Work History

Overview

Provided technical support as analyst / external technical advisor for a newly formed IT team. Analyzed issues and improvements toward cloud distribution of core systems. Designed and developed a core-system subset connecting SaaS and core systems. Also developed missing tools and Web APIs. Drove UiPath-based RPA adoption and provided licenses.

Overview

Owned core engine development end-to-end. Built new features including UIAutomation, image matching, and AI Agent. Continued quality improvements based on competitor analysis. Adopted AI-driven and spec-driven development with Kiro.

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Rejoined as tech lead. Owned reviews, technology selection, and Web modernization. Owned a GraphQL API for big-data queries. Worked full-stack including internal admin tools. Supported adoption of AI-assisted development.

Overview

Owned work consistently from requirements through operations design. Also served as web director. Designed and implemented astrology chart calculation alone. Combined accurate chart calculation with persona-based AI report writing.

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Owned the full lifecycle as a single contributor. Implemented customer management and email sending. Supported HTML/PDF/CSV output for estimates and invoices. Integrated with accounting software.

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Built a Web backend that orchestrates RPA on multiple local machines. Accepted commands via Web API and delegated/managed each machine’s RPA. Delivered as part of a business automation agent.

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Built order-management Web APIs / backend designed for UiPath integration. Migrated from cloud to on-prem and owned server setup.

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Built report output and third-party integrations aligned with MHLW standards. Designed Excel-template based layout changes. Designed for regulatory updates and long-term operations.

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Developed a library for real-time person authentication from webcam video. Compared video input and image processing across languages/environments.

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Built factory machine log collection tools and aggregation batches. Owned requirements through operations alone.

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Implementation lead for a new process-mining tool for work logging. Owned Windows client with face auth and the Web backend. Also handled requirements/external design and support for international members.

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Built a batch that generates Excel reports from business-system XML. Designed template-based layout changes.

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Added features and enhancements to the care/medical launcher. Migrated settings from XML to PostgreSQL and strengthened integrations.

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Developed both Windows client and Web. Built shared processing and a custom framework on the client side. Owned the Web as a greenfield effort from architecture and basic design through frontend/backend.

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Built a launcher that starts multiple business systems together. Switched menus/behavior per user via XML definitions. Proposed and built an XML editing app for configuration.

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Owned pen-input detection and UI for a touch-table terminal app. Focused on smooth transitions and quality under hard post-release constraints.

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Owned part of the Android app for the appliance × smartphone SNS.

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Developed an appliance × smartphone SNS as a new product. Owned backend work including TV-embedded apps and data-processing Web APIs.

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Built a TV promo video distribution web service from scratch. Prioritized readability and documentation for client-side maintenance.

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Built TV viewing aggregation web apps and ranking sites from scratch. Owned the full lifecycle including estimation, scheduling, requirements, and maintenance.

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Owned server logic and SOAP Web APIs for electronic trial charts. Also built Ubuntu utilities.

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Led migration from VB6 to .NET. Updated integrations for peripheral device changes. Built data processing for IC card auth and sequencer linkage.

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Handled OCR data parsing/normalization and UI updates. Focused on regression prevention in a large existing codebase.

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Owned backend through UI/design for login, search, and related features. Designed selected pages with a print-magazine look and feel.

Overview

Added features to an existing system. Implemented with careful consistency against legacy source.

Overview

Owned work from detailed design onward. Separated logic and UI with a strong focus on operator usability.

Overview

Handled rear-view camera and UI control modifications and testing. Impact analysis and regression prevention for large-scale changes. Improved the defect ticket tool with Access VBA.