Senior Software Engineer - Full Stack

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer - Full Stack based in Brazil. This role offers the opportunity to take a leading part in designing, developing, and evolving cloud-based applications and services at scale. You will work across the full stack, contributing to APIs, backend services, databases, and user-facing applications that support complex data and activation workflows. The position combines hands-on engineering with system design, technical decision-making, operational excellence, and continuous improvement. You will collaborate closely with product, architecture, and engineering teams to build secure, scalable, and reliable solutions. You will also contribute to production support, integrations, troubleshooting, and the evolution of existing platforms. As a senior engineer, you will have opportunities to share knowledge, mentor colleagues, and help shape effective technical solutions.