What ARK SYSTEM does

ARK SYSTEM Co., Ltd. (株式会社アークシステム) is a Tokyo-headquartered independent Japanese systems integrator founded on August 22, 1986, by Representative Director Norio Oshikata (押方紀夫). The company delivers full-lifecycle systems development, integration, and operation services spanning requirements definition through release, maintenance, and infrastructure monitoring. Its service portfolio addresses eight vertical domains: manufacturing (including IoT, digital twin, image recognition, and predictive maintenance), government/public sector digitalization, financial services (blockchain, cloud, AI, big data), insurance and securities, telecommunications, service industry applications, social gaming, and self-developed packaged products (procurement, accounting, e-commerce, digital signage, hardware).

The underlying technology stack spans Java, C#, PHP, Python, PL/SQL, VBA, Shell, C#/.NET, CodeIgniter, and Smarty across Windows, Linux, and Solaris environments, with Oracle, DB2, MySQL, and memcached database layers. Cloud-native development leverages AWS and Firebase for the gaming practice, while security and privacy postures are formalized through ISO/IEC 27001 certification, Privacy Mark accreditation, and a worker dispatch business license. A proprietary AI engine supports social game character behavior, and digital twin and IoT capabilities are deployed in manufacturing engagements.

Revenue is generated entirely through project-based professional services billing (with managed infrastructure operations as a secondary stream) contracted directly with enterprise clients and major Japanese SIers such as NTT Data, IBM Japan, Toshiba, SoftBank, Suntory, CyberAgent, Cognizant Japan, and various government ministries. The company operates exclusively in the Kanto/Tokyo metropolitan region with project assignments extending to Kanagawa, Saitama, and Chiba prefectures, and accepts projects without industry or domain restriction, assigning engineers based on individual preference. Financial figures (revenue, headcount, profit) are not publicly disclosed; the company remains privately held under founder leadership with a registered capital of ¥10M.

Name

ARK SYSTEM

Legal name

株式会社アークシステム (ARK SYSTEM CO.,LTD.)

Website

https://ark-system.co.jp

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

51–100 employees

Short description

ARK SYSTEM is a Tokyo-based independent Japanese systems integrator, founded 1986, providing full-lifecycle software development and infrastructure services across manufacturing, government, finance, telecom, and gaming verticals for major enterprise clients and government agencies.

Ownership category

akta.pro rank

Product category

IT Services and Systems Integration

NAICS

Computer Systems Design and Related Services (54151), Computer Systems Design Services (541512), Computer Systems Design and Related Services (5415)

SIC

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

akta.pro primary industry

ERP Implementation & Systems Integration Services (BPAEAGAA)

Keywords

• Systems integration services
• Custom software development
• Enterprise IT consulting
• Infrastructure operations management
• Government systems development

Headquarters

HQ city

Akasaka

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. Systems Integration and Development Services: Project-based professional services revenue from designing, developing, and maintaining custom software systems and applications. Services span the full project lifecycle from requirements definition through system testing, implementation, and ongoing maintenance. The company accepts diverse projects across multiple industries and handles all project phases, providing end-to-end systems integration services to enterprise clients and government agencies.
2. Infrastructure Construction and Operation: Network infrastructure construction, server and network monitoring, system operations, and technical support services including help desk and障害一次対応 (first-response incident handling).

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

ARK SYSTEM is an independent Japanese systems integrator that provides full-lifecycle systems design, development, integration, infrastructure construction, and operation services to private enterprises and government agencies. Its portfolio spans industry-specific solutions across manufacturing, government, finance, insurance/securities, telecommunications, services, and social gaming, complemented by self-developed products such as procurement systems, accounting software, e-commerce sites, digital signage, and hardware. The company uses Agile, DevOps, and DevSecOps methodologies to deliver projects from requirements definition through release and maintenance.

Product overview

ARK SYSTEM is an independent systems integrator (独立系SIer) offering comprehensive system development and operation services. The company's portfolio consists of industry-specific system solutions and proprietary-developed products. Core offerings span eight business domains: Manufacturing (with IoT, digital twin, image recognition, and data analysis), Government digitalization, Financial systems (blockchain, AI, big data), Insurance/Securities, Communications infrastructure, Service industry solutions, and Social game development. These are complemented by self-developed products including procurement systems, accounting software, e-commerce sites, digital signage, and hardware. Services range from consulting and development through design, infrastructure construction, operation, and maintenance—covering the entire system lifecycle.

Differentiator

Problem solved

Functional benefit

Products and services

• Systems Integration and Development Services Project-based professional services covering design, development, and maintenance of custom software systems and applications across all project phases. Serves enterprise clients and government agencies with prime contract engagements from major Japanese SIers and end-user companies.
• Infrastructure Construction and Operation Services Network infrastructure construction, server and network monitoring, system operations, technical support, and help desk services including first-response incident handling. Delivered as managed services to enterprise and government clients.
• Manufacturing Systems Development Systems development for manufacturing industries including automotive, electronics, and machinery sectors. Incorporates IoT, digital twin, image recognition, and data analysis technologies to optimize production planning, quality control, and predictive maintenance. Targets manufacturing enterprises seeking automation, labor savings, and cost reduction.
• Government Systems Development Digitalization solutions for national and local government administrative services. Provides high-quality system design, development, and operation with emphasis on information flow efficiency and security. Serves public agencies requiring stable public service delivery.
• Financial Systems Development Financial industry systems leveraging blockchain, cloud computing, AI, and big data technologies. Enables efficient financial transactions, enhanced security, and creation of new financial services for banks, lenders, and financial intermediaries.
• Insurance and Securities Systems Development Insurance and securities industry solutions supporting digital transformation amid accelerating digitalization. Features advanced security measures for protecting critical personal and asset information. Targets insurers and securities firms requiring high-security systems.
• Communications Infrastructure Solutions Network infrastructure solutions utilizing cutting-edge technologies. Combines advanced data processing with security measures to enable high-speed, stable communications and real-time information delivery via IoT and 5G. Targets telecommunications companies.
• Service Industry Systems Development Systems for the service industry using AI, big data, and IoT for customer behavior and preference analysis. Delivers personalized services and recommendations, incorporating AR/VR experiences and Agile/DevOps/DevSecOps development methodologies.
• Social Game Development Development of card game-style social games featuring proprietary AI engines for controlling AI character behavior and achieving high-quality graphics and animation. Uses Firebase and AWS cloud services for stable server environments. Targets social gaming companies and publishers.
• Self-Developed Products (Procurement, Accounting, EC, Digital Signage, Hardware) Self-developed proprietary products designed and developed by the company's internal development team to meet customer needs. Includes procurement/purchasing systems, accounting software, e-commerce site solutions, digital signage solutions, and hardware creation services.

Named customers16 records

Segments7 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eleven partnerships are on record, tiered major, core and supporting.

• 日本アイ・ビー・エム株式会社 (IBM Japan)majorStrategic or Co-development PartnerLong-term strategic partnership for systems integration and development projects. IBM Japan is listed as a major client and primary transaction partner, providing enterprise-level project opportunities across various industries.
• 株式会社NTTデータ (NTT Data)majorStrategic or Co-development PartnerPrimary strategic partner providing direct business opportunities as a major Japanese systems integrator. NTT Data group companies including NTT Dataアイ and NTT Data SMS are listed as major clients, representing significant project volume.
• 株式会社東芝 (Toshiba)majorStrategic or Co-development PartnerLong-standing partnership for systems integration projects with Toshiba Corporation group companies.
• 株式会社サイバーエージェント (CyberAgent)coreStrategic or Co-development PartnerPartnership for web services and social game development, including technology collaboration for card game-style social games.
• コグニザントジャパン株式会社 (Cognizant Japan)coreStrategic or Co-development PartnerStrategic partnership with global IT services firm Cognizant for Japanese market project collaboration.
• Amazon Web Services (AWS)supportingTechnology or IntegrationCloud platform utilized for social game development, providing stable server environment and database infrastructure.
• Firebase (Google)supportingTechnology or IntegrationCloud service platform used for social game development, providing server environment and database capabilities.
• サントリー株式会社 (Suntory)majorStrategic or Co-development PartnerMajor corporate client for systems integration and development services.
• さくら情報システム株式会社coreStrategic or Co-development PartnerPartnership for financial systems and systems integration projects.
• 株式会社DTScoreStrategic or Co-development PartnerLong-standing partnership for systems integration and development projects.
• キヤノンITソリューションズ株式会社 (Canon IT Solutions)supportingStrategic or Co-development PartnerPartnership for IT solutions development and integration services.

Scale indicators4 records

Recent moves5 records

Expansion highlights5 records

Broad incumbents

• NTT Data: NTT Data is Japan's largest SIer with end-to-end systems integration across all verticals. As ARK SYSTEM's largest strategic partner and source of prime subcontracts, it defines the upper-bound scale of the addressable market.
• Nomura Research Institute (NRI): NRI is a leading Japanese consulting and IT solutions provider with deep finance-sector systems integration work; listed as a major ARK SYSTEM client, illustrating direct commercial overlap in vertical expertise.
• SCSK Corporation: SCSK is one of Japan's largest independent SIers serving finance, manufacturing, and telecom with end-to-end systems integration, comparable to ARK SYSTEM in business model but substantially larger and broader in scope.
• TIS Inc. TIS is a major Japanese IT services group offering systems integration, outsourcing, and consulting across finance, manufacturing, and public sector — overlapping with ARK SYSTEM's service lines but at much larger scale.

Direct peers

• Net One Systems: Net One Systems is a Japanese network infrastructure and systems integrator serving enterprise and government clients, comparable to ARK SYSTEM's infrastructure construction and telecom operations services.
• Future Corporation: Future Corporation is an independent Japanese IT consulting and systems integrator with strong finance and manufacturing verticals, comparable to ARK SYSTEM in being a mid-size, multi-vertical independent SIer.
• BIPROGY (formerly UNISYS Japan): BIPROGY is a Japanese SIer delivering enterprise IT services and systems integration to financial institutions, manufacturers, and public sector clients — directly comparable to ARK SYSTEM's cross-vertical SI business model.
• Works Applications: Works Applications is a Japanese enterprise software and cloud ERP provider serving large enterprises; comparable to ARK SYSTEM in offering proprietary enterprise systems (accounting, procurement) alongside integration services.
• OBC (Osaka Business Computer): OBC is a Japanese ERP/accounting software and services firm targeting SMEs and enterprises — overlapping with ARK SYSTEM's accounting and ERP-adjacent systems integration offerings.
• DTS Corporation: DTS is a Japanese independent SIer providing enterprise systems integration and software development across finance, manufacturing, and telecom. Listed as both a client and partner of ARK SYSTEM, they are a near-twin in business model and scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/arksystem1986

Compliance3 records

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 ARK SYSTEM