Senior ReactJS Developer

HI5 ELITE PTE. LTD.; Hong Kong; On-site; HKD 420,000 - 860,000; Full time

Job summary

HI5 ELITE PTE. LTD. in Hong Kong seeks a senior frontend engineer to architect and optimize large-scale React applications. You will drive micro frontend strategies, module federation, and monorepo governance across hosts, ensuring performance, consistency, and scalable delivery.

You will apply deep React/TypeScript expertise (ES6+, HTML5, CSS3) and hands-on work with CI/CD, testing (Jest/RTL), and server tuning (Nginx/IIS). Collaboration with backend teams is essential for robust integrations.

Qualifications

• Strong expertise in ReactJS and modern JavaScript (ES6+).
• Deep knowledge of TypeScript, HTML5, and CSS3.
• Extensive experience with React Hooks, Redux, Context API, and state management.
• Hands-on experience with Micro Frontend architecture and Module Federation.
• Experience managing 100+ MFEs, monorepo governance, and shared module configurations.
• Proficiency with CI/CD pipelines (Jenkins, GitHub Actions, AzureDevOps, GitLab CI/CD).
• Strong knowledge of Git, testing with Jest or React Testing Library.

Skills

ReactJS

JavaScript

TypeScript

HTML5

CSS3

React Hooks

Redux

Context API

state management

Micro Frontend

MFE

Webpack

Module Federation

Monorepo

CI/CD

Jenkins

GitHub Actions

Azure DevOps

Git

Jest

React Testing Library

Tools

Webpack

Jenkins

GitHub Actions

AzureDevOps

GitLab CI/CD

Job description

Job Requirements :

• Strong expertise inReactJS, JavaScript (ES6+),TypeScript, HTML5, and CSS3
• Extensive experience withReact Hooks, Redux, Context API, and statemanagement
• Hands-on experience inMicro Frontend (MFE) architecture
• Deep expertise inWebpack Module Federation, including:
• Managing 100+ Micro Frontends
• Monorepo management
• Shared module configuration across MFEs
• Navigation and data sharing between MFEs
• Managing multiple React MFE versions within host applications
• Experience withReact performanceoptimizationanddynamic caching strategies
• Strong experience integratingREST APIsand third-party applications
• Performance tuning of web servers such asNginxandIIS
• Experience withCI/CD pipelines(Jenkins, GitHub Actions, AzureDevOps, GitLab CI/CD)
• Strong knowledge ofGitand version control
• Experience withJest, React Testing Library, or similar testing framework.