Senior Frontend Engineer - Build Scalable, User-First Web Apps

FIT HUB; Jakarta Pusat; On-site; IDR 300,000,000 - 500,000,000; Full time

Job summary

FIT HUB is seeking a Senior Frontend Engineer in Jakarta to build scalable web apps using React and modern frontend tools. You will collaborate with Product, Design, and Backend teams to deliver user-focused experiences across our website, lead generation platforms, and internal systems.

The ideal candidate has 5+ years in frontend engineering, strong state management and performance optimization skills, and experience with Next.js or similar frameworks.

Qualifications

• 5+ years of frontend engineering or web application development.
• Solid understanding of modern frontend development practices, including state management, responsive design, and performance optimization.
• Experience with modern frontend frameworks and tools such as Next.js, Vite, Webpack, or similar technologies.
• Strong experience integrating APIs and collaborating closely with backend teams.
• Familiarity with building reusable components, design systems, or scalable frontend architectures.
• Experience troubleshooting and resolving production issues in a fast-paced environment.
• Comfortable participating in technical discussions, reviewing code, and mentoring other engineers.
• Passion for continuous learning and staying up to date with emerging technologies, including AI-powered development tools.

Responsibilities

• Develop and maintain scalable web applications using React and modern frontend technologies.
• Collaborate with Product Managers, Designers, and Backend Engineers to deliver seamless user experiences.
• Build high-quality, reliable, and performant products that serve thousands of users.
• Improve application performance, responsiveness, and overall user experience.
• Contribute to frontend architecture and technical decision-making to ensure scalable and maintainable solutions.
• Review code, share best practices, and mentor fellow engineers to maintain high engineering standards.
• Continuously explore and adopt new technologies and tools that improve product quality and team productivity.

Skills

React

Frontend dev

State management

Perf optimization

API integration

Mentoring

Tools

Next.js

Vite

Webpack

Job description

FIT HUB is seeking a Senior Frontend Engineer in Jakarta to build scalable web apps using React and modern frontend tools. You will collaborate with Product, Design, and Backend teams to deliver user-focused experiences across our website, lead generation platforms, and internal systems.

The ideal candidate has 5+ years in frontend engineering, strong state management and performance optimization skills, and experience with Next.js or similar frameworks.