Data Scientist & Analyst

Learn Data.
Drive Results.

With Kostanca

I help businesses and beginners use data in a simple, practical way.

Kostanca
โšก Business Insights
๐Ÿ“‚ Projects
๐Ÿ“š Tutorials
Hey ๐Ÿ‘‹!!

I'm Kostanca Kovaci

A physicist who fell in love with data.
My path into data science wasn't typical and that's exactly what makes it powerful.

It started in 2019 studying Physics, where I built deep foundations in mathematics, statistics, and programming. My first real encounter with data was my thesis โ€” implementing non-linear recursive relations in Python โ€” and I was hooked.

In 2025 I completed my MSc in Data Science, and somewhere along the way GrowInData was born, a space to do what I love most: create value through data, teach others, and help businesses grow.

I'm not just a data scientist, I'm a translator between data and decisions. Patient, clear, and passionate about making data accessible to everyone. Whether you're a business that needs insights or someone who wants to learn โ€” I'm here to learn, build, share and grow together with you.

I work across four areas:

  • Data Analysis & Reporting โ€” I turn messy, overwhelming datasets into clear findings your team can actually act on
  • Dashboards & Visualisation โ€” I build live, interactive tools that make data accessible to everyone โ€” not just analysts
  • ML & NLP โ€” from churn prediction to bias research in LLMs (my MSc thesis), I build models that solve real problems
  • Tutorials & Courses โ€” I teach data science step by step, because good data thinking should be accessible to everyone

What matters to me is the last mile โ€” the insight that actually gets acted on.

View My Work

Projects & Work

Real problems solved with real data

How I Can Help You

From raw data to real decisions โ€” here's what we can build together

Custom quote ยท Free consultation

Data Analysis & Report

You have data. I tell you what it means and what to do about it โ€” clear findings, visualisations and recommendations your team can act on immediately.

  • Data cleaning & Exploratory Analysis
  • Visual insights & explanations
  • Business-focused recommendations
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Custom quote ยท Free consultation

Academic & Research Support

Data analysis and visualization support for academic or research projects โ€” from cleaning to final figures.

  • Data Cleaning & statistics
  • Reproducible notebooks
  • Thesis & research support
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Not sure which service fits your needs?

Let's Talk

My Tech Stack

Python Python
Pandas Pandas
NumPy NumPy
SQL SQL
Jupyter Jupyter
GitHub GitHub
VS Code VS Code
Scikit-learn Scikit-learn
Power BI Power BI
Tableau Tableau
Excel Excel
Google Sheets Google Sheets
Streamlit Streamlit

Learn โ†’ Build โ†’ Grow

๐Ÿ“–

Learn

Let's break down complex data science concepts into clear, simple, digestible tutorials โ€” so whether you're a complete beginner or levelling up, you always understand what's happening, why and how.

๐Ÿ› ๏ธ

Build

Theory without practice goes nowhere and knowledge without application is useless. Every tutorial, course and project is hands-on โ€” real datasets, real problems, real code you can use to learn.

๐Ÿš€

Grow

Whether you're a business turning data into decisions or a learner building your career โ€” the goal is always the same: real, measurable growth you can be proud of.

Blogs & Insights

Thoughts on data science, analytics, and real-world problem solving

From Code to Insight: A Systematic Framework for Developing Data Interpretation Skills

Read More โ†’

The Beginner's Trap: Learning Tools Without Solving Problems

Read More โ†’

Tutorials & Courses

Step-by-step guides to sharpen your data skills

Let's Work Together

Open to freelance projects and remote collaborations.
Whether you have a specific project in mind or just want to explore what's possible with your data โ€” I'm happy to have a conversation. No pitch, no pressure.

Get in Touch

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