ISIS

What ISIS does

ISIS Corporation (アイシス株式会社) is a privately held Japanese IT services firm founded in 1983 and incorporated in September 1988, headquartered in Asao-ku, Kawasaki City, Kanagawa Prefecture. The company operates two primary service lines: System Support, which provides authorized implementation, training, and ongoing support for third-party business software packages (accounting, payroll, personnel management, sales/purchase management, and customer management) under certified partnerships with nine major Japanese software vendors (Yayoi, OBC, PCA, Sorimachi, Lets, Union Soft, Chronos, Pacific System, Intercom); and System Development, which delivers custom business application development, embedded software (including automotive test drive control systems for Ono Sokki), and system operations and maintenance for enterprise clients in insurance, leasing, manufacturing (Fujitsu General HVAC, printer manufacturers), and IT services (Intec).

The company's underlying technology stack spans Java, C programming, Excel VBA, and network/virtualization infrastructure, with domain expertise in custom business application development from functional design through integrated testing. Revenue is generated primarily through professional services fees: per-project implementation and customization quotes for software support, project-based custom development with recurring maintenance contracts for system development, and statutory-disclosed worker dispatch rates (average 36,058 JPY per 8-hour day at a 37% margin rate for Sep 2024 – Aug 2025) for IT professional dispatch under permit 派14-301098. The customer base spans three distinct segments: distributed Japanese SMBs served through manufacturer referral networks, a concentrated set of enterprise clients for custom development and maintenance, and government/regional work with Kawasaki City.

The go-to-market is dual-channel: direct on-site engagement with SMB clients (instructor visits for software implementation and training) supplemented by the manufacturer partner referral network that drives a significant portion of new SMB customer acquisition. The company also operates a regulated worker dispatch business providing IT professionals to client firms. ISIS closed its Shin-Yurigaoka PC Classroom consumer training segment in June 2023 after approximately 30 years, focusing on enterprise system development and authorized software support. Leadership transitioned in November 2020, with Takaki Saya (髙木紗綾香) succeeding founder-era Yukui Hiroko (雪井洋子) as Representative Director.

Name

ISIS

Legal name

アイシス株式会社

Website

https://isis.co.jp

Company type

Private

Founded year

1983

Operating status

Operating

Headcount range

11–50 employees

Short description

ISIS Corporation is a Japanese IT services firm providing authorized business software implementation, training, custom software development, and worker dispatch services to Japanese SMBs and enterprise clients across insurance, leasing, and manufacturing.

Ownership category

akta.pro rank

Product category

IT Services and Business Software Support

NAICS

Computer Systems Design Services (541512), Computer Systems Design and Related Services (54151), Custom Computer Programming Services (541511), Other Computer Related Services (541519), Computer Facilities Management Services (541513), Computer Training (611420)

SIC

Services-Computer Integrated Systems Design (7373), Services-Computer Programming Services (7371), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Systems Integration & Implementation Services (BPAEAAAB)

Keywords

• Business software support
• Custom software development
• Software implementation services
• Embedded software development
• IT worker dispatch

Headquarters

HQ city

Kawasaki

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Business Software Implementation and Support Services: ISIS provides implementation, training, and ongoing support services for third-party business software packages (accounting, payroll, sales management, customer management). Revenue is generated through service fees for installation, configuration, user training, and technical support contracts.
2. Custom Software Development: ISIS develops custom business applications, embedded software, and performs system operations and maintenance for enterprise clients. Development projects are scoped and delivered on a project basis, with ongoing maintenance contracts providing recurring revenue.
3. Worker Dispatch Services: ISIS operates a dispatch worker business (派14-301098), providing IT professionals to client companies. Revenue is generated through billing rates charged to client companies for dispatched workers, with a reported margin rate of 37% (most recent period 2024-2025). Average dispatch rate is 36,058 yen per 8-hour day.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

ISIS provides two principal services. System Support delivers authorized implementation, instructor-led training, and ongoing support for Japanese business software packages (accounting, payroll, sales, inventory, customer management) from vendors including Yayoi, OBC, PCA, Sorimachi, Lets, Union Soft, Chronos, Pacific System, and Intercom. System Development provides custom business application development, embedded/firmware software, and system operations and maintenance for enterprise clients in insurance, leasing, manufacturing, and HVAC sectors.

Product overview

ISIS is an IT services company (not a software product vendor) offering two primary service lines: System Support and System Development. System Support provides authorized implementation, training, and ongoing support for third-party business software packages (accounting, payroll, sales, and inventory management) across multiple vendor ecosystems including Yayoij, Obutsukon, PCA, Sorimachi, Lets, Union Soft, Chronos, Pacific System, and Intercom. System Development provides custom software development, embedded/firmware development, and system operations and maintenance for clients in insurance, leasing, manufacturing, and platform development sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• System Support (システムサポート) Authorized implementation, on-site training, and ongoing technical support for business software from Japanese vendors including Yayoi, OBC, PCA, Sorimachi, Lets, Union Soft, Chronos, Pacific System, and Intercom. Targets Japanese SMEs needing accounting, payroll, sales, and customer management software.
• System Development (システム開発) Custom business application development, embedded/firmware software development (including automotive and measurement instrument systems), and ongoing system operations and maintenance. Serves enterprise clients in insurance, leasing, manufacturing, office equipment, and HVAC sectors.
• Worker Dispatch Services (労働者派遣事業) General labor dispatch business dispatching IT professionals to client companies in Japan. Provides training in business manners, leadership, mental health, and information security. Most recent disclosure shows 12 dispatched workers across 4 client companies.

Named customers12 records

Segments3 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Yayoi Corporation (弥生株式会社)coreChannel Partner/ Reseller/ DistributorISIS is a Yayoi Education Partner (弥生教育パートナー - Yayoi visiting instruction company) and Yayoi Sales Partner. ISIS provides implementation, training, and support services for Yayoi accounting and business management software to end customers.
• OBC (Obic Business Consultants) / 株式会社オービックビジネスコンサルタントcoreChannel Partner/ Reseller/ DistributorISIS holds OAP Certified status and provides implementation and support for OBC's Buguku (奉行) series enterprise business management software.
• PCA Corporation (ピー・シー・エー株式会社)coreChannel Partner/ Reseller/ DistributorISIS is a PCA Certified Instruction Partner and provides PCA accounting and business software implementation and training services.
• Sorimachi Corporation (ソリマチ株式会社)coreChannel Partner/ Reseller/ DistributorISIS holds Sorimachi Brand Master certification and provides Sorimachi-Oh (ソリマチ王) series business management software implementation and support.
• Lets Corporation (株式会社レッツ)minorChannel Partner/ Reseller/ DistributorISIS is an authorized dealer and certified instructor for Lets' Goplus cost management software.
• Union Soft Corporation (ユニオンソフト株式会社)minorChannel Partner/ Reseller/ DistributorISIS is a certified instruction partner for Union Soft's Tegata no Tatsujin (手形の達人) and Electronic Claim products.
• Chronos Corporation (クロノス株式会社)minorChannel Partner/ Reseller/ DistributorISIS is an Expert Certified Partner for Chronos products including Crossion and Teletime.
• Pacific System Corporation (パシフックシステム株式会社)minorChannel Partner/ Reseller/ DistributorISIS is a Pacific System Authorized Dealer providing PSD labor and social insurance software support.
• Intercom Corporation (株式会社インターカム)minorChannel Partner/ Reseller/ DistributorISIS is a Web KinkyuChou (Web給金帳) V3 Technical Partner providing payroll software support.

Scale indicators4 records

Recent moves6 records

Expansion highlights3 records

Broad incumbents

• CSK Corporation (now SCSK Corporation): Large Japanese systems integrator offering business software implementation, consulting, and managed services. While much larger, it competes for the same pool of Japanese enterprise business software deployment and custom development work that ISIS serves.
• BIPROGY Inc. (formerly Nihon Unisys): Major Japanese IT services and systems integration provider. Comparable in the business software implementation and enterprise systems integration market, though operating at far larger scale across insurance, manufacturing, and government verticals.
• DTS Corporation: Japanese IT services company offering custom software development, embedded systems, and system operations across manufacturing, finance, and distribution. Overlaps directly with ISIS's embedded software and system operations work.
• NRI (Nomura Research Institute): One of Japan's largest consulting and IT solutions providers, with deep financial services and insurance vertical expertise. Overlaps with ISIS's insurance and leasing-sector custom development practice.
• Future Corporation: Tokyo-based IT consulting and systems integration firm serving financial institutions and enterprises. Comparable in custom system development and IT consulting services for Japanese enterprise clients.

Direct peers

• Quest Co., Ltd. Japanese IT services company offering custom software development, system operations, and IT consulting for enterprise clients. Comparable in business model and customer base to ISIS's enterprise development practice.
• PCS Co., Ltd. Japanese IT services firm focused on business software implementation, support, and custom development for SMBs. Comparable to ISIS in size, geographic focus (domestic Japan), and reliance on third-party vendor channel partnerships.
• Mamezou Holdings: Japanese IT services firm providing system development, embedded software, and software support across manufacturing and enterprise clients. Comparable in scope of services to ISIS's embedded software and system operations practice.

Others

• Yayoi Corporation: Leading Japanese accounting/payroll software vendor and a direct business partner of ISIS. Included as a channel partner/ecosystem reference rather than a direct competitor — its product roadmap and partner economics directly affect ISIS's pipeline.
• OBC (Obic Business Consultants): Major Japanese business management software vendor and strategic partner of ISIS. Acts as a channel partner feeding implementation work to ISIS; relevant for ecosystem risk assessment.

Market position

Strengths3 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 ISIS