This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Tech Lead React Native based in Brazil. We are looking for a highly experienced mobile engineering leader to drive the modernization and evolution of a complex application ecosystem. This role will lead the technical reconstruction of a mobile platform using React Native, establishing scalable architecture, coding standards, and deployment practices. The professional will act as a key bridge between legacy systems, product teams, and new engineering squads, ensuring a smooth and secure transition. You will have the opportunity to influence technical decisions, improve performance, and shape the future of a high-impact digital product. The role requires deep technical expertise, strong leadership abilities, and the ability to balance innovation with business priorities. You will work in a challenging environment where quality, security, scalability, and engineering excellence are essential. ### Accountabilities: The Tech Lead React Native will be responsible for defining the technical direction of the mobile application, guiding engineering practices, and ensuring the successful delivery of a scalable and high-performance platform. The role combines hands-on development, architectural leadership, mentorship, and cross-functional collaboration. - Lead the technical reconstruction of the mobile application using React Native, defining architecture principles, development standards, and implementation strategies. - Design scalable application structures that support multiple teams working efficiently on the same platform through approaches such as modular architecture, monorepos, or feature-based organization. - Establish best practices for code quality, performance optimization, maintainability, and long-term scalability. - Guide the migration from legacy native technologies while ensuring business continuity and minimizing operational risks. - Collaborate with Product, Engineering, and business stakeholders to translate technical decisions into business impact, timelines, and risk assessments. - Support the integration between React Native and native mobile technologies, ensuring compatibility with existing solutions and security requirements. - Implement and improve CI/CD pipelines, automated testing processes, and mobile application release workflows for App Store and Google Play environments. - Provide technical mentorship through code reviews, knowledge sharing, and coaching to elevate the engineering team’s capabilities. - Promote secure mobile development practices, including data protection, authentication mechanisms, and application hardening strategies. - Help establish a culture of engineering excellence, collaboration, and continuous improvement. ## Requirements: The ideal candidate is a senior mobile engineer with strong React Native expertise, experience leading complex technical initiatives, and the ability to communicate effectively with both technical and business audiences. - Deep expertise in React Native, including the latest architecture concepts such as Fabric and TurboModules. - Strong experience with state management solutions such as Zustand, Redux, or Context API, as well as advanced React Native hooks and performance optimization techniques. - Proven experience designing scalable mobile architectures for large applications, including modularization strategies and multi-team development environments. - Solid understanding of native mobile development concepts, including the ability to read and understand Swift/Objective-C (iOS) and Kotlin/Java (Android) code. - Experience creating or integrating bridges between React Native and native modules. - Practical knowledge of mobile security practices, including Keychain/Keystore, SSL Pinning, biometric authentication, code obfuscation, and Root/Jailbreak detection. - Experience building and maintaining CI/CD pipelines using tools such as Fastlane, Bitrise, GitHub Actions, or similar platforms. - Previous experience with mobile application migrations, major refactoring projects, or technology transitions in production environments. - Strong understanding of software architecture, engineering best practices, and production-grade development processes. - Experience working with financial applications, fintech platforms, payment solutions, or regulated environments is a strong advantage. - Excellent communication skills, with the ability to explain complex technical topics in terms of business value, risks, and priorities. - Pragmatic mindset with strong decision-making skills and the ability to balance technical excellence with delivery needs. - Leadership profile with experience mentoring developers and conducting constructive technical reviews. - Ability to collaborate diplomatically with existing teams during technology transitions and organizational changes. ## Benefits: - Fully remote work opportunity. - Opportunity to lead the modernization of a high-impact mobile platform. - Significant technical ownership and influence over architecture decisions. - Work on complex digital products requiring high standards of security, scalability, and performance. - Collaborative environment with opportunities to mentor and grow engineering teams. - Exposure to challenging projects involving innovation, technology transformation, and business-critical applications. - Professional growth opportunities within a technology-focused organization. - Flexible work model designed to support productivity and autonomy. 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