What Sept does

Sept Inc. (株式会社セプト) is a Tokyo-based IT services company founded in December 1990 that provides enterprise systems development, network construction, and software maintenance to large corporate clients. It operates under the Quest Group umbrella and is led since April 2025 by Representative Director and President Yamauchi Toyoshi (山内豊志). The company maintains ISO/IEC 27001 certification obtained in June 2014 and reports 106 employees as of April 2026, with operations concentrated in the Tokyo metropolitan area.

The company's core offerings are organized around two delivery models: resident development (常駐開発), a System Engineering Service (SES) that stations Sept engineers onsite at client premises, and contract development (請負開発), an outsource development model executed in-house. Additional services include systems and network operations and maintenance (運用保守), plus an internal IT education division (教育事業) that trains new graduates and career changers on Java, databases, web frameworks, networks, and Linux servers, with preparation for LinuC and CCNA certifications. Underlying technology is Java-centric, with database systems, web frameworks, and Linux server infrastructure.

Revenue is generated through professional services billed on a customized, per-project basis (no public pricing available). The go-to-market is enterprise field sales with a published list of 15 major clients across telecommunications, financial services, manufacturing, retail, travel, and government sectors. Distribution is domestic-only via direct sales, with no channel partner or reseller model. The company has signaled intent to expand into IoT, AI, RPA, and cloud computing, though no proprietary AI products, patents, or research output are disclosed.

Name

Sept

Legal name

株式会社セプト

Website

https://septjp.co.jp

Company type

Private

Founded year

1990

Operating status

Operating

Headcount range

51–100 employees

Short description

Sept Inc. is a Tokyo-based Japanese IT services company providing bespoke enterprise systems development, network operations, and maintenance through resident and contract delivery models to large corporate clients in telecommunications, financial services, manufacturing, retail, travel, and government since 1990.

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

Revenue model

1. Systems Development Services: Core business providing enterprise systems development including both resident development (onsite client engagement) and contract development (in-house with client delivery). Services span from consulting and planning through design, development, maintenance, and operations.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels2 records

Core offering

Sept Inc. provides bespoke enterprise systems development, network construction, and software maintenance services. Its core offerings include Resident Development (常駐開発), where engineers are stationed at client sites, and Contract Development (請負開発), where projects are completed in-house and delivered to clients. Services span consulting, planning, design, development, maintenance, operations, and evaluation across telecommunications, financial services, manufacturing, retail, travel, and government sectors.

Product overview

Sept Inc. (株式会社セプト) is an IT services company offering a comprehensive portfolio of system development and engineering services. The core offerings include bespoke system development for telecommunications, financial services, and other industries; resident development services where engineers work on-site at clients; contract development services handled in-house; and system/network operations and maintenance. The company also operates an IT education division that provides technical training programs for programmers and infrastructure engineers, including certification preparation. The portfolio is structured as service-oriented offerings rather than packaged software products, with education services supporting talent development for the company and potentially clients.

Differentiator

Problem solved

Functional benefit

Products and services

• Resident Development Services (常駐開発) System Engineering Service (SES) where Sept engineers are stationed at client sites to perform enterprise system development and maintenance tasks. Targeted at large enterprise clients needing embedded engineering support.
• Contract Development Services (請負開発) Outsource Development model where the company takes on contracted system development projects and performs design, development, and maintenance in-house for delivery to clients. Targeted at large enterprises seeking full project outsourcing.
• System and Network Operations & Maintenance (システム・ネットワーク運用保守) Ongoing post-deployment operations, maintenance, and support services for enterprise systems and networks. Targeted at existing enterprise clients requiring continuous infrastructure upkeep.
• IT Education and Training Services (教育事業) IT technical training programs for new graduates and career changers covering programming languages (Java), databases, web frameworks, networks, and Linux server implementation, including certification preparation for LinuC and CCNA. Targeted at aspiring system engineers and infrastructure engineers.

Named customers15 records

Segments6 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.

• Quest Group (クエストグループ)coreOthersSept operates under policies established by Quest Group. The company is part of the Quest Group corporate structure, participating in their internal reporting and compliance systems.

Scale indicators4 records

Recent moves8 records

Expansion highlights4 records

Broad incumbents

• NTT Data Group: Largest IT services company in Japan, providing enterprise systems development, consulting, and infrastructure to financial institutions, telecom carriers, and government. A dominant incumbent whose telecommunications and financial-vertical practices most directly overlap with Sept's two core verticals.
• Internet Initiative Japan (IIJ): Japanese IT services and network solutions provider covering systems integration, managed services, and network operations for enterprise clients. Overlaps with Sept's systems/network operations and maintenance offerings in telecommunications-adjacent customers.
• SCSK Corporation: One of Japan's largest IT services companies, part of the Sumitomo Corporation Group, providing end-to-end system development, operations, and BPO to financial, telecom, and manufacturing clients. A scaled incumbent that competes for the same enterprise IT engagements Sept targets.
• BIPROGY Inc. (formerly Nihon Unisys): Established Japanese IT services company focused on financial services and public sector systems development. Long-tenured relationships with banks and insurance firms make it a direct competitor for the same financial-services development and maintenance contracts Sept serves.
• NRI (Nomura Research Institute): Premier Japanese IT consulting and solutions provider serving financial services, asset management, and industrial sectors with consulting-led system development. A larger incumbent competing for the same enterprise financial-systems engagements as Sept.
• TIS Inc. Major Japanese IT services group offering consulting, system development, and outsourcing across financial services, industrial, and public sectors. Operates at significantly larger scale than Sept but competes in the same enterprise system development space.

Direct peers

• Future Corporation: Japanese IT consulting and system integrator focused on financial services, manufacturing, and distribution. Comparable in offering mix (consulting, planning, design, development, maintenance) and in financial-services domain depth similar to Sept's positioning.
• System Information Corporation: Mid-sized Japanese IT services firm providing SES-style resident engineering and contract-based system development to enterprise clients. Closely matched business model and scale to Sept, serving similar financial and telecom verticals.
• INTEC Inc. (TKC Group): Mid-sized Japanese IT services and systems integrator serving financial services, manufacturing, and public sector with custom development and maintenance offerings. Comparable in size, vertical mix, and customer profile (also named in Sept's customer list).
• Systena Corporation: Japanese IT services firm offering system development, SES (resident development), and outsourced contract development to enterprise clients. Closely comparable to Sept's resident/contract hybrid model and named among Sept's select customers, indicating overlapping client/vendor positioning in the same market.

Market position

Strengths1 record

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Instagraminstagram.com/sept1990_photo

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 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 Sept