Positively impacting billions of lives is our purpose—and it can be yours too! Founded in 2010 in Brazil, Semantix is a reference in Big Data, Analytics, and Artificial Intelligence. We are a team of innovation enthusiasts from diverse backgrounds and with varying levels of experience. What unites us is our shared motivation to transform our clients’ experiences through a data-driven culture. If this resonates with you, Semantix is your place. We’re excited to welcome you to our team. After all, the future is built together. Requirements: * Develop and maintain mobile applications using React Native (iOS and Android). * Implement responsive and accessible interfaces based on UI/UX prototypes. * Integrate REST/GraphQL APIs and third-party services. * Write testable, reusable, and well-documented code. * Identify and fix bugs and performance bottlenecks. * Participate in code reviews and definition of technical standards. * Contribute to continuous improvement of processes and architecture. **Mandatory Requirements:** * Solid mid-level experience as a React Native Developer. * Proficiency in JavaScript/TypeScript and the React ecosystem. * Knowledge of the mobile app lifecycle (publishing, app stores, versioning). * Experience consuming REST APIs and managing application state (Redux, Context API or similar). * Hands-on experience with testing (unit and/or integration) in mobile applications. * **Proficiency in English for technical meetings and discussions is essential.** * Prior experience working in Agile teams (Scrum, Kanban or similar). **Nice-to-Have:** * Experience with CI/CD for mobile (Fastlane, App Center, Bitrise or similar). * Knowledge of native iOS/Android capabilities (bridges, native modules). * Experience building high-scale, high-performance digital products. * Participation in communities, open-source projects, or public portfolio. Benefits Competitive salary; Caju (flexible card) loaded with R$ 1\.060/month; Bradesco Health Plan; Bradesco Dental Plan; * ️ Preventive medicine with Dr. Alper; Life Insurance; * ️ Gympass; ️ SESC; Daycare Assistance for mothers and fathers; Profit Sharing Program (PLR); Learning – an area focused on developing hard and soft skills; Partnerships with educational institutions for technical training, MBAs, postgraduate studies, certifications, English, and Spanish; Career Development Plan; Discounts on products from a partner portal. We emphasize that all our job openings are open to people of all profiles and backgrounds, valuing diversity and fostering an inclusive and welcoming environment for everyone.