Key Achievements

• Japan Expansion 0→1 Leadership: Joined from the early stage of subsidiary establishment, led a small 3-person team (Lead/FE/Design) to build and operate 5 core products (User App, User Web, Admin, Doctor Web, Pharmacy Web)
• Successful Business Pivot: Pivoted from domestic insurance-covered telemedicine app (ドクターナウ) to non-insurance medical tourism web service (BeautyNow, MEDIMODI), achieving $100K+ monthly revenue within 8 months of launch
• Multi-Brand Architecture: Designed multi-brand/multi-tenancy structure to operate Doctornow JP (domestic) and BeautyNow, MEDIMODI (tourists) with complete isolation on a single codebase
• Maximized Productivity with Claude Code: Built 40+ page (50K lines) admin system solo in parallel with backend development
• AI Agent Platform: Developed Spring AI-based system where operators can configure AI Agents with No-Code and users can select purpose-specific Agents. Implemented RAG connecting health magazine content as tools, currently operating 9 Agents
• 83% Infrastructure Cost Reduction: Achieved $2,000 → $337/month through architecture optimization (Modular Monolith, infrastructure removal and reduction)
• DX Improvement: Reduced build time from 60s → 20s by adopting latest tech stack (Kotlin 2.x, Spring Boot 3.x, Kotlin JDSL)

Detailed Execution Timeline

~ 2024.07: Initial Launch

• Provided complete experience from online video consultation to medication delivery (quick/courier) for both insurance and non-insurance treatments
• Integrated Sendbird for video calls, Wolt Drive/Uber Direct/SAGAWA for medication delivery

~ 2024.12: App Service Enhancement

• Developed point system, friend referral system, pharmacy pickup feature
• Developed calendar-based reservation system

~ 2025.03: User Web Launch & BeautyNow Launch

• Developed “BeautyNow” service targeting non-insurance cosmetic medications
• Developed in-hospital prescription feature, medication product management system

~ 2025.07: Web Service Enhancement

• Developed “Health Magazine” content platform for SEO
• Developed web admin (40+ pages)
• Developed coupon system, e-commerce system, promotion system
• Introduced Spring Security

~ 2025.12: Korean Customer Support & System Modernization

• Multi-host architecture (MEDIMODI & Doctornow)
• Built i18n system
• Google Meet integration
• Achieved $100K+ monthly revenue by year-end thanks to Korean customers’ Mounjaro purchasing tourism boom starting July

~ 2026.01: AI Agent Platform Development

• Developed Spring AI-based AI Agent platform
• Built admin system for operators to configure AI Agents with No-Code
• Implemented RAG connecting health magazine content as tools (pg-vector + Text Embedding)
• Currently operating 9 Agents (Health Q&A, Diet Consultation, Supplement Consultation, etc.)