Senior Frontend Engineer

Senior Frontend Engineer — Apex Web Technologies

Seattle, WA | January 2021 – Present

• Architected a reusable component library using React and TypeScript, which reduced frontend development lifecycle time by 28% and was adopted by 6 engineering teams.
• Engineered a client-side data caching layer using TanStack Query, decreasing REST API response latencies by 35% and improving Web Vitals scores by 18 points.
• Overhauled the primary user checkout interface with Next.js, boosting mobile conversion rate by 14% and reducing page load times from 2.8 seconds to 1.4 seconds.
• Spearheaded migration of legacy webpack configurations to Vite, shortening local hot-module replacement times by 82% and cutting production build times by 10 minutes.

Frontend Developer — NovaStream Systems

Bellevue, WA | June 2016 – December 2020

• Developed 15 interactive dashboards using React and Redux Toolkit, which increased daily active user retention by 22% for a customer base of 450,000 monthly users.
• Implemented comprehensive unit and integration testing suites using Jest and React Testing Library, reducing production bug occurrence rates by 38% over 12 months.
• Optimized website asset delivery and image rendering pipelines, boosting Google Lighthouse performance scores from 72 to 94 and decreasing bandwidth costs by 18%.
• Collaborated with 4 product designers to build responsive CSS modules, resolving 120 cross-browser layout inconsistencies and increasing customer satisfaction by 15%.

React, TypeScript, Next.js, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, Redux Toolkit, TanStack Query, GraphQL, Jest, Cypress, Vite, Webpack, Git, CI/CD, Responsive Design, Accessibility (WCAG 2.1)

Open Source UI Component Library

Role: Lead Frontend Developer

Tools: React, TypeScript, Rollup, Storybook

Designed and launched an accessible UI library, reaching 15,000 weekly downloads and improving team front-end feature implementation speed by 35%.

SaaS E-Commerce Frontend Re-architecture

Role: Senior Frontend Architect

Tools: Next.js, Tailwind CSS, GraphQL, Vercel

Architected and migrated the frontend of an e-commerce platform, which reduced customer checkout page response latency by 42% and boosted sales conversion by 12%.

• AWS Certified Developer – Associate (2024)
• Meta Front-End Developer Professional Certificate (2021)
• Certified ScrumMaster (CSM) (2022)

• Languages: English (Native), Mandarin Chinese (Conversational)
• Volunteer Work: Web development mentor for local non-profit youth coding initiatives (2022-present)
• Availability: 2 weeks notice