Tokyo, Japan
I build and lead engineering organizations that operate at a global scale. Currently, as a Principal Frontend Engineer at Rakuten, I shape the technical strategy for Japan's largest e-commerce marketplace, overseeing systems that handle millions of daily transactions. My career spans across top-tier Silicon Valley companies, including Airbnb and MongoDB, and major global enterprises. I specialize in taking complex product visions—such as AI-driven search discovery and high-volume checkout systems—from zero to production. I recently built a complete frontend organization from the ground up to launch Rakuten 24 Express, establishing the standards, culture, and architecture needed for a high-performing team. My core areas of focus include: - Organizational Leadership: Building engineering teams from scratch, defining culture, and mentoring engineers to deliver exceptional products. - Technical Strategy: Designing highly scalable, AI-first consumer experiences and robust infrastructures that support massive transaction volumes. - Global Perspective: Educated at UC Berkeley and fluent in English, Japanese, Mandarin, and Cantonese, I successfully bridge the gap between diverse markets and cross-functional global teams. Whether I am defining the next generation of e-commerce architecture or growing a new engineering division, my goal is always to drive measurable business growth through strong leadership and excellent design.
Leading frontend architecture for Rakuten Ichiba checkout experiences serving millions of daily transactions on Japan's largest e-commerce marketplace. - Define AI-first technical strategy, engineering standards, and best practices for checkout systems - Drive performance optimization, Core Web Vitals, and scalability initiatives - Lead technical design reviews and architectural decision-making - Mentor entire frontend engineering team on advanced patterns and system design - Architect high-performance Frontend solutions for high-volume transactions
Led Marketplace Expansion, architecting AI-first e-commerce experiences and driving intelligent growth through AI-powered discovery for millions of users. Rakuten 24 Express (FMCG) Launch - Zero to Production: - Built complete frontend infrastructure from zero to production launch - Delivered all Day 1 experiences: My List, direct-cart, search, item pages, checkout flows - Established engineering standards, performance guidelines, and workflows - Led technical decisions for SSR, state management architecture, and design system integration - Integrated AI-driven recommendations and intelligent search experiences - Scaled frontend organization from inception to high-performing team Leadership Impact: - Established and managed entire Frontend Engineering organization from zero - Drove delivery, growth, and engineering excellence across web and mobile - Built team culture, hiring processes, and engineering practices - Collaborated with AI/ML, Product, Design, and Backend leadership
Create a world where anyone can belong anywhere Content Platform, Marketing Technology Experience with Large Scale Frontend Solutions and Technical Leadership
Empower innovators to create, transform, and disrupt industries by unleashing the power of data Global Technical Services, Technical Services Tools, Full Stack Web Development Experience with Large Scale Enterprise Tools
To make every aspect of hearing wellness virtually invisible Full Stack Web Development Experience with E-commerce platforms Experience with HealthCare Software Development
Perficient is a leading technology and management consulting firm serving clients throughout the United States. We are experts in designing, building and delivering business-driven technology solutions. We help our clients gain competitive advantage by using Internet-based technologies to make their businesses more responsive to market opportunities and threats, strengthen relationships with customers, suppliers and partners, improve productivity and reduce information technology costs. Perficient's Business Analytics team provides analytics services to clients who want to gain a competitive edge. Our analytics services help clients make strategic decisions and implement business improvements based on insight which already exists in internal and external data. Our practice areas include: - Cognos TM1 for planning and financial analytics for complete planning, budgeting, analysis and reporting - Driving customer retention - Channel strategy - Supplier financial evaluation