IIS

What IIS does

IIS (株式会社アイ・アイ・エス, Kabushiki Kaisha Ai-Ai-Esu) is a Tokyo-based private Japanese IT services company founded in April 2006 with registered capital of ¥10 million and 71 total employees. Its primary business is the dispatch (haken) of IT professionals — programmers and IT system operations managers — to client companies across the financial, telecommunications, and healthcare verticals, generating revenue from the margin between average dispatch fees (¥28,016/day, 8-hour basis) and average worker wages (¥20,203/day, 8-hour basis), yielding a disclosed dispatch margin of 16.79% as of March 2025 across 38 dispatched workers at 14 client accounts. Named clients include NTT Communications, NTT East Japan Telecom, Intec, TIS Solution Link, NSD, Hitachi Hytec System21, CTC System Management, and Hibikiyu Computer Systems.

The company also provides custom software development services in Java, C#, .NET, C-based languages, and COBOL, alongside infrastructure and network construction services supporting Unix (AIX, HP), Linux, and Windows environments. Its only disclosed proprietary software product is Denbun, a group webmail/email collaboration system with multilingual support (English, Japanese, Chinese) operated internally.

Operationally, IIS focuses on the Kanto/Tokyo metropolitan area, markets itself through major Japanese recruitment portals (Rikunavi, Mynavi) to attract fresh graduates and mid-career IT staff, and runs in-house研修 (training) programs to develop entry-level engineers. The company is led by Representative Director and CEO 室井康弘 (Muroi Yasuhiro), holds a Privacy Mark certification renewed in July 2023, and is registered with the Tokyo Scholarship Support program. No external equity funding, M&A activity, or AI/ML capability disclosures are present in the source material.

Name

IIS

Legal name

株式会社アイ・アイ・エス（ＩＩＳ）

Website

https://iis06.com/

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

51–100 employees

Short description

IIS is a Tokyo-based private Japanese IT services firm (founded 2006, 71 employees) that dispatches programmers and system engineers to ~14 enterprise clients in financial, telecom, and healthcare verticals, and offers custom software development and infrastructure services.

Ownership category

akta.pro rank

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. IT Staffing/Dispatch Services: Dispatch of IT professionals (programmers, IT system operation managers) to client companies, generating revenue through margin between dispatch fees and worker compensation.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

IIS provides IT staff dispatch services and custom software development for manufacturers and major system integrators, covering financial, telecommunications, and medical/healthcare sectors using Java, C#, .NET, C, and COBOL. The company also delivers infrastructure and network construction services from internal LAN to global network security across Unix, Linux, and Windows environments, and operates Denbun, its proprietary group webmail/email collaboration product.

Product overview

IIS (株式会社アイ・アイ・エス) offers a portfolio of IT services centered around its Denbun webmail product and software development/infrastructure services. Denbun serves as the company's primary software product for group email and collaboration. In addition to the Denbun product, IIS provides custom software development services across multiple programming languages (Java, C#, .NET, C, COBOL) for financial, telecommunications, and medical sectors, as well as infrastructure and network construction services supporting Unix, Linux, and Windows environments.

Differentiator

Problem solved

Functional benefit

Products and services

• Denbun Denbun is IIS's proprietary group email (WebMail) system that provides email management, address book, calendar, and settings functionality for organizational collaboration. It supports multiple languages including English, Japanese, and Chinese.
• Custom Software Development Services Custom software development services for manufacturers and major SI companies, covering Java, C#, .NET, C-based languages, and COBOL across financial, telecommunications, and medical/healthcare industry sectors.
• Infrastructure and Network Construction Services Network infrastructure services ranging from internal LAN to global network and security implementations, supporting Unix (AIX, HP), Linux, and Windows operating system environments.
• IT Staffing/Dispatch Services Dispatch of IT professionals (programmers, IT system operation managers) to client companies, generating revenue through the margin between dispatch fees and worker compensation. Average daily dispatch fee of ¥28,016 and average daily worker wage of ¥20,203 produce a 16.79% margin rate.

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• 日本総開発株式会社minorOthersRelated company (関連会社) of IIS, indicating an affiliate/corporate relationship

Scale indicators6 records

Recent moves4 records

Expansion highlights3 records

Broad incumbents

• TechnoPro Holdings: One of Japan's largest IT engineer dispatch and contracting firms, with thousands of engineers placed across financial, telecom, and manufacturing clients — directly comparable business model (IT staffing/dispatch) to IIS, but at vastly larger scale.
• Meitec Corporation: Japan's leading "haken" (dispatch) engineering staffing specialist focused on design, development, and IT engineers, primarily serving manufacturers and SIs — same dispatch/contracting business model and end-customers as IIS, with a national footprint.
• Persol Holdings (formerly Tempstaff): Major Japanese staffing group with a dedicated IT/technology dispatch arm (Persol Technology Staff), serving enterprise IT departments across Japan — overlaps directly with IIS's IT staffing/dispatch offering and target customers.

Direct peers

• WDB Holdings: Mid-cap Japanese staffing firm operating dispatch and temporary staffing services, including IT and technical placements — same dispatch business model as IIS but with broader scientific/specialty staffing exposure.
• Computer Science Co. (subsidiary of TIS): Japanese IT engineer dispatch and contracting company, now part of TIS Inc., that places IT personnel with system integrators and enterprises — directly comparable IT staffing/dispatch model and overlapping customer base.
• Beisia Tech Co. Specialized IT engineer dispatch and contract company serving Tokyo-based enterprises and SIs — operates in the same niche Japanese IT staffing segment as IIS, including COBOL/mainframe maintenance work.
• Global Engineering Co. Japanese IT and engineering dispatch firm focused on placing engineers at manufacturers and SIs — closely comparable IT dispatch business model with similar end-customer profile to IIS.
• Will Group (Will Engineering): Japanese staffing group with a dedicated IT/engineering dispatch subsidiary serving SI and enterprise clients — same haken/dispatch model and Tokyo-centric customer base as IIS.

Regional players

• Information Services International-Dentsu (ISID): Major Japanese SI and IT services firm that both consumes IT dispatch labor and competes for similar financial/manufacturing system integration projects — comparable as both a customer archetype and adjacent services competitor to IIS.
• CTC (ITOCHU Techno-Solutions): Large Japanese system integrator and IT services company, already a disclosed IIS customer (via CTC System Management) — comparable as a major SI buyer of IT dispatch labor and adjacent competitor for financial/telecom systems work.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 IIS