My Resume
In case you want to download my CV, you can get it by clicking this button: Download my Curriculum Vitae (CV)
STESIAM
Statistics Graduate
stesiam [at] proton [dot] me stesiam.com @stesiam @stesiam Athens, Greece
My name is Stelios! I am a recent graduate of Statistics and Insurance Department. R is my go-to tool for my data analysis tasks. I have some hands-on experience, by writing notebooks and developing some simple Shiny apps. I would like to further enhance my knowledge - skills, concerning R, in a working environment.
PROJECTS
Scraping data
On this project I scrape the register of Insurance companies which is hosted on Bank of Greece’s website. The dynamic nature of the table led to use a combination of rvest and RSelenium. On every page iteration I get the table data and on every row iteration I automate a click on every insurance companies’ profile in order to scrape their address wherever it is provided.
Data Visualization
For at least two years I have been practicing on data visualization using R and ggplot. Those years I have taken part to a lot of challenges such as #TidyTuesday, and #30DayChartChallenge.
Data Analysis
An analysis based on Kaggle’s recent survey (2022). My analysis focuses primarily on Greek users. Comparing them with the rest users of Kaggle, I came up with interesting facts as the comparatively low representation, significantly higher age and expeirience and lower representation of women in contrast to the average participation of women in Kaggle.
ML Web Applications
Based on Greek Developers’ Wages survey, I make the appropriate cleaning of data in order to build a regression (XGBoost) model with tidymodels. The app can predict the wage of a web developer based on some characteristics such as years of programming experience, employer’s country, etc. The accuracy of my model can be characterized mediocre due to the fact that the dataset is relatively small, as it is consisted of 800 participants. Light enhancements, concerning model’s accuracy, have been observed in case of larger grids and combining models.
EDUCATION
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BSc. in Statistics and Insurance Science
University of Piraeus
Graduated at June, 2025
During my studies, I was taught several statistics-related courses and had some exposure to statistical programs. Indicatively,
- Probabilities
- Statistics: Estimation Theory
- Non-parametric Statistics
- Sampling and
- Statistical Programs using R
are some of the most influential courses that helped me develop my knowledge regarding Statistics.