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.