Service — Development
System Development
Custom development of web systems, business systems, apps, and AI / automation — from requirements to operation, end to end.
About
We buildall of it.
"Our system is aging," "we've hit the limits of Excel," "no one in-house can build it" — you can hand the whole thing to us from exactly that point.
DnD Inc.'s custom development covers web systems, business systems, smartphone apps, AI, and automation. Even when requirements aren't fixed yet, we stay with you from organizing the work through design, development, and operation. We bring generative AI into the build process to deliver quality at a shorter timeline and a fair price.
Common challenges
- Aging systems
- An old business system can't be maintained, and upgrades stall.
- Limits of Excel
- You run ledgers and reports in Excel, but you've hit the ceiling.
- Lack of dev resources
- No one in-house can build systems — or not enough people.
- SaaS isn't enough
- Off-the-shelf SaaS doesn't fit your operations.
What we build
- Business systems
- Web and business systems: reservations, inventory, CRM, core-system integration, and more.
- Web & apps
- From corporate sites to web apps (e.g. matching platforms) and smartphone apps (iOS / Android).
- AI & automation
- Generative-AI use, transcription, RAG, and workflow automation.
Process
Requirements
We hear your operations and goals and define what to build. Unfixed requirements are fine.
Design
We design a necessary-and-sufficient architecture and stack, with future growth in mind.
Development
We ship small and verify as we go. Generative AI helps us balance quality and speed.
Operation & maintenance
We don't stop at delivery. We stay with you through improvement.
Team
Activeengineers.
An active engineer working at a company listed on the Tokyo Stock Exchange Prime Market is on the team.
We prioritize design, code quality, and maintainability, and take responsibility from requirements through operation. By bringing generative AI into the build process, we balance speed and quality and deliver development at a fair price.
Pricing
Scoped toyour project.
We quote individually based on the scope and scale of the work.
Consultation and estimates are free. We start by hearing your operations and goals, then propose the right architecture and a ballpark figure. We can also start small and grow it in stages.
FAQ