Senior Frontend Engineer (React) — Performance & Scale

amIT Global Solutions Sdn Bhd; Indonesia; On-site; IDR 250,000,000 - 450,000,000; Full time

Job summary

FIT HUB in Jakarta, Indonesia, is hiring a Senior Frontend Engineer to build reliable, scalable web applications with a focus on user-centric experiences. You will shape frontend architecture, improve performance, and collaborate with product, design, and backend teams.

Requirements include 4+ years in frontend development, strong React.js, ES6+ JavaScript and TypeScript, CSS3 mastery, and experience with Next.js, CI/CD, and RESTful APIs. The role emphasizes learning and responsible AI adoption.

Qualifications

• 4+ years in frontend/web app development.
• Proven React.js experience with functional components/hooks/context and Redux-like state management.
• Strong command of ES6+ JavaScript and TypeScript.
• Deep CSS knowledge: CSS3, Flexbox, Grid, responsive design; familiarity with Tailwind CSS, styled-components, or Emotion is a plus.
• Proficient with frontend tooling: Next.js, Webpack, Babel, Vite, etc.
• Experience integrating RESTful APIs and optimizing Lighthouse scores.
• Familiar with CI/CD tools such as GitHub Actions, CircleCI, Jenkins.
• Eager to learn evolving frontend practices and responsible AI adoption.

Responsibilities

• Develop and maintain complex, scalable frontend applications using React for reliable user experiences.
• Collaborate with backend engineers, designers, and product managers to deliver seamless interfaces.
• Maintain high code quality through reviews, tests, documentation, and best practices.
• Drive performance improvements via lazy loading, code splitting, and efficient rendering.
• Explore and adopt frontend technologies including AI-assisted tools to enhance product quality.

Skills

React.js

ES6+ JavaScript

TypeScript

CSS3

Tailwind CSS

Styled-components

Emotion

Next.js

Web performance optimization

RESTful APIs

CI/CD

AI-assisted tools

Code reviews

Job description

FIT HUB in Jakarta, Indonesia, is hiring a Senior Frontend Engineer to build reliable, scalable web applications with a focus on user-centric experiences. You will shape frontend architecture, improve performance, and collaborate with product, design, and backend teams.

Requirements include 4+ years in frontend development, strong React.js, ES6+ JavaScript and TypeScript, CSS3 mastery, and experience with Next.js, CI/CD, and RESTful APIs. The role emphasizes learning and responsible AI adoption.