About the role
Project for international client from the heating, ventilation, and air conditioning (HVAC) technology industry. The project involves the development of a cross-platform mobile application (iOS + Android) using React Native for end users, which integrates with the company’s IoT devices.
Location: Readiness to work in a hybrid work model (once a week at the client's office in Katowice).
Our expectations
- Minimum 4 years of experience in React Native and 5+ years in general frontend development (JavaScript/TypeScript, HTML, CSS).
- Strong knowledge of React Native, including best practices for developing cross-platform mobile applications (iOS + Android).
- Experience in integrating mobile applications with IoT devices, including:
- reading device parameters (temperature, operating modes, energy consumption, historical data),
- controlling the device from within the app (schedules, on/off, operating mode settings),
- data synchronization with a cloud backend, handling push notifications.
- Ability to work with backends, microservices, and IoT platforms, including implementation of business logic and network communication.
- Experience with multi-brand and multi-language applications, scalable across different markets.
- Knowledge of mobile and integration testing, test automation, and CI/CD processes (e.g., Bitrise, GitHub Actions, Fastlane).
- Familiarity with tools for monitoring and debugging mobile applications.
- Ability to ensure application and communication security, including user authentication, data encryption, and protection of communication channels between the app, device, and cloud.
- Application performance optimization, including startup time, bundle size, responsiveness, offline mode handling, and connectivity issue management.
- Fluent English (B2).
Nice to have
- Proficiency in TypeScript, Redux / MobX, React Navigation, and GraphQL.
- Experience working with highly scalable applications and integrating them with cloud platforms.
- Knowledge of UX/UI principles in the context of mobile applications.
- Experience in migrating existing applications to React Native or modernizing the technology stack.
- Understanding of mobile and IoT application security standards.
Main responsibilities
- Design, development, and maintenance of mobile applications using React Native for iOS and Android platforms.
- Implementation of new features and optimization of existing solutions in terms of performance, security, and scalability.
- Integration of mobile applications with IoT devices.
- Participation in projects focused on developing multi-brand and multi-language applications for various markets.
- Creation and maintenance of unit and integration tests, as well as automation of deployment processes in a CI/CD environment.
- Monitoring, analysis, and debugging of application performance using appropriate tools.
- Ensuring a high level of application security – user authentication, data encryption, and protection of communication channels.
- Optimization of application performance regarding startup time, bundle size, responsiveness, offline mode support, and connectivity handling.
