This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Sr Data Scientist Lead based in Brazil. This is a high-impact technical leadership role for an experienced Data Scientist ready to combine hands-on expertise with strategic influence. You will lead the design, development, and delivery of data science and machine learning solutions that address complex business challenges. The role covers the full data science lifecycle, from problem definition and experimentation through modeling, deployment, monitoring, and optimization. You will work extensively with cloud-based data and machine learning environments, with a particular focus on AWS. Beyond individual technical contributions, you will guide technical decisions, mentor data professionals, and establish effective analytical and engineering practices. Working with international stakeholders, product teams, data engineers, and software engineers, you will help turn data into measurable business value.