ABOUT | Stone System Corporation

We are more than just a company that builds systems.
With the desire to "help someone through IT," we nurture talented IT professionals and send them out into the world.

IT is evolving rapidly, but its true purpose remains the same: helping people and enriching lives. Guided by our philosophy, "Creating a People-Friendly World Through IT," we strive to build a society where people can work and live without exhaustion. By nurturing engineers with a strong sense of service and hospitality, we aim to bring this vision to the world.

「Creating a People-Friendly World Through IT」

When the founder became familiar with computer software, he strongly felt, "I want to use this to provide convenient and useful things to people." This thought still lives within our company today. However, both hardware and software are evolving beyond imagination, and it is no longer enough to simply provide convenience and usefulness; people now expect more. Even when thinking about the future, it is difficult to specify exactly what will be created. But whatever is created, the founder's hope is that it will contribute to a world that is kind to people.

The word "kind" encompasses both "easy" and "gentle" meanings.
"Easy" refers to simplicity of operation, while "gentle" refers to not causing stress. Moreover, the phrase "a world kind to people" not only refers to the world resulting from the services we provide but also to a world that is kind to us as service providers. In other words, it reflects our desire to create a work environment that is also kind to those developing the services. Additionally, the word "creating" embodies our aspiration to be a guiding force in achieving such a world.

Company Name	Stone System Corporation
Location	〒101-0031 2-4-6 Higashikanda, S-GATE Akihabara 6F, Chiyoda-ku, Tokyo TEL: 03-5820-7337 FAX: 03-5820-7338
Established	February 19, 1990
Capital	10,640,000 JPY
Executive Team	Chairman: Hisahisa Ishiguro President: Motoyasu Matsumaru
Employees	58 (as of January 1, 2025)
Fiscal Year	End of September
Banking Partners	Higashi-Nihon Bank, Kanda Branch Sumitomo Mitsui Banking Corporation, Kanda Branch Mitsubishi UFJ Bank, Takadanobaba Branch
Certifications & Accreditations	ISO/IEC27001（ISMS） General Worker Dispatch Business
Memberships	Japan Crypto Asset Business Association (JCBA) Financial IT Association (FITA)
Business Activities	【Software Development】・Design, development, and requirements definition of web applications ・Requirements definition, design, and development of other smart device applications ・System design, operation, and maintenance related to operations ・Specification discussions and schedule management with clients 【System Consulting】・Proposals for web services and various system consulting ・System Engineering Services (SES) 【Product Development】・Development and maintenance of in-house package software ・Sales, development, and operation of in-house services 【Music Business】・Transcription and arrangement of sheet music ・Localization of music software, creation and sale of music fonts ・Creation of printing plates using computers
Major Clients	【Securities & FX】 Invast Securities Co., Ltd. KOYO Securities Co., Ltd. Phillip Securities Co., Ltd. Hirota Securities Co., Ltd. FINX J Securities Co., Ltd. Money Partners Co., Ltd. Money Partners Solutions Co., Ltd. Asahi Markets Co., Ltd. Golden Way Japan Co., Ltd. SBI Liquidity Market Co., Ltd. 【Crypto Assets】 Tokyo Hash Co., Ltd. Crypto Garage Co., Ltd. SBI R3 Japan Co., Ltd. 【Banks】 Zero Bank Design Factory Co., Ltd. (Minna no Bank) Bank Guard Co., Ltd. 【Financial Vendors】 NTT Data Corporation Internet Initiative Japan Inc. TradeWorks Co., Ltd. MINKABU THE INFOINOID, Inc. Financial Brain Systems Co., Ltd. Simplex Inc. Tecotec Inc. Three A Systems Inc. Cosmedia Inc. ebs Inc. Profit Cube Co., Ltd. SIOS Technology Co., Ltd. 【Music】 Oricon Research Co., Ltd. Yamaha Music Foundation Roland Corporation Zoom Corporation 【Others】 All Nippon Airways Co., Ltd. (ANA) SmartNews Inc. LocationMind Inc. Meiji Tosho Publishing Co., Ltd. Scouter Inc. Sharing Innovations Inc. Ace Cargo Inc. Hitachi Academy Inc. Others (Honorifics omitted, in no particular order)

Stone System Corporation

Head Office
〒101-0031
2-4-6 Higashi-Kanda, S-GATE Akihabara 6F, Chiyoda-ku, Tokyo
TEL：03-5820-7337
FAX：03-5820-7338

Branch Office
〒101-0031
2-1-8 Higashi-Kanda, Akihabara Crossside 2F, Chiyoda-ku, Tokyo

JR Sobu Line, Yamanote Line, Keihin-Tohoku Line "Akihabara Station",
or Tokyo Metro Hibiya Line "Akihabara Station",
7-minute walk from Tsukuba Express "Akihabara Station"
5-minute walk from Toei Shinjuku Line "Iwamotocho Station"