server / SQL Server / IIS, with modern infrastructure built on Docker containers, Selenium-based test automation, and Azure DevOps CI/CD pipelines. SKK also maintains R&D in face/image recognition and speech recognition, applied to attendance management, visitor reception, and automated meeting minutes using Microsoft Cognitive Services and Microsoft Speech API.

SKK's business model is contract-based professional services and managed operations: it delivers bespoke system development and ongoing operation/maintenance of internally developed systems to enterprise customers, with pricing negotiated per project and not publicly disclosed. The go-to-market is direct enterprise sales to the parent JR East Information Systems and related group entities, supplemented by a corporate website and careers channel. Revenue derives from two streams — custom system development services and system operation/maintenance services — and is overwhelmingly concentrated in the JR East group; no external revenue split, external ARR, or productized SaaS pricing is disclosed. SKK holds ISO 9001 certification (since September 2002, transitioned to a development-process focus in December 2009) and operates under a formal security policy established in December 2010.

Name

SKK Corporation

Legal name

株式会社エスケイケイ (Kabushiki Kaisha Esu Kei Kei)

Website

https://j-skk.jp

Company type

Private

Founded year

1988

Operating status

Operating

Headcount range

11–50 employees

Short description

SKK Corporation is a Tokyo-based IT services subsidiary of JR East Information Systems providing custom system development and operations services, primarily railway-domain ICT solutions such as station sales management, member portals, operations management, and train congestion applications for the JR East group.

Ownership category

akta.pro rank

Product category

Railway IT Services

NAICS

Custom Computer Programming Services (541511)

SIC

Services-Engineering, Accounting, Research, Management (8700), Services-Engineering Services (8711)

akta.pro primary industry

Captive/Global In-House Center (GIC) Setup & Managed Services (BPAEAMAK)

akta.pro secondary industries

DevOps Consulting & Transformation (BPAEAKAA), Knowledge Management & KCS Programs (BPAEAJAJ)

Keywords

• Custom software development
• Railway ICT systems
• System operation services
• Enterprise system integration
• IT consulting services

Headquarters

HQ city

Toshima

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Custom System Development Services: Contracted system development services including system design, development, and management. Primary revenue stream as a group company of JR East Information Systems, serving railway industry customers and SI enterprises with custom software solutions.
2. System Operations Services: Operation and maintenance services for self-developed systems, providing continuous system management, quality control, and ongoing improvement for customer systems.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

SKK Corporation provides contracted custom system development and system operation services, primarily as a wholly-owned group company of JR East Information Systems. The company designs, develops, operates, and maintains ICT systems for railway industry clients, with a portfolio that includes station sales management systems, railway member-site login platforms, SI-enterprise operation management tools, and smartphone-based passenger information applications.

Product overview

SKK Corporation is a systems development company that provides custom software development and system operation services. The company offers a portfolio of specialized solutions including station sales management systems for railway companies, railway member site login platforms, SI enterprise operation management systems, and smartphone train congestion apps. The product portfolio centers on ICT services for JR East Information Systems group, with development spanning Windows/Visual Studio environments and operation expertise built on open-source technologies like CentOS, MySQL, and Apache Tomcat.

Differentiator

Problem solved

Functional benefit

Products and services

• Station Sales Management System (駅の販売管理システム)

Quantifiable outcome

• Quality management and continuous improvement practices ensure stable system operations
• +1 more outcomes

Named customers3 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability4 records

Feature7 records

Scale indicators3 records

Recent moves12 records

Expansion highlights5 records

Market position

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights5 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SKK Corporation