What i-systems does

i-systems (株式会社アイシステムズ, Kabushiki Kaisha Ai Shisutemuzu) is a privately held Japanese software development company headquartered in Oita City with a branch office in Fukuoka City, founded in June 1997 (Heisei 9) under President and Representative Director Daisuke Ishikawa (石川大輔). Registered capital is JPY 10 million; the firm has no public listing, parent company, or external investors disclosed in available sources. Firmographic headcount is 11-50 employees.\n\nThe company delivers two core service lines: custom software development (ソフトウェア受託開発, sofutōea jutaku kaihatsu), covering system design, development, operations, maintenance, support, and infrastructure construction; and packaged software development and sales (パッケージソフト開発・販売). Documented development experience spans logistics systems, financial systems, accounting systems, payroll systems, production management, sales inventory systems, customer management systems, payment management systems, septic tank management, and gas station operations. i-systems also resells OA equipment and communication devices as an adjunct offering. The firm holds a Labor Dispatch business registration (派44-300266), a PCA Certified Instruction Partner designation, and a Privacy Mark (Pマーク) certification from JIPDEC for personal data protection.\n\nThe customer base consists of approximately 120 end-user companies concentrated in Fukuoka and Oita prefectures in Kyushu. Named distribution and vendor partners include 株式会社インフォセンス (Infosense), 東芝テック株式会社 (Toshiba Tec), 京セラドキュメントソリューションズ株式会社 (Kyocera Document Solutions), and シャープマーケティングジャパン株式会社 (Sharp Marketing Japan). Revenue derives from custom-development contracts, packaged-software sales, OA and communication-device resale, and engineer labor-dispatch placements.

Name

i-systems

Legal name

株式会社アイシステムズ

Website

https://isystems.jp

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

11–50 employees

Short description

i-systems is a Japanese software development firm headquartered in Oita with a Fukuoka branch, founded in 1997. It builds enterprise systems in logistics, finance, payroll, sales inventory, and customer management, serving approximately 120 clients across Kyushu alongside OA equipment resale.

Ownership category

akta.pro rank

Product category

Enterprise Software Development

NAICS

Custom Computer Programming Services (541511), Computer Systems Design and Related Services (54151)

SIC

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

akta.pro primary industry

Systems Integration & Implementation Services (BPAEAAAB)

akta.pro secondary industry

Application Maintenance & Support (AMS) (BPAEAFAC)

Keywords

• Custom software development
• Package software development
• Enterprise IT services
• OA equipment sales
• Systems integration

Headquarters

HQ city

Oita

HQ country

Japan

HQ region

Asia

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Core offering

i-systems (株式会社アイシステムズ) is a Japanese regional software development firm founded in June 1997, headquartered in Oita City with a branch in Fukuoka. It provides commissioned custom software design and development, package software development and sales, and OA/communication device sales. The company has development experience across logistics, financial, accounting, payroll, production management, sales inventory, customer management, payment management, sewage system management, and gas station systems, serving approximately 120 end-user companies in the Kyushu region.

Product overview

株式会社アイシステムズ operates as a regional software development company offering two core service lines: custom software development (ソフトウェア受託開発) for system design, development, operations, maintenance, and infrastructure construction, and package software development and sales (パッケージソフト開発・販売). The company specializes in enterprise systems across logistics, finance, accounting, payroll, production, sales inventory, customer management, payment processing, sewage system management, and gas station operations. They also provide OA equipment and communication device sales as an add-on service. All offerings are delivered through their dual-location structure in Fukuoka and Oita, Japan, with approximately 120 end-user companies served.

Differentiator

Problem solved

Functional benefit

Products and services

• Custom Software Development Services (ソフトウェア受託開発) Commissioned computer system design, development, operations, maintenance, support, and infrastructure construction services delivered to enterprise clients across the Kyushu region of Japan, covering logistics, finance, accounting, payroll, production, sales inventory, customer management, payment, sewage system, and gas station operations.
• Package Software Development and Sales (パッケージソフト開発・販売) Development and sale of pre-packaged software solutions for business operations across logistics, finance, accounting, payroll, production, sales inventory, customer management, and payment processing domains.
• OA Equipment and Communication Device Sales (OA機器、通信機器の販売) Sales of office automation equipment and communication devices as part of comprehensive IT solutions for end-user companies in the Kyushu region.

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record.

• TIMStrategic or Co-development Partner · 17 February 2026TIM held a 49% stake in the neutral fiber operator I-Systems. TIM confirmed it is acquiring IHS's 51% stake for approximately US$452.6 million, which would give TIM full operational control of the business.
• AllohaStrategic or Co-development Partner · 3 February 2026Alloha was conducting due diligence for I-Systems as part of potential strategic alternatives being evaluated. Reports indicated TIM was considering a potential full divestment of the fiber operation with Alloha involved in the due diligence process.

Recent moves4 records

Expansion highlights2 records

Broad incumbents

• JBCC Holdings: Japan-based SI delivering enterprise system development, infrastructure construction, and IT equipment resale. Overlaps with i-systems' infrastructure build and OA/communications equipment sales lines.
• BIPROGY (formerly Nihon Unisys): Established Japanese SI firm delivering custom enterprise system development across finance, logistics, and manufacturing. Overlaps directly with i-systems' core verticals but operates nationally and globally.
• Transcosmos: Major Japanese IT services and BPO provider with broad systems integration and custom development capabilities. A larger incumbent operating in the same custom software development space, but at national scale with a much wider service portfolio.
• TIS Inc. One of Japan's largest independent IT services groups offering custom software development, systems integration, and maintenance. Comparable business model (受託開発) but at a much larger scale and broader geographic footprint.

Direct peers

• FORVAL Corporation: Small-to-mid Japanese IT services group focused on SME clients, offering custom system development, packaged solutions, and OA hardware resale — directly mirroring i-systems' mix of commissioned development, package sales, and equipment distribution.
• OBC (Ohsho Business Consultants): Mid-sized Japanese developer of accounting, payroll, and ERP packaged software with a strong partner/instruction network — directly analogous to i-systems' PCA partnership and its finance/payroll system domain experience.
• SRA Holdings: Independent Japanese IT services group with a mix of in-house packaged software and custom development work. Comparable productized-plus-bespoke delivery model aimed at enterprise and mid-market clients.
• Ryomo Systems: Mid-sized Japanese SI providing custom enterprise software and packaged solutions to regional clients, including Kyushu. Comparable in scale and in the mix of bespoke commissioned development plus package sales.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance3 records

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 i-systems