1) Python (Pandas, Matplotlib, NumPy, Scikit-Learn, etc)

2) Knowledge of ML alghoritms

3) Mathematics (Statistics, Probability, Linear algebra, etc)

4) Git (GitHub, GitLab)

5) SQL

6) Spreadsheets (MS Excel, Google)

7) BI Techniques (Data Visualization, Data Mining, Reporting, etc)

8) Tableau

9) Strong technical and analytical skills