Data Science Expert (Python & SQL) - AI Trainer (Freelance, Remote)
- Hiring Organisation
- Braintrust
- Location
- Gloucester, Gloucestershire, UK
- Employment Type
- Full-time
assessment, fraud detection, forecasting, optimization, and operational efficiency Design end-to-end problems spanning the complete data science pipeline (data ingestion → cleaning → EDA → modeling → validation → deployment considerations) Incorporate big data processing scenarios requiring scalable computational approaches Verify solutions using Python with standard data science libraries and statistical methods Document … modeling algorithms Fraud detection with precision-recall optimization A/B test statistical calculations and experimental design Cohort analysis and retention rate computations Model evaluation metrics and performance optimization Statistical Analysis & Data Processing Hypothesis testing with multiple comparison corrections Causal inference: propensity score matching, difference-in-differences Complex ...