What Nihon System House does

Nihon System House (日本システムハウス株式会社) is a privately held Japanese IT services firm founded in August 1977, headquartered in Tokyo (Shibaura, Minato-ku, since July 2025) with a regional branch in Hitachi, Ibaraki Prefecture. The company delivers four integrated service lines: custom software development (web, open-source, and embedded/control systems from requirements definition through delivery), network design and construction, server design and construction with ongoing maintenance, and database services built primarily on Oracle and SQL Server with AWS cloud platform implementations. Its customer base is concentrated in Japanese insurance carriers and government/municipal agencies, with commissioned projects delivered on a project basis across Tokyo, Kanagawa, Chiba, and Ibaraki.

Revenue is generated through bespoke, quote-based professional services engagements and managed infrastructure support; there are no disclosed recurring SaaS or productized offerings at material scale. The firm differentiates through a non-traditional talent model in which approximately 80% of technical staff were hired from non-IT backgrounds and trained internally, supported by dedicated per-employee account managers and a three-axis performance evaluation system. The company holds ISO 14001 (2003), Privacy Mark (2010), and Security Action Two-Star (2021) certifications, and is led by President Miyakita Seiji following a 2014 leadership transition from founder Kuwahara Masuo.

The go-to-market is sales-led and direct: the firm acquires clients through direct business development, responds to commissioned project requests, and serves enterprise and government clients through dedicated project teams deployed at client sites. Distribution is domestic-only across the Kanto region. Recent strategic actions include the 2025 Tokyo headquarters relocation, AWS-native product development (Vehicle Location Information Management System), and adoption of the OutSystems low-code platform, signaling a measured upmarket and cloud-capability expansion.

Name

Nihon System House

Legal name

日本システムハウス株式会社 (Nihon System House Corporation)

Website

https://systemhouse-co.com

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

101–250 employees

Short description

Nihon System House is a privately held Japanese IT services firm, founded in 1977 and now headquartered in Tokyo, providing custom software development, network, server, and database infrastructure services to enterprise clients and government agencies primarily across the Kanto region.

Ownership category

akta.pro rank

Product category

IT Services

NAICS

Computer Systems Design Services (541512), Computer Facilities Management Services (541513), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

SIC

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

akta.pro primary industry

Managed DevOps / Platform Operations (Run & Operate) (BPAEAKAO)

akta.pro secondary industry

Cloud, DevOps & Infrastructure Staffing (BPACADAD)

Keywords

• Custom software development
• Network infrastructure services
• Server construction services
• Database design services
• IT outsourcing services

Headquarters

HQ city

Hitachi

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Custom Software Development: Bespoke software development services from requirements definition through design, development, testing, and delivery. Covers web, open, and control systems development for enterprise clients.
2. Infrastructure Services: Network, server, and database infrastructure design, construction, and maintenance/operations services including cloud migration and system monitoring.
3. Technical Support Services: Field services and outsourcing services including technical support, troubleshooting, and system operations.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Nihon System House is a Japanese IT services company providing four integrated service lines: custom Software Development (web, open-source, and embedded/control systems from requirements through testing and delivery), Network Construction (design, build, verification, and maintenance for enterprise and government clients), Server Construction (design, build, backup, monitoring, and incident response), and Database Services (Oracle including RAC, SQL Server design and ongoing support). Services are delivered as commissioned projects to corporate and public-sector buyers primarily across the Kanto region.

Product overview

Nihon System House is an IT services company offering a unified portfolio of four integrated service lines: Software Development, Network Construction, Server Construction, and Database Services. Software Development covers web-based, open-source, and embedded/control systems from requirements definition through delivery. The Infrastructure services encompass network design and construction, server design and maintenance, and database design with technical support. Together, these services provide comprehensive IT solutions from custom software development to infrastructure design, construction, and ongoing maintenance and support.

Differentiator

Problem solved

Functional benefit

Products and services

• Software Development (ソフトウェア開発) Custom software development covering web-based, open-source, and embedded/control systems, providing end-to-end services from requirements definition and basic design through detailed design, manufacturing, testing, and delivery for enterprise clients across insurance and government sectors.
• Network Construction (ネットワーク構築) Network system design, construction, and maintenance services providing network systems tailored to customer requirements and scale, including core and external connection networks, verification environments, configuration documentation, and design changes for data-center relocation projects.
• Server Construction (サーバー構築) Server design, construction, and system maintenance services including power management, regular backups, updates, operator services, and incident response, covering on-premises and cloud (Windows/RHEL/ESXi) environments for enterprise and municipal clients.
• Database Services (データベース実装) Database design, construction, product specification guidance, usage instructions, and technical support services tailored to customer objectives and scale, including Oracle Database RAC environment setup, installation, database creation, backup configuration, and troubleshooting support.

Quantifiable outcome

• Over 40 years of accumulated track record with diverse clients including insurance companies and government agencies
• +1 more outcomes

Named customers4 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

Feature5 records

Scale indicators5 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• NSW Inc. NSW (formerly Nihon System Ware) is a Japanese IT services firm of comparable size and scope, offering embedded/control software, system integration, and infrastructure services to enterprise clients—closely mirroring Nihon System House's integrated software + infrastructure model.
• ITFOR Inc. ITFOR is a mid-sized Japanese IT services company providing system integration, infrastructure design/construction, and managed services to enterprise clients—directly comparable in scale and service mix to Nihon System House.
• DTS Corporation: DTS is a Japanese IT services firm of similar size focused on embedded systems, enterprise software, and infrastructure services—comparable to Nihon System House in both service portfolio (software + systems) and target customer base.

Broad incumbents

• BIPROGY (formerly Nihon Unisys): BIPROGY is a much larger Japanese IT services incumbent with a similar heritage of mainframe-era system integration, now offering cloud, enterprise applications, and infrastructure services to enterprise and government—overlaps Nihon System House's core verticals at greater scale.
• NS Solutions: NS Solutions is a Japanese system integrator providing custom software, infrastructure, and managed services to enterprise clients including manufacturing and finance—comparable service portfolio to Nihon System House but at substantially larger scale.
• TIS Inc. TIS is a major Japanese IT services company offering system integration, software development, and outsourcing across multiple industries—directly comparable business model to Nihon System House but at enterprise scale with national delivery.
• Information Services International-Dentsu (ISID): ISID is a Japanese IT services firm providing system integration, custom software, and infrastructure services to enterprise clients—overlapping Nihon System House's service portfolio and enterprise/government customer base, though at significantly larger scale.
• Internet Initiative Japan (IIJ): IIJ is a Japanese network and cloud infrastructure services provider—comparable to Nihon System House's network construction and server infrastructure service lines, though IIJ is far larger and more productized.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 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 Nihon System House