Kachaka — Autonomous Mobile Robot App Ecosystem

Flutter, AWS, ROS1/ROS2, TypeScript, Python

Lead engineer for the Kachaka mobile app (iOS/Android), enabling users to control and automate a home robot.

搬送ロボット "カチャカプロ" | 小型で安価なAMRで効率的な搬送自動化

Highlights

• Designed and built the entire Flutter app architecture, migrating from legacy native implementations.
• Implemented task orchestration, scheduling, robot–cloud communication, and real-time state visualization.
• Created the highly praised UI/UX through close collaboration with designers.
• Developed “Ask Kachaka”, an AI-driven conversational interface for robot control (full-stack implementation).

Impact

• Deployed as the main user-facing interface for a commercial autonomous robot.
• Improved reliability and usability across navigation, delivery, and automation flows.

LinkDays — Shared Calendar App

Flutter, Firebase, Cloud Functions, Figma

A personal product built end-to-end to offer simple shared scheduling for families and small groups.

LinkDays - カレンダー共有アプリ

Highlights

• Designed the full UI/UX in Figma and implemented all front-end logic using Flutter.
• Implemented real-time synchronization, multi-user permissions, push notifications, and monetization.