Required Experience/Qualifications

• 3+ years of experience with JavaScript frontend development

• Strong knowledge of React and Redux • Hands-on experience with Material UI (MUI v5) and Material Design 3

• Experience with RESTful APIs and WebSocket-based interactions

• Familiarity with external charting libraries (e.g., Chart.js, Recharts, etc.) • Good understanding of UI/UX principles and component-based architecture

• Willingness to work with legacy code during a migration period

Nice to have:

• Initiative in introducing testing best practices (e.g., unit/integration tests)

• Experience with performance tuning and accessibility

• Familiarity with UI/UX best practices

• Willingness to learn backend technologies (Go, Gin, Centrifuge) Responsibilities

• Participate in the migration from Material Design 2 to Material Design 3 • Refactor and improve existing UI components and architecture

• Implement new UI features and optimize existing ones

• Collaborate with backend developers to integrate APIs and real-time data

• Gradually phase out legacy UI while building the new frontend from the ground up

• Participate in design discussions and propose improvements

Company Offers

• Fully remote work setup

• Competitive compensation

• 8-hour working day

• 20 days paid vacation + 8 days paid sick leave

• Medical insurance

• Friendly, professional team and long-term project

About the Project: Johnson Controls is an international developer and manufacturer of high quality electronic security systems and components, operating in Ukraine via its subcontractor in Kyiv. You will join during a critical UI modernization phase, contributing directly to the new user experience aligned with modern design standards.

Required skills experience

JavaScript

About Johnson Controls

Johnson Controls is a global leader in smart, sustainable building solutions, security, and fire protection. With over 140 years of innovation, we develop cutting-edge technologies that enhance efficiency, safety, and comfort in buildings worldwide. Our mission is to create a smarter, healthier, and more sustainable future through intelligent automation and advanced energy solutions.