Sr Data Scientist

This job will lead the development and implementation of advanced data science models and algorithms.

You will work with stakeholders to understand requirements and deliver solutions. Your role involves driving best practices in data science, ensuring data quality, and mentoring junior scientists.

Job Duties: Develop, optimize, and execute data-driven strategies to identify, analyze, and manage payment disputes and chargebacks. Leverage large datasets to improve dispute resolution outcomes, minimize financial losses, and support operational effectiveness. Work cross-functionally with fraud prevention, customer service, and compliance teams to design actionable insights and scalable solutions to address the root causes of disputes and improve both customer satisfaction and operational efficiency. Analyze large volumes of transaction, dispute, and chargeback data to identify trends, root causes, and fraud patterns. Develop and optimize dispute strategies for PayPal, leveraging knowledge of U.S. or international financial markets, card networks, and customer spending behavior. Create business cases in support of new risk policies, vendor integrations, and PayPal dispute infrastructure enhancements. Develop post-transaction risk requirements for product initiatives and prioritize said requirements with partner teams. Collaborate with other PayPal business and technology groups to ensure the optimal deployment of payment solutions to satisfy customer needs and corporate objectives. Monitor regulatory trends and card network requirements related to disputes and chargebacks, and ensure compliance through ongoing analysis and reporting. Partial telecommuting permitted from within a commutable distance.

Additional Responsibilities & Preferred Qualifications : Minimum Requirements: Master’s degree, or foreign equivalent, in Data Science, Statistics, Business Analytics, or a closely related field, plus three years of experience in the job offered or a related occupation.

Special Skill Requirements:

• Experience with Python and SQL for data analysis, automation, and pipeline development (3 years)
• Experience with Machine Learning models for predictive analytics (2 years)
• Experience collaborating cross-functionally with fraud prevention, compliance, and partner teams to develop risk strategies, analytics dashboards, and post-transaction risk requirements for product initiatives (3 years)
• Experience with PL/SQL for developing procedures targeting high-risk transaction identification and risk mitigation (2 years)
• Experience with large-scale transaction data analysis to identify emerging fraud patterns and support chargeback/dispute resolution (2 years)
• Experience with Fraud and Risk Management, including transaction monitoring, pattern analysis, and risk strategy development (3 years)
• Experience with ETL processes, data cleaning, and data transformation for large-scale datasets (3 years)
• Experience with U.S. financial market regulations and resolution frameworks (2 years)
• Experience with network compliance requirements and card scheme regulations, including Visa and Mastercard operating rules (3 years)
• Experience with data visualization platforms (2 years)

Benefits: At PayPal, we’re committed to building an equitable and inclusive global economy. And we can’t do this without our most important asset-you. That’s why we offer comprehensive, choice-based programs, to support all aspects of personal wellbeing,physical, emotional, and financial,delivering meaningful value where it matters most. We strive to create a flexible, balanced work culture with a holistic approach to benefits, including generous paid time off, healthcare coverage for you and your family, and resources to create financial security and support your mental health.