Pessoa Desenvolvedora Frontend React/Angular - Especialista II (Plataforma e Login Único)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Pessoa Desenvolvedora Frontend React/Angular - Especialista II (Plataforma e Login Único) based in Brazil. This is a senior frontend engineering opportunity focused on building and evolving a highly scalable proprietary e-commerce platform. You’ll work on high-performance, responsive interfaces that support multiple brands, products, and digital experiences. The role combines hands-on development with technical leadership, architectural decision-making, and platform modernization. A key focus will be migrating legacy Angular code toward React while establishing modern frontend standards and patterns. You’ll collaborate closely with Product, Engineering, DevOps, Infrastructure, and Marketplace teams in an agile environment. The position offers significant autonomy, with the opportunity to influence technology choices, developer experience, and platform maturity. You’ll also contribute directly to production stability, observability, performance, accessibility, and continuous improvement.