Model Risk Specialist

About Us Nu is one of the largest digital financial platforms in the world, with more than 127 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. 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. 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 Careers at Nu - Join our team! About the Role At Nubank we heavily rely on Data, Machine Learning, and increasingly on Generative and Agentic AI to drive our strategy and deliver the best experience and products to our customers. The Model Risk team plays a crucial role in ensuring the risks associated with our models and AI systems are understood and under control. We are now building a dedicated AI Risk Management capability to address the emerging risks of advanced AI — including LLM-powered and autonomous agentic systems — with a focus on AI quality, model and agent behavior, and the platform controls that keep these systems safe and reliable across internal and customer-facing use cases. This is an individual contributor role, you will both review and assess what first-line teams build, and actively develop tools, playbooks, and analyses to mature our risk practices. You will focus on the infrastructure and data risks that surround model development and deployment: feature engineering and feature stores, MLOps pipelines, model monitoring, deployment platforms, and data governance practices. You will work closely with model and data platform teams to identify, assess, and report risks independently, bringing a second-line perspective without losing technical depth. Responsibilities Infrastructure & Data Risk Assessment Conduct independent reviews of the data and infrastructure environments used for developing, deploying, and monitoring AI/machine learning models, assessing reliability, stability, and fitness for purpose. Evaluate risks across the model lifecycle infrastructure: feature engineering pipelines, feature stores, CI/CD for models, deployment platforms, and model monitoring systems. Assess data governance practices, including data quality, lineage, access controls and identify gaps that could materially impact model behavior or risk. Identify and escalate risks or control gaps proactively across all stages of the model and data platform lifecycle. Controls & Governance Help establish and enhance specific controls and validation practices for data and infrastructure used in model development and deployment. Review and challenge first-line processes, procedures, and controls against internal policies, industry frameworks, and regulatory expectations. Partner with model and data platform teams to define and monitor Key Risk Indicators (KRIs) for infrastructure and data risk. Contribute to the evolution of Nubank's model governance framework with an infrastructure and data lens. T ooling & Playbooks Develop and improve tools, analyses, and playbooks specific to infrastructure and data risk management. Build reporting and monitoring solutions that provide clear, continuous visibility into the health of model infrastructure and data environments. Support internal audit and regulatory inquiries with well-documented, traceable, and reproducible risk assessments. Stakeholder Engagement Discuss and report infrastructure and data risk status, findings, and independent opinions with stakeholders across the organization, including senior managers. Collaborate with model teams, data platform engineers, and governance partners to drive risk-aware design decisions without slowing responsible innovation. Work in a mu