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Lena Cho

Junior Data Analyst
Austin, United States

Professional Summary

Results-driven Junior Data Analyst with 2+ years turning messy operational data into clear decisions for product and growth teams. Fluent in SQL, Python, and Looker; comfortable owning weekly KPI packs and ad-hoc deep dives. Known for clean notebooks, stakeholder-friendly dashboards, and catching data quality issues before they hit leadership reviews.

Employment History

Junior Data Analyst
Horizon Retail Labs · Austin, TX
Jun, 2024 · Present
• Built Looker dashboards tracking conversion, AOV, and cohort retention for 4 product squads; cut weekly reporting time from 6 hours to under 90 minutes. • Wrote parameterized SQL models that unified Shopify, GA4, and warehouse inventory feeds; reduced metric mismatches in exec reviews by ~40%. • Partnered with growth to A/B-test checkout messaging; analysis informed a winning variant that lifted completed checkouts 3.2% over 6 weeks. • Automated anomaly alerts in Python for daily revenue dips; flagged 12 incidents before they appeared in the CEO digest.
Data Analyst Intern
Capstone Analytics Co-op · Austin, TX
Jan, 2023 · May, 2024
• Cleaned and documented 18 client datasets in BigQuery; shipped reusable dbt staging models used by 3 senior analysts. • Produced monthly cohort and funnel reports for a B2B SaaS client; supported two board decks with clear visuals and footnotes. • Built a Python script to validate CSV uploads against schema rules; cut onboarding errors for new data sources by half.
Research Assistant
Campus Insights Lab (UT Austin) · Austin, TX
Aug, 2021 · Dec, 2022
• Analyzed survey responses (n=2,400) in R/Python for student retention study; co-authored internal brief shared with advising leadership. • Created reproducible notebooks and a simple Streamlit prototype so advisors could explore major-switch patterns without SQL.

Education

B.S. Statistics
University of Texas at Austin · Austin, TX
2019 · 2023
Relevant: Regression, Experimental Design, Databases, Machine Learning I

Skills

SQL
Python
Looker
dbt
Tableau