Developed a RAG (Retrieval-Augmented Generation) system to enable semantic search and AI-powered Q&A over internal documents.

Built and integrated vector search pipelines using Azure AI Search, and exposed them via a FastAPI backend with a Next.js frontend.

Implemented AI agent workflows using Mastra to automate multi-step tasks and orchestrate LLM-based decision making.

I was in charge of the frontend and backend development for a "Building Recruitment Information Input Assistance" application.

Developed an intuitive UI and user-friendly features to allow users to efficiently input basic building information.

Implemented input validation and verification features to enhance UX.

We developed the "Hotel Room Cleaning Management SaaS" application.

Designed and implemented database models and APIs to fulfill the requirements of new features and services.

Enhanced application performance through query optimization, caching implementation, load testing, and tuning.

Addressed user-reported bugs by fixing issues, adding tests, and creating automated test suites.

I worked as a system engineer in Tokyo-based venture company.

I specialized in creating systems for the architecture industry and customizing CAD software.