Modern Application Development
Cloud-native application development with Agile, CI/CD and DevOps.
Overview
i3DESIGN Co., Ltd. is a Tokyo-based AI-driven digital engineering company combining design, AI and engineering under the mission of rebooting Japan’s IT. Established on July 26, 2006 and restarted in 2011 around cloud and smartphone services, it today employs 135 people including business partners, and in October 2026 announced a company name change to Aitria.
Its services span modern application development, AI-driven development support, cloud native development and modernization, generative AI and feature engineering, digital product design, design system construction, prototyping and hypothesis verification, UX/UI improvement, frontend development, and product growth support including PdM/PMM execution. It also develops its own products, including Phennec, flamingo, ELAND and ZEBRA, and established i3DESIGN-UKRAINE, LLC in 2013.
Published case studies name Daiwa Institute of Research, JTB Business Travel Solutions, Aldagram, SBI Remit and SANU, covering AI chat, design systems, remittance app renewal and rapid app conversion projects. The details in this profile come
i3DESIGN Co., Ltd. is a Tokyo-based AI-driven digital engineering company combining design, AI and engineering under the mission of rebooting Japan’s IT. Established on July 26, 2006 and restarted in 2011 around cloud and smartphone services, it today employs 135 people including business partners, and in October 2026 announced a company name change to Aitria.
Its services span modern application development, AI-driven development support, cloud native development and modernization, generative AI and feature engineering, digital product design, design system construction, prototyping and hypothesis verification, UX/UI improvement, frontend development, and product growth support including PdM/PMM execution. It also develops its own products, including Phennec, flamingo, ELAND and ZEBRA, and established i3DESIGN-UKRAINE, LLC in 2013.
Published case studies name Daiwa Institute of Research, JTB Business Travel Solutions, Aldagram, SBI Remit and SANU, covering AI chat, design systems, remittance app renewal and rapid app conversion projects. The details in this profile come from i3DESIGN’s own website and have not been independently verified.
FAQs
Where is i3DESIGN based?
Its corporate profile lists the office at NMF Aoyama 1-chome Building 3F, 8-1-22 Akasaka, Minato-ku, Tokyo 107-0052, Japan.
What services does i3DESIGN provide?
Modern application development, AI-driven development support, cloud native development, modernization, generative AI and feature engineering, digital product design, design system support, prototyping and hypothesis testing, UX/UI improvement, frontend development and product growth support.
When was i3DESIGN founded?
Its corporate profile states it was established on July 26, 2006, with a “second founding” business restart on August 1, 2011. In October 2026 it announced a company name change to Aitria.
Which clients has i3DESIGN worked with?
Published case studies name Daiwa Institute of Research, JTB Business Travel Solutions, Aldagram, SBI Remit and SANU.
How can you contact i3DESIGN?
By phone at +81 3 6419 7700, as listed on its site, which also offers contact and document-download forms.
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Services offered
AI-Driven Development Support
AI-agent-driven development workflows, feature engineering and generative AI adoption.
Modernization
Modernizing legacy systems to modern stacks.
Digital Product Design
Product design from prototyping and hypothesis testing through UX/UI improvement.
Design System Support
Building design systems for reproducibility and scale.
Frontend Development
Frontend engineering as a named service line.
Product Growth Support
PdM/PMM structure execution and new business project support.
Key clients
- Daiwa Institute of Research
- JTB Business Travel Solutions
- Aldagram
- SBI Remit
- SANU
Leader details
Yoichiro Shiba
Representative Director, President and CEO
Office Locations
Headquarters
Tokyo, Japan
NMF Aoyama 1-chome Building 3F, 8-1-22 Akasaka, Minato-ku, Tokyo 107-0052
AI Insights
AppsInsight editorial review. i3DESIGN is a fit for Japanese enterprises pursuing modernization and AI adoption with a design-led engineering partner, particularly where UX quality is as important as the build itself. The case-study roster, Daiwa Institute of Research, JTB, Aldagram, SBI Remit, SANU, shows enterprise-grade Japanese references, and its design-system and AI-driven development practices match current buyer priorities. Operating since 2006 with 135 staff gives it more depth than a boutique, though its work is Japan-centric and Japanese-language, so overseas buyers should confirm English-language delivery. Note the company announced a name change to Aitria in October 2026. We will add a score once verified reviews exist.
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