🎯 Data Scientist | Applied Data Science @ University of Chicago
🧠 Neuroscience + Quantitative Science @ Emory | Top 15%
💡 Turning data into insights across marketing, trading, and forecasting

📧 joeyifei@outlook.com | 📍 Chicago, IL

• 📈 Forecasting Expert – Built SARIMA, Prophet & XGBoost models to predict sales, optimize inventory, and detect anomalies (15% drop in error; mitigated $10M potential loss).
• 💹 Trading Strategy Developer – Designed momentum-based stock strategies for asset allocation (20% annualized return at Balentine Wealth).
• 📊 Dashboard & Insights Builder – Created 10+ dashboards in Tableau, Power BI, Google Analytics to guide marketing & financial decisions.
• 🧪 A/B & Cohort Testing – Improved user retention and campaign ROI through statistical testing and customer segmentation (5% increase in cohort frequency at Ogilvy Health).
• 🔎 Growth-Oriented Analyst – Worked across 5M+ data points, reduced refresh time by 90%, and automated custom reporting at Nielsen.

🔹 Data Scientist Intern – Nielsen
→ Modeled demand trends and macroeconomic impacts, automated forecasting, and drove decision-making with custom dashboards.

🔹 Marketing Analytics Intern – Ogilvy Health
→ Segmented 30K+ users, tested outreach channels, and optimized launch performance for a top pet allergy product.

🔹 Trader Intern – Balentine Wealth Advisor
→ Designed real-time momentum trading models with historical trend insights and portfolio impact.

🔹 Investment Analyst – Diamond Equity Research
→ Built dynamic financial models and dashboards to support equity research and valuation for small-cap companies.

I’m also into swing dancing and jazz piano — data by day, improv by night. 🎹🕺

“Driven by curiosity. Powered by data.”