2-4 years in data science or analytics with demonstrated business impact. Strong SQL, including complex joins, window functions, CTEs, and query hygiene. Proficiency in Python or R for analysis, experimentation, and reproducible workflows. Working knowledge of statistics: hypothesis testing, experiment design basics, confidence intervals, and regression fundamentals. Experience with BI tools such as Looker or Tableau and building dependable dashboards. Clear written and verbal communication with the ability to explain technical topics to non-technical audiences.