Senior Frontend Engineer

Senior Frontend Engineer (Next.js + TypeScript) Location: Hong Kong Employment Type: Full‑time (Remote) Start Date: ASAP Department: Software Development/Engineering Salary: Based on experience+performance‑based bonuses We are travSIM, a global SIM and eSIM solutions provider. We’re expanding fast and need a Senior Frontend Engineer to deliver a high‑performing e‑commerce website with Stripe integration, built on Next.js and deployed on Vercel. What You’ll Be Doing You will take full ownership of the frontend delivery for a global e‑commerce platform, working closely with backend engineers and product teams. Core Responsibilities Develop, test, and maintain a Next.js + TypeScript e‑commerce frontend (deployed on Vercel). Integrate Stripe payments (PaymentElement, Checkout, ApplePay, GooglePay, 3DS flows). Implement PayloadCMS integration, including live previews, block‑based content, and revalidation triggers. Ensure high performance and SEO (CoreWebVitals, structured data, i18n routing). Build responsive and accessible UI with TailwindCSS, following WCAG 2.1 fundamentals. Implement robust API integration and data caching (SWR/ReactQuery). Handle forms and validation with React Hook Form + Zod/Yup. Write and maintain unit, e2e, and performance tests (Jest/RTL, Playwright, Lighthouse CI). Monitor and improve quality (Sentry, GA4, A/B testing, feature flags). Apply modern security and best practices (XSS/CSRF mitigation, secure headers, secrets management). Required Skills & Experience Strong hands‑on experience with Next.js (AppRouter & RSC) in production. Proficiency in React + TypeScript with modern hooks and state management (4+ years). Experience integrating Stripe frontend payment flows in production. Proven work with PayloadCMS and content‑driven routing (or similar headless CMS). Strong grounding in performance, SEO, and accessibility fundamentals. Experience writing and maintaining unit and e2e tests. Solid understanding of frontend security practices. Nice‑to‑Have (Bonus Skills) Experience deploying and managing apps on Vercel (environments, previews, edge functions). Familiarity with Prisma/Postgres concepts and Redis caching. Experience with large‑scale i18n and localization. Exposure to growth and analytics tools (PostHog, GTM server‑side, affiliate tracking). Knowledge of customer tooling integrations (Crisp/Intercom). Why Join Us Build high‑performance web platforms with direct impact on global travellers. Collaborate with an international team of engineers and product experts. Opportunity to work on cutting‑edge frontend tech (Next.js + TypeScript, Vercel). Competitive compensation, performance incentives, and growth opportunities. Read Before Applying You do not have proven, hands‑on experience with Next.js (AppRouter & RSC) in production. You do not have strong, practical experience with TypeScript on the frontend (4+ years). You have not worked on frontend payment flows using Stripe in production. You cannot demonstrate practical experience with PayloadCMS (or similar headless CMS) in real projects. You have not built mobile‑responsive user interfaces for production. You are not comfortable working in a fast‑paced, collaborative environment. Senior Level Mid‑Senior level Employment Type Full‑time Job Function Engineering and Information Technology Industries Travel Arrangements Screening Questions Required Qualifications: How many years of professional experience do you have working with TypeScript? (4+ years) How many years of professional experience do you have working with React + Next.js? (4+ years) What is the longest continuous period you’ve worked on a single production project using React + Next.js? (12+ months) Do you have experience building mobile‑responsive UIs? (Yes) Preferred (Nice‑to‑Have) Qualifications: How many years of experience do you have deploying projects on Vercel? (1+ year) How many years of experience do you have implementing Stripe payment flows in production? (1+ year) How many years of experience do you have working with PayloadCMS in production projects? (1+ year) #J-18808-Ljbffr