I3Design
Tokyo, JP · Founded 2006 · 9 employees on LinkedIn · 2 known investors
i3DESIGN is a digital innovation partner that provides software development and UI/UX design services, including cloud services, mobile app development, and metaverse/xR solutions for enterprise clients. Based in Tokyo, the company serves large Japanese corporations across finance, manufacturing, telecom, and insurance sectors.
Also known as i3DESIGN · アイスリーデザイン · 株式会社i3DESIGN
Founders & leadership
I3Design was founded in 2006 by Yoichiro Shiba.
Investors · 2
Company profile
researched Aug 2026i3DESIGN (アイスリーデザイン) is a Tokyo-based digital engineering company that positions itself around the combination of design, AI and engineering. Its stated approach is to implement modernization and "AI shift" programs for client organizations using AI agents, modern technology stacks, CI/CD, DevOps practices and UX/UI design.
The company organizes its offering into three practice areas. Engineering covers modern application development, AI-driven development support, cloud-native development foundations, modernization and support for building in-house development capability (内製化支援), as well as feature engineering and generative AI work. Design covers digital product design, including design-system construction, prototyping and hypothesis validation, UX/UI improvement and front-end development, with an emphasis on scalable component libraries and consistent brand experience. Consulting covers product growth support, spanning business requirements definition, growth strategy, PdM/PMM enablement and new business creation from initial launch through expansion.
i3DESIGN also develops its own products: Phennec, a context-engineering platform intended to support AI agents; flamingo, a SaaS product for modernizing the UX/UI design of web systems; and ZEBRA, a CRM-style push notification engine with segmented delivery.
Business model
The company sells project-based software development, design and consulting services to corporate clients, alongside its own software products (Phennec, flamingo, ZEBRA).
Traction
Published case studies describe outcomes such as a generative AI chat tool delivered for Daiwa Institute of Research, three UX/UI workshops for JTB Business Travel Solutions, a design system built for Aldagram, an overseas remittance app redesign for SBI Remit that reduced rework effort, converting a web service into an app in two and a half months for SANU, a roughly 10% increase in users for a Career Design Center recruitment app, and digitization of real estate contract workflows for Nakajitsu.
▸Full profile — market position, technology, go-to-market, geography
Market position
The company frames its differentiation around three points: expertise in AI-driven development and cloud services, the ability to meet enterprise security requirements in regulated domains such as finance and healthcare, and the integration of UX/UI design with technology delivery.
Technology
Work spans AI-driven development and AI agents, generative AI and feature engineering, cloud-native platforms and platform engineering, CI/CD and DevOps pipelines, modern front-end stacks, and design systems built on scalable component libraries. The company also states it addresses enterprise security requirements through encryption, layered defenses and incident response for sectors such as financial services and healthcare.
Go-to-market
Client engagement is supported by published case studies, downloadable service and industry materials (such as an AI-UX sprint service deck and a guide to writing app development RFPs), a newsletter, and several owned media channels including the in-Pocket corporate blog, an engineering team Tech Blog and a design team note.
Japanese corporate clients across IT and telecommunications, financial services and real estate, travel and other service industries. Named case-study clients include Daiwa Institute of Research, JTB Business Travel Solutions, Aldagram, SBI Remit, SANU, Career Design Center and real estate firm Nakajitsu.
Geography
Based in Tokyo, Japan, with a client base of Japanese companies.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
▸Research sources · 1
primary sources listed
- I3Designi3design.jp · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does I3Design do?
- Tokyo-based digital engineering firm combining AI-driven development, UX/UI design and cloud-native modernization.
- Who founded I3Design?
- I3Design was founded by Yoichiro Shiba in 2006.
- Who are I3Design's investors?
- I3Design's investors include DG Daiwa Ventures, Mizuho Capital.
- Where is I3Design headquartered?
- I3Design is headquartered in Tokyo, JP.