Join Stefanini! At Stefanini, we are more than 30,000 brilliant minds, connected from 41 countries, doing what they love and co-creating a better future. **Responsibilities and Duties** Responsibilities: * Develop mobile applications (apps) * Collaborate with designers to translate wireframes and functional prototypes. * Optimize for maximum speed and scalability * Implement and maintain front-end frameworks and libraries. * Stay up-to-date with the latest trends and technologies in mobile front-end development. * Conduct code reviews and provide constructive feedback to team members. * Troubleshoot and debug front-end issues as they arise * Collaborate with back-end developers to integrate front-end components with server-side logic * Proactive and autonomous. **Requirements and Qualifications** Requirements: * Proven experience as a mobile application developer * In-depth knowledge of at least one mobile programming language (Swift, Java/Kotlin). * Familiarity with object-oriented programming principles and development for Android, iOS, and Windows Phone platforms. * React Native * Redux Toolkit + RTK Query * Redux Persist * Jest + Testing Library * Deep Linking * Experience in UI design and componentization * Design system and interface componentization * React Navigation * Proficient in HTML, CSS, JavaScript, and TypeScript. * Familiarity with version control systems (e.g., Git) * Strong understanding of responsive design principles. * Knowledge of SEO principles and best practices. * Integration with REST APIs from the front-end * Excellent communication and problem-solving skills. * Ability to work independently and as part of a team. * Attention to detail and passion for creating visually appealing and user-friendly interfaces Preferred Qualifications: * Experience with UI/UX design. * Knowledge of SASS and SCSS is a plus. * Familiarity with agile development methodologies. * Front-end optimization * Familiarity with SonarQube analysis reports * Knowledge of secure development practices Are you looking for a place where your ideas shine? With over 38 years of experience and a global presence, at Stefanini we transform tomorrow—together. Here, every action matters and every idea can make a difference. Join a team that values innovation, respect, and commitment. If you are a disruptive individual, committed to continuous learning, and innovation is in your DNA, then we’re exactly what you’re looking for. Come and let’s build a better future—together!