Senior Frontend Dev NextJS/ReactJS/TypeScript/HTML5

We are building an online sports data platform with millions of daily visits and real- time data processing requirements. Our robust backend infrastructure runs on GCP/GKE, while the web frontend is distributed via CDN (Cloudflare) and optimized for speed and performance. We are looking for a Senior Frontend Developer (Next.js) to lead the architecture, optimize user experience, and ensure maximum performance.
Architecture & Optimization

Minimize unnecessary re- renders using memoization and virtualization for large lists.
Build a Next.js architecture optimized for SEO, speed, and scalability.
Leverage Web Workers to handle heavy tasks (data processing, calculations) without affecting the UI.
Implement SSR, ISR, lazy loading, code splitting, and image optimization.

Real- time Data Rendering

Optimize UI rendering of WebSocket/Socket.IO data with high- frequency updates.
Apply batch updates and throttling/debouncing to minimize unnecessary re- renders.
Manage state effectively using Redux Toolkit or Zustand.

End- user Performance Optimization

Compress, preload, and prefetch assets; optimize critical CSS/JS.
Monitor performance with Lighthouse, WebPageTest, Sentry, and LogRocket.
Apply caching strategies (CDN + app- level cache).

Quality & Testing

Conduct code reviews and provide technical guidance for the team.
Write unit, integration, and E2E tests using Jest, Testing Library, Cypress/Playwright.

Yêu cầu công việc

Requirements

Solid understanding of SEO optimization for SSR/ISR.
Experience working with Web Workers for heavy tasks.
Strong knowledge of HTML5, CSS3, SCSS/TailwindCSS.
Experience in optimizing the performance of large- scale web applications.
Experience with CI/CD pipelines, Docker, and Git.
Proficiency in Next.js, React, and TypeScript.
Hands- on experience with real- time data rendering & WebSocket.
Familiarity with CDN (Cloudflare) and caching strategies.

Specific Objectives

After 6 months: Achieve a Lighthouse Performance Score > 90 across all main pages.
Month 3: Optimize real- time data rendering.
Month 2: Finalize the design system & component library.
Month 4: Reduce TTI (Time to Interactive) by 30–50% on high- traffic pages.
Month 1: Audit frontend architecture & performance.

Benefits

A professional, innovative, and growth- driven environment that fosters creativity.
Team building, annual trips, and internal engagement activities.
Opportunities to join advanced training programs domestically and internationally (when available).
Direct collaboration with senior leadership and the dynamic founding team.
Full social insurance and benefits in accordance with regulations.
Competitive compensation package: Attractive base salary + performance- based bonuses (quarterly/yearly).

Working Hours
Working Hours: 8:30 AM – 17:30 PM (Monday – Friday, off on Saturday & Sunday).

Cập nhật gần nhất lúc: 2025-08-28 20:40:03