John Costello
Applied Statistics MS at CSULB | Data Analyst | Biostatistics
- Role
- Tutor at Study Hut Tutoring
- Location
- Los Angeles, CA, US
- LinkedIn followers
- 500 followers
About John Costello
I\'m a data analyst and Applied Statistics grad student with a passion for transforming raw data into actionable insights. At the U.S. Environmental Protection Agency, I built automated ETL pipelines and developed dashboards in Power BI to improve cybersecurity tracking and operational decisions. My technical toolkit includes Python, SQL, Power BI, and R — with experience in machine learning (XGBoost, PCA, stacking), time series forecasting (SARIMA), and dashboarding with real-world data. I’ve built projects around environmental patterns, global happiness, and public safety, and I’m always exploring how data can improve outcomes. Currently seeking internship or entry-level roles in data analysis, business intelligence, or machine learning. Let’s connect if you\'re looking for a reliable, impact-driven analyst with strong communication and storytelling skills.
Experience
Tutor
Jul 2025 — Present
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