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cbjonesea/README.md

Hi, I'm Chels 👋

After a 5 year career in the sustainabiltiy & ESG domain, I'm transitioning to a role in in data science & analytics for a variety of industries.
Currently, I'm completing an M.Sc. in Data Science at Tilburg University.

Here you can see some of the projects I'm working on to build my skillset in:

  • Data exploration / transformation
  • Data visualization
  • Designing & tuning machine learning models
  • Building pipelines
  • Querying & maintaining databases

Using:

  • Python
  • SQL
  • Power BI
  • Excel

Portfolio Guide

Project Link Tools & Libraries Domain Methods Description
Predicting employee turnover with machine learning Python (pandas, numpy, scikit-learn, seaborn) HR Analytics Supervised learning - classification Predict and gain insights into employee turnover factors using decision trees and logistic regression (in progress)
Rental revenue prediction with machine learning Python (pandas, numpy, scikit-learn, seaborn) Real Estate Supervised learning - regression Predict the revenue of rental properties using feature selection and hyperparameter tuning for various machine learning models (in progress)
Northwind Traders inventory management with SQL PostgreSQL Inventory & Logistics Exploratory analysis A SQL script exploring and aggregating inventory and order data for a wholesale gourmet food company
Best advertising markets for an e-learning app Python (pandas, numpy, matplotlib, seaborn), Jupyter Lab Marketing Exploratory analysis Python data exploration and visualization to find the best advertising markets for an e-learning platform
Company GHG emissions time series construction Python (pandas, numpy, matplotlib, scipy) Sustainability / ESG Time sereis analysis Python script to construct emissions pathways based on company emissions data

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  1. cbjonesea cbjonesea Public

  2. ML-assignment ML-assignment Public

    Final assignment for Machine Learning class (block 4 2025, Tilburg University)

    Jupyter Notebook 1

  3. NorthwindTraders_SQL NorthwindTraders_SQL Public

    Exploration of business questions for a wholesale food company using PostgreSQL

  4. python-advertising-marketselection python-advertising-marketselection Public

    Python data exploration to find the two best markets for advertising a (fictional) e-learning platform

    Jupyter Notebook

  5. emissions-pathways emissions-pathways Public

    Python script to construct emissions pathways based on company emissions data

    Python

  6. EmployeeTurnover EmployeeTurnover Public

    Building a machine learning model to predict employee turnover

    Jupyter Notebook