# @woman.engineer on Instagram

- **Type:** Image
- **Original URL:** https://www.instagram.com/p/DW9bJBXCKM-
- **Gondola URL:** https://gondola.cc/posts/63508555-womanengineer-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/465c0a4bf6.jpg
- **Posted:** 2026-04-10T17:36:12.000+00:00
- **Account Owner:** Zeynep Küçük  Woman Engineer (@woman.engineer) — https://gondola.cc/woman.engineer

## Caption

👩🏻‍💻How to prepare for Data Scientist role in 2026 📌save for later 

CORE SKILLS YOU MUST MASTER: Programming You must be fluent in:

● Python
● NumPy
● Pandas
● Scikit-learn

Writing clean, readable, bug free code
Data transformations without IDE help
Expect:
● Data cleaning
● Feature extraction
● Aggregations
● Writing logic heavy code

SQL
Almost every Data Science role tests SQL. You should be comfortable with:
● Joins - inner, left, self
● Window functions
● Grouping & aggregations
● Subqueries
● Handling NULLs

Statistics & Probability:
● Probability distributions
● Hypothesis testing
● Confidence intervals
● A/B testing
● Correlation vs causation
● Sampling bias
Machine Learning Fundamentals. You must know:
● Supervised vs Unsupervised learning
● Regression & Classification
● Bias Variance tradeoff
● Overfitting / Underfitting

Evaluation metrics:
● Accuracy
● Precision / Recall
● F1-score
● ROC-AUC
● RMSE

FEATURE ENGINEERING & DATA UNDERSTANDING:
● This is where strong candidates stand out.
● Handling missing data
● Encoding categorical variables
● Feature scaling
● Outlier treatment

More in the comment …

#datascientist #aiengineer #codinglife #softwaredeveloper #programming

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## Tags

programming, softwaredeveloper, aiengineer, datascientist, codinglife

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