Model Risk Senior Specialist

At Nubank, we rely heavily on data, machine learning, and other quantitative models & techniques to drive our strategy and deliver the best experience and products to our customers. The position holder will be part of the Model Risk team within Nubank's Risk Management structure.

Responsibilities

Conduct independent reviews of quantitative models based on statistical and machine learning techniques, identifying and validating models' uses, hypotheses, data, methodologies and compliance with regulatory requirements; Provide effective challenges, identify risks and enhancement opportunities, engaging with stakeholders to strengthen our decision-making tools; Propose and monitor KPIs to explain how model performance impacts Nubank's business; Discuss and report model risk status and independent opinions with different stakeholders, including senior managers and regulators; Follow up on how models are applied and used in the business, understanding their practical impact on decisions and contributing to feedback loops; Develop playbooks and toolkits (Python, Scala, AI Agents, etc.) to optimize model reviews, ongoing model monitoring, and assess the impact of models on decisions; Be exposed to different types of decisions and processes (e.g. credit, fraud, operations) and different countries; Contribute to keeping Nubank's model risk governance and standards continuously updated, incorporating new techniques and new model applications as they emerge; Work in a multicultural, diverse and highly skilled environment

Requirements

Experience with development and/or validation of quantitative and/or machine learning models, specifically applied to the credit cycle, fraud prevention or related decision-making processes; Data Science skills, with knowledge of machine learning tools and techniques; Strong programming skills; Proactive, autonomous and able to learn fast, with strong analytical and problem-solving skills, motivated by challenges; Organized and detail-oriented, without losing track of the big picture; Excellent communication and interpersonal skills, able to discuss complex topics with both technical and non-technical stakeholders; English language proficiency; Challenge business models to find enhancement opportunities

Nice to have

Analytical, problem-solving, and passionate about manipulating data in order to learn from it; Academic or professional experience in statistical and mathematical model application and/or validation, and/or experience in credit risk management and/or other risk management frameworks; Bachelor’s degree in Engineering, Economics, Math, Statistics, Physics or related fields; Great coding skills (SQL, Python, Scala, Databricks, Github, Cursor or other similar programming languages); Desirable knowledge of model risk regulation, such as SR 11-7 (FED) and PRA SS1/23; Master's degree or relevant undergraduate scientific project

Benefits

Chance of earning equity at Nubank; Food/ Meal Card (Vale-Refeição and/or Vale Alimentação); Public Transportation Commuting Benefit (Vale-Transporte); NuCare – Psychological, Financial and Legal Assistance Program; Life Insurance; Medical Plan; Dental Plan; NuLanguage – Language Course Program; Nucleo - Our learning platform of courses; Extended Parental Leave; Daycare Allowance; Parental Consultancy; Work-from-home Allowance; Gym Partnerships; 30 days of paid vacation; Relocation Assistance Package, if applicable