Staff Machine Learning Engineer

<h3><strong>About Us</strong></h3> <p>Nu is one of the largest digital financial platforms in the world, with more than 122 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and this is still just the beginning of the purple future we're building.</p> <p>Listed on the New York Stock Exchange (NYSE: NU), we combine proprietary technology, data intelligence, and an efficient operating model to deliver financial products that are simple, accessible, and human.</p> <p>Our impact has been recognized by global rankings such as Time 100 Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Bank. Visit our institutional page <a href="https://international.nubank.com.br/careers/">https://international.nubank.com.br/careers/</a>  </p> <h3>About the role</h3> <p>At AI Core, we are scaling the impact of our AI initiatives to become the primary driver of Nubank’s most critical decision systems. We are seeking <strong> Machine Learning Engineers </strong>to lead high-impact research projects that bridge the gap between state-of-the-art AI and production-grade financial systems. You will be responsible for solving complex, ambiguous problems using Deep Learning and Foundation Models, ensuring our architectures are scalable, efficient, and driving measurable business results.</p> <p>As an Machine Learning Engineer (MLE), you’re expected to:</p> <ol> <li>Research Execution & Technical Leadership (Complexity & Autonomy)</li> </ol> <ul> <li><strong>Lead and execute complex applied research initiatives</strong> independently, focusing on building and optimizing architectures (e.g., Transformers, GNNs) that can be d