Yuki Otsubo

Background

About Yuki Otsubo

I am a frontend engineer with 5+ years of experience specializing in React / TypeScript development. I have contributed to a wide range of projects including education support systems, telecommunications infrastructure, Web3/crypto trading platforms, and wearable device interfaces. My core strengths include Modern frontend stack: React, Next.js, TypeScript, GraphQL, Tailwind CSS, Vite, Jest, Storybook UI/UX design: Figma (5 yrs), Sketch Design system development: Led the creation of an internal component library and drove UI standardization Testing & quality assurance: Designed and executed UAT, wrote unit tests, and contributed to QA automation Project coordination (PMO): Managed vendor schedules, handled stakeholder alignment, and wrote operational manuals for large-scale enterprise systems Multilingual & global collaboration: Experienced in working with English-speaking teams (USA-based startups), including Slack communication and product discussions in English I take pride in delivering maintainable, user-centered UI, and in bridging design and engineering to improve product quality and development efficiency. Whether in early-stage startups or enterprise environments, I consistently contribute beyond code—helping teams align, scale, and ship with clarity.