Frontend Engineering

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

Responsibilities

About us: FIT HUB is a venture-backed technology driven health and wellness startup based in Jakarta, Indonesia. Founded in 2020, FIT HUB's mission is to democratize access to Health and Wellness for all Indonesians. We believe that everyone should have access to improving their health and wellness, so we've built FIT HUB from the ground up to make exercising friendly, affordable, and fun for new gym-goers and fitness-enthusiasts alike. The Opportunity: We are looking for a Senior Frontend Engineer to join our Technologies Team. You will play a key role in building reliable, scalable, and user-centric web applications. Working closely with product, design, and backend teams, you will help shape our frontend architecture, improve application performance, and raise engineering standards across the team.

What You Will Do

• Develop and Maintain Frontend Applications: Build and maintain complex, scalable web applications using React, with a focus on reliable and high-quality user experiences.
• Collaborate with Cross-Functional Teams: Work closely with backend engineers, designers, and product managers to deliver seamless user experiences.
• Improve Code Quality: Maintain high coding standards through thorough code reviews, automated tests, documentation, and engineering best practices.
• Drive Performance Optimization: Improve application performance through techniques such as lazy loading, code splitting, efficient rendering, and effective state management.
• Explore and Adopt Relevant Technology: Continuously evaluate relevant frontend technologies and development tools—including AI-assisted tools—and adopt them responsibly when they improve product quality, team productivity, or engineering practices.

Requirements

What We Need

• Experience: At least 4 years of experience in frontend or web application development.
• React Expertise: Proven experience with React.js, including functional components, Hooks, Context API, and state-management approaches such as Redux or similar libraries.
• JavaScript and TypeScript: Strong command of modern ES6+ JavaScript and TypeScript.
• CSS Mastery: Deep knowledge of CSS3, Flexbox, Grid, responsive design, animations, and preprocessors such as Sass or Less. Experience with Tailwind CSS, styled-components, Emotion, or similar styling solutions is a plus.
• Frontend Tooling: Hands-on experience with modern frontend tooling and frameworks, such as Next.js, Webpack, Babel, Vite, or similar.
• API Integration: Strong ability to integrate and work with RESTful APIs. Performance Optimization: Experience implementing code splitting, lazy loading, rendering optimizations, and improving Lighthouse scores.
• CI/CD Familiarity: Knowledge of CI/CD tools such as GitHub Actions, CircleCI, Jenkins, or similar.
• Continuous Learning and Responsible AI Adoption: Demonstrate curiosity and willingness to learn evolving frontend practices and adopt relevant technologies—including AI-assisted development tools—while maintaining code quality, security, reliability, and ownership of the final output.