Senior Data Scientist — Data Foundations & AI

## About the Role Plaid is hiring a Senior Data Scientist to work on Data Foundations & AI, developing ML models that power the financial data infrastructure used by thousands of fintech apps. You will build models for fraud detection, data enrichment, and financial data classification at massive scale. ## Responsibilities - Design and implement ML models for fraud detection, transaction categorization, and data quality - Build and improve classification systems processing billions of financial transactions - Develop experimentation frameworks to measure model performance and business impact - Collaborate with engineering teams to deploy models in production at scale - Research and apply state-of-the-art techniques in NLP and tabular data modeling ## Requirements - 5+ years of experience in data science or ML engineering - Strong proficiency in Python, SQL, and ML frameworks - Experience with NLP, classification systems, or fraud detection models - Track record of deploying ML models in production - Experience working with financial data or payments systems preferred - MS or PhD in a quantitative field preferred