（株）エスアイイー

What （株）エスアイイー does

SIE Co., Ltd. (株式会社エスアイイー, ticker 292A) is a Tokyo-based, vertically integrated IT education and workforce solutions company founded in 2004 by CEO Masayuki To (藤正幸). The company operates seven divisions covering IT solutions/system integration, security assessment, education, instructor/development, media integration, HR solutions, and game integration. Its flagship IT training institution, IT School SAK (システムアーキテクチャナレッジ), has been in continuous operation for over 20 years and reports more than 16,000 cumulative graduates and 350+ corporate clients, with curriculum covering CCNA, LPIC, AWS, Java, and Unity certifications.

SIE monetizes through four primary revenue streams: (1) subscription-based licensing of its proprietary BOOKNS (ブックネス) e-learning platform and BOOKNS FRAME (ブックネスフレーム) enterprise training SaaS, with content including 2,000+ video lessons, 4,000+ practice questions, and ChatGPT-powered AI coaching; (2) professional services via IT staffing/dispatch (SES model), systems integration, and JASA-certified security assessment; (3) tuition and certification fees from IT School SAK campuses in Akihabara/Shinjuku and SAK University Tokyo Innovation Campus (品川・天王洲) — the latter established in September 2025 in partnership with the University of Essex to deliver UK bachelor's and postgraduate degrees in Japanese; and (4) HR solutions through the @PROJIN recruitment platform. The company went public on Tokyo Stock Exchange TOKYO PRO Market on December 19, 2024 with stock code 292A and reported FY2023 net sales of JPY 5.323 billion (~$35M USD).

The company serves large Japanese enterprises (NTT Group, Mizuho Financial Group, Sumitomo Mitsui Banking Corporation, Aozora Bank, Mitsui Sumitomo Insurance, Sompo Japan Insurance, Nippon Life Insurance, Dai-ichi Life Insurance), the Metropolitan Police Department, major IT services firms (TIS, SCSK, NSSOL, ITOCHU Techno-Solutions), and individual IT learners through its proprietary platform ecosystem. GTM is sales-led across six direct sales divisions, supplemented by channel partnerships with Microsoft Solutions Partner, Oracle PartnerNetwork, Salesforce, AWS Partner Network, and LPI Japan (where SIE is the first Platinum Partner in Japan). The company holds Privacy Mark, ISO 27001 ISMS, and JASA information security service registrations, plus White Kigyou Gold certification for three consecutive years.

Name

（株）エスアイイー

Legal name

株式会社エスアイイー

Website

https://ssie.jp

Company type

Public

Founded year

2004

Operating status

Ipo

Headcount range

11–50 employees

Short description

SIE Co., Ltd. (株式会社エスアイイー) is a Tokyo-headquartered IT education and workforce solutions company operating IT School SAK, the BOOKNS/BOOKNS FRAME e-learning platforms, SAK University (University of Essex partnership), IT staffing, and JASA-certified security services for Japanese enterprises, government, and IT learners.

Ownership category

akta.pro rank

Product category

IT Education and Training Services

NAICS

Computer Training (611420), Educational Support Services (611710), Professional and Management Development Training (61143), Business Schools and Computer and Management Training (6114)

SIC

Services-Educational Services (8200), Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Information Technology & Software (EDAAAPAB)

akta.pro secondary industries

Vendor/Authorized Certification Training (Microsoft/AWS/Cisco, etc.) (BPAEANAA), Systems Administration & IT Operations (Windows/Linux, Monitoring, ITSM) (EDABAFAH), Infrastructure, Networking & Systems Administration Training (BPAEANAJ)

Keywords

• IT professional training
• Online learning platform
• Corporate training solutions
• IT staffing services
• System integration

Headquarters

HQ city

千代田区, 東京都

HQ country

Japan

HQ region

Asia

Offices5 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Education Services (IT School SAK / SAK University): Revenue from operating IT School SAK (over 20 years of operation) and SAK University Tokyo Innovation Campus (in partnership with University of Essex), delivering IT education, professional certification training, and university-level programs. Income is generated through tuition, course fees, and certification exam fees, with recurring student enrollments driving predictability.
2. HR Solutions (Staffing & Talent Services): Provides IT staffing, dispatch, and talent solutions services, placing skilled IT professionals with client organizations. Revenue model based on contract staffing fees, placement commissions, and managed service arrangements.
3. Content & Platform Licensing (BOOKNS / BOOKNS FRAME): Revenue from licensing the BOOKNS e-learning platform and BOOKNS FRAME corporate training platform to enterprise clients and educational institutions. Subscription-based or per-seat licensing model.
4. IT Solutions & Systems Integration: Revenue from delivering IT solutions, systems integration, development, and security services to enterprise and government clients through direct sales and partner channels.

Go-to-market motion1 record

Distribution channels5 records

Marketing channels5 records

Core offering

SIE Co., Ltd. operates a multi-platform IT education and services portfolio centered on three core businesses: IT school education, content solutions, and human resource solutions. The company delivers IT certification training (CCNA, LPIC, AWS, Java), operates the BOOKNS subscription e-learning platform with AI coaching, runs SAK University Tokyo Innovation Campus (University of Essex partnership), provides IT staffing and system integration services, and delivers corporate training management via the BOOKNS FRAME platform.

Product overview

SIE Co., Ltd. operates a multi-platform IT education and services portfolio centered on three core businesses: IT school education, content solutions, and human resource solutions. The flagship offerings include IT School SAK (システムアーキテクチュアナレッジ), a 21-year-old in-person and online IT training institution; BOOKNS (ブックネス), a subscription-based online learning platform with 2,000+ videos and AI coaching powered by ChatGPT; and BOOKNS FRAME (ブックネスフレーム), an enterprise DX tool for converting internal documents into e-learning content. The company also operates SAK University Tokyo Innovation Campus (established May 2025), a partnership with the University of Essex enabling Japanese students to earn UK bachelor's and postgraduate degrees in computer science entirely in Japanese. Supporting divisions include IT Solutions (system integration and engineer dispatch), Security Solutions (JASA-certified vulnerability assessment), HR Solutions (@PROJIN recruitment agency), and Media Integration (corporate media production).

Differentiator

Problem solved

Functional benefit

Brands

• BOOKNS: IT/DX人材育成のための定額制オンライン学習サービス。動画本数2,000本以上、総問題数4,000問以上。AIコーチング機能付き。
• BOOKNS FRAME
• IT SCHOOL SAK（システムアーキテクチュアナレッジ）
• SAK University 東京イノベーションキャンパス

Products and services

• SAK University Tokyo Innovation Campus (SAK University 東京イノベーションキャンパス) A higher education institution offering Japanese students a 3-year UK bachelor's degree (Computer Science) and a 4-year postgraduate diploma in Computer Science & Security, delivered entirely in Japanese. Targets high school graduates and working adults seeking global IT credentials.
• IT School SAK (ITスクールSAK / システムアーキテクチャナレッジ) A 21-year-old IT training school operating in Akihabara, Shinjuku, and Taito (Tokyo), offering 30+ courses including CCNA, LPIC, AWS, Java, and Unity with both classroom and online instruction. Served 16,000+ cumulative graduates and 350+ corporate clients.
• BOOKNS (ブックネス) A subscription-based online learning platform for IT/DX talent development, offering 2,000+ video lessons, 4,000+ practice questions across 40+ courses, AI-powered coaching via ChatGPT, a community forum, remote lab access, and admin progress tracking.
• BOOKNS FRAME (ブックネスフレーム) An enterprise internal DX tool that enables organizations to convert documents, manuals, and training materials into e-learning content using AI auto-quiz generation and video creation features, with progress tracking and team/department-level assignment management.
• IT Solutions Division (ITソリューション事業部) Provides system integration, network infrastructure design/build/operation, and IT outsourcing services, operating an SES (system engineering service) model placing engineers at client sites across enterprise and government sectors.
• Security Solutions Division (セキュリティソリューション事業部) Offers JASA-certified vulnerability assessment and penetration testing services for web applications, networks, and infrastructure, along with security engineer dispatch and secure coding training.
• @PROJIN (IT Career Placement Service) An IT-focused recruitment agency providing job placement services for both experienced professionals and those new to the IT industry, connecting IT talent with project opportunities at client companies.
• Instructor/Development Division (講師・開発事業部) Operates as both the instructor team for IT School SAK and an active engineering team performing system design, construction, operation, and commissioned software development for external clients.

Quantifiable outcome

• IT School SAK has been in continuous operation for over 20 years, demonstrating sustained market relevance and educational quality.
• +2 more outcomes

Named customers13 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability5 records

Feature3 records

Partnerships

Eleven partnerships are on record, tiered core, flagship and minor.

• University of Essex (サク・ユニバーシティ)coreStrategic or Co-development PartnerSAK University Tokyo Innovation Campus operates in partnership with the University of Essex, enabling Japanese students to pursue internationally recognized university degrees in IT and technology disciplines. This partnership is central to SIE's education strategy and provides a unique competitive differentiator in the Japanese market.
• LPI JapancoreChannel Partner/ Reseller/ DistributorSIE is the first company in Japan to achieve LPI Japan Platinum Partner status, the highest tier in LPI's partner program. This enables SIE to deliver official LPI certification exams (Linux, open-source, IT fundamentals) and leverage LPI's brand authority in vendor-neutral IT certification.
• NTT Data University (NTTデータ・ユニバーシティ)flagshipStrategic or Co-development PartnerSIE collaborates with NTT Data University on the Olive One platform, NTT's corporate training and人才 development ecosystem. This flagship partnership positions SIE as a preferred training provider within one of Japan's largest IT services companies.
• 日本プロフェッショナルサッカー協会 (JPFA)minorGTM or Marketing PartnerJPFA (Japan Professional Footballers Association) career support partnership, providing IT education and career development services to professional footballers for post-retirement career transitions.
• さがスマートセンター (Saga Smart Center)minorStrategic or Co-development PartnerSIE serves as a supporting company for Saga Smart Center, contributing to regional smart city and IT workforce development initiatives in Saga Prefecture.
• 千葉経済大学 (Chiba University of Economics)minorStrategic or Co-development PartnerBusiness partnership agreement with Chiba University of Economics for collaborative educational programs, student career development, and potentially shared curriculum development in IT and digital skills.
• 英日商事协会 / British Chamber of Commerce in JapanminorGTM or Marketing PartnerSIE is a member of the British Chamber of Commerce in Japan, leveraging connections with UK-based businesses and institutions to support international partnerships and business development.
• Microsoft Japan (Microsoft Solutions Partner)coreTechnology or IntegrationMicrosoft Solutions Partner designation enables SIE to design and deliver Microsoft-based IT solutions (Azure, Microsoft 365, Dynamics 365, Power Platform) to enterprise clients, leveraging co-selling incentives and technical enablement from Microsoft.
• Oracle Japan (Oracle PartnerNetwork)coreTechnology or IntegrationOracle PartnerNetwork membership allows SIE to resell, implement, and provide services around Oracle database, cloud infrastructure, and enterprise applications to Japanese enterprise clients.
• Salesforce Japan (Salesforce Partner)coreTechnology or IntegrationSalesforce partner status enables SIE to implement Salesforce CRM, Service Cloud, and other Salesforce platforms for enterprise customers across Japan.
• Amazon Web Services Japan (AWS Partner)coreTechnology or IntegrationAWS Partner Network membership enables SIE to design, build, and manage AWS-based cloud solutions for enterprise and government clients, leveraging AWS's market-leading cloud infrastructure in Japan.

Scale indicators5 records

Recent moves9 records

Expansion highlights6 records

Broad incumbents

• Coursera: Global online education platform partnering with universities and enterprises to deliver degree programs and certifications, including IT/Computer Science. Comparable to SIE's SAK University Essex partnership and enterprise BOOKNS distribution model, though at global scale.
• Benesse Holdings: Japanese education and publishing conglomerate offering K-12, language, and corporate training services. Comparable to SIE in the domestic Japanese education and corporate training market, though operating at much broader scope and scale.
• Recruit Holdings: Japanese HR/staffing and education conglomerate operating Indeed, HR technology, staffing, and education businesses. Comparable to SIE in HR Solutions (@PROJIN), corporate training distribution, and adjacent education (SAK University) plays, though at vastly greater scale and broader scope.

Direct peers

• Persol Holdings: Japanese staffing and HR services group with strong IT engineer dispatch (SES) and career placement businesses. Directly comparable to SIE's HR Solutions / @PROJIN staffing and engineer-dispatch model, and competes for the same enterprise IT talent clients.
• Pluralsight: Enterprise-focused technology skills platform offering expert-authored IT courses, skill assessments, and AI-driven learning paths. Comparable to BOOKNS FRAME in selling curated IT training into corporate L&D budgets and competing for the same enterprise training wallet share.
• Udemy: Global subscription and marketplace e-learning platform with a deep IT, cloud, and certification catalog (AWS, Cisco, Microsoft). Closely comparable to SIE's BOOKNS e-learning platform in product mechanics, content depth, and target learner segments (individual upskillers and corporate L&D buyers).

Others

• Linux Professional Institute (LPI): Global vendor-neutral Linux and open-source IT certification body. SIE holds the first LPI Japan Platinum Partner status, making LPI a critical certification partner and ecosystem counterpart rather than a direct competitor; relevant for understanding the training ecosystem SIE operates within.

Emerging players

• BizReach: Japanese HR tech platform focused on direct recruiting and mid-career professional placement, with growing education/training initiatives. Comparable to SIE's @PROJIN platform in IT professional career placement and adjacent corporate reskilling offerings.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCXq4bqXz1bZt4WNhR0aLmbQ
• LinkedInlinkedin.com/company/%EF%BC%88%E6%A0%AA%EF%BC%89%E3%82%A8%E3%82%B9%E3%82%A2%E3%82%A4%E3%82%A4%E3%83%BC

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 （株）エスアイイー