Malia Sharkey
Data Scientist II, Expedia Group
- Role
- Data Scientist Ii at Expedia Group
- Location
- Seattle, WA, US
- LinkedIn followers
- 500 followers
Experience
Data Scientist Ii
Aug 2022 — Present · Seattle, WA, US
Financial TechnologyWorked on time series forecasting using Python (SARIMAX, random forest regression), applying feature selection and correlation analysis to improve model performance. Optimized legacy SQL workflows with PySpark and Pandas, and built ETL pipelines to centralize transactional data and enhance reporting accuracy.Marketing Analytics – Incrementality TestingLed the full lifecycle of geo-based A/B time series tests in R to measure ad effectiveness and incremental impact. Delivered insights using SQL, Tableau, and R Shiny dashboards, applying hypothesis testing and regression analysis to guide marketing strategy and ad spend optimization.Product Analytics – Fraud & RiskConducted data analysis on supplier login behavior using PySpark, time series methods, and correlation analysis to identify friction points and fraud risks. Built classification models using anomaly detection in Python and designed Tableau dashboards to monitor fraud-related KPIs and support risk mitigation efforts.
Education
Case Western Reserve University
Bachelors
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