Senior Strategy and Fraud Prevention Analyst (ML and Modeling)

Description

Job Summary: The PagBank is seeking a professional to develop and implement predictive fraud prevention strategies using machine learning and data analysis, within a collaborative and innovative environment. Key Highlights: 1. Strategic fraud prevention using machine learning 2. Dynamic fintech environment focused on innovation and technology 3. Collaborative culture and ownership mindset to make a difference When you think about your career, what comes to mind? Purpose? Collaboration? Being an agent of change? At PagBank, we offer all this — and much more. We’re looking for people who proudly wear our jersey. People eager to simplify people’s financial lives and drive business growth! Ready for a career that delivers greater returns? **Check out this opportunity and \#JoinPagBank!** **Responsibilities and Duties** * Develop and implement predictive fraud prevention strategies using supervised and unsupervised machine learning (decision trees, gradient boosting, clustering, outlier detection). * Design, enhance, and document analytical pipelines and databases supporting anti-fraud decision-making. * Create, calibrate, and optimize operational rules in decision engines using statistical analysis, historical data, and behavioral data. * Conduct A/B tests to evaluate the impact of new models, policies, and adjustments to decision workflows. * Continuously monitor transactions, credit operations, and suspicious events to identify patterns, anomalies, and emerging fraud vectors. * Perform advanced exploratory and diagnostic analyses to investigate deviations and formulate new anti-fraud hypotheses. * Partner with Technology, Product, and Customer Support teams to implement, monitor, and evolve anti-fraud solutions. * Identify vulnerabilities in internal workflows and propose data-driven, indicator-supported improvements. * Produce executive reports with strategic insights and recommendations for various organizational levels. * Draft, update, and maintain standard operating procedures (SOPs) related to fraud prevention. * Implement and oversee risk controls for individual and corporate clients, ensuring ongoing compliance and mitigation. * Contribute to strengthening governance practices by supporting policies, metrics, and monitoring rituals. **Requirements and Qualifications** * Bachelor’s degree in Computer Science, Engineering, Statistics, Economics, Mathematics, Information Systems, or related fields. * Proven experience in fraud prevention and detection within financial institutions, fintechs, or technology companies. * Strong background in data analysis, statistical modeling, and machine learning applied to risk and fraud. * Proficiency in SQL, Python, and/or R. * Experience handling large-scale datasets, including data processing, extraction, and interpretation of complex patterns. * Experience designing, maintaining, and optimizing rules in anti-fraud decision engines. * Familiarity with visualization tools (Power BI, Tableau, Looker, etc.). * Experience in continuous performance evaluation of rules and models. * Advanced Office suite proficiency. * Intermediate English proficiency. **Additional Information** **To stand out in this role, it would be great if you also have:** * Experience with fraud typologies such as identity fraud, digital fraud, credit fraud, and money laundering. * Experience with real-time decision systems and anti-fraud platforms. * Knowledge of MLOps, model deployment, and model monitoring. * Understanding of financial market regulations and fraud prevention best practices. * Ability to conduct complex investigations using logical, statistical, and investigative reasoning. You might know us from our card machines or memorable commercials — but we’re so much more! Every day, we build products and solutions inspired by our purpose: simplifying people’s and businesses’ financial lives. We’re transforming how people interact with money — opening new possibilities to achieve their dreams. **How do we do it?** **With People** We’re a team that plays together! We value all forms of diversity — race/ethnicity, gender, age, origin, persons with disabilities, sexual orientation, family composition, and aesthetics. **With Technology** Our disruptive and innovative spirit is in our DNA: we’re part of UOL Group, a 100% Brazilian company, internet pioneer since 1996, transforming people’s lives for over 25 years. **With One Culture** We have a strong, unified culture that drives us beyond limits — enabling continued growth and long-term business sustainability. **We are one of the largest digital banks in the country and one of the most profitable fintechs in the segment.** **To experience all this, you’ll receive a comprehensive benefits package that truly makes a difference:** * Meal allowance and/or food voucher. * Health and dental insurance. * Life insurance. * Partnerships with TotalPass and ZenKlub. * Extended maternity and paternity leave. * Childcare assistance. * Up to 50% discount on postgraduate and MBA programs at top institutions, including FIA, FAAP, and PUCRS. **And more:** * No dress code: wear whatever makes you feel comfortable. * \#HappyBirthday: Birthday day off. * Baby Gift: gift for newborns. **Ready for a career that delivers greater returns?** Join our unbeatable team! **\#JoinPagBank.**