Prague · Open to opportunities

Bc. Tomáš
Virba
Data Analyst & Scientist

Final-year Econometrics & Operations Research student with a robust foundation in mathematical modelling, data science, and statistical programming. Experienced in advanced statistical analysis, with a proven ability to translate complex data into actionable business insights.

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Available for work Python · R · SQL Prague, CZ
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// 01 — About

Who I Am

I'm a final-year Econometrics & Operations Research master's student at the Prague University of Economics and Business, with a minor in Data Engineering. My foundation blends rigorous mathematical modelling with practical, production-level data work.

At EGAP (Czech Export Bank's insurance arm) I worked inside the Risk Department — maintaining Solvency II capital models, calculating Underwriting SCR, and preparing regulatory documentation for the Czech National Bank.

At Trayan Company I built automated reporting pipelines, cleaned messy customer data, and created interactive dashboards that replaced hours of manual work every month.

2+Years Exp.
2Companies
4Projects
tomas_virba.json
// snapshot — 2025
{
  "name": "Bc. Tomáš Virba",
  "location": "Prague, CZ",
  "email": "virbatom@gmail.com",
  "phone": "+420 608 841 406",
  "degree": "MSc Econometrics & OR",
  "minor": "Data Engineering",
  "languages": [
    "Python", "R", "SQL"
  ],
  "focus": [
    "Data Science",
    "Mathematical Modelling",
    "Data Analytics",
    "Data Visualisation"
  ],
  "open_to_work": true
}
// 02 — Skills

What I Work With

🐍

Python

pandasNumPyscikit-learn MatplotlibSeabornstatsmodels SciPyJupyter
📐

R & Statistical Modelling

RStudioggplot2dplyr tidyverserugarchspdep EconometricsTime Series
🗄️

SQL & Databases

SQLQuery optimisationETL pipelines Data integrationData cleaning
📊

Data Visualisation

Power BIMicrosoft ExcelMatplotlib Seabornggplot2Dashboard design
🧮

Mathematical Modelling

Operations ResearchOptimisation SCR / ORSACapital planningRisk modelling Solvency II
⚙️

Data Engineering (minor)

Pipeline automationData integration Excel automationPython scripting
// 03 — Projects

Selected Work

Academic Project · Python Data Science

Credit Risk Analysis

Analysed a historical loan portfolio of 10,000 clients across three distribution channels. Identified default drivers, evaluated channel profitability, and built a logistic regression classifier to predict loan defaults.

AUC 0.88 10k clients 95.7% accuracy
Pythonpandas scikit-learnstatsmodels SeabornMatplotlib
Academic Project · Python Machine Learning

Diabetes Prediction from Lifestyle Indicators

Built classification models to predict diabetes diagnosis from demographics, lifestyle habits, and clinical biomarkers across 100,000 patients. Compared Logistic Regression, Random Forest, and advanced pipelines with KNN imputation and cross-validation.

100k patients 31 features 5-fold CV
Pythonscikit-learn pandasNumPy SeabornSciPy
Academic Project · R Finance

VaR Backtesting: GARCH vs EGARCH

Compared GARCH and EGARCH models for Value at Risk estimation during market crisis periods. Applied the Dynamic Quantile Test to backtest VaR accuracy and assess whether volatility models adequately capture tail risk in extreme conditions.

GARCH / EGARCH VaR backtesting Crisis analysis
Rrugarch quantmodPerformanceAnalytics tseriesmoments
Academic Project · R Spatial Econometrics

Population Aging & Employment — Spatial Analysis

Investigated the spatial impacts of population aging on regional employment across German and Austrian NUTS regions. Used spatial econometric models (spatial lag, spatial error) with Eurostat data to capture cross-regional dependency effects.

NUTS regions Spatial lag / error Eurostat data
Rspdep spatialregsf ggplot2tidyverse
// 04 — Experience

Where I've Worked

May 2025 — December 2025
Data Analyst / Scientist — Risk Department
Exportní garanční a pojišťovací společnost (EGAP)
  • Maintained the Partial Internal Model for Solvency Capital Requirement (SCR)
  • Calculated Underwriting SCR for reporting and capital planning
  • Prepared regulatory documentation for the Czech National Bank
  • Contributed to ORSA reports and medium-term capital planning
  • Performed statistical data analysis using R
September 2023 — Present
Junior Data Analyst
Trayan Company
  • Wrote SQL queries to extract and automate monthly sales reports
  • Cleaned messy customer datasets using Python Pandas
  • Built automated sales dashboards in Power BI, saving 10 hours/month of manual work
  • Merged Excel files into a centralised SQL database using Python
  • Visualised sales trends with Matplotlib for stakeholder presentations
// 05 — Education

Academic Background

2024 — 2026 · Ongoing

MSc Econometrics & Operations Research

Prague University of Economics and Business (VŠE)
Minor in Data Engineering. Final semester — combining advanced statistical theory with hands-on data pipeline work.
2020 — 2024

BSc Econometrics & Operations Research

Prague University of Economics and Business (VŠE)
Strong foundation in mathematical modelling, optimisation, and statistical programming in Python and R.
2012 — 2020

Secondary School — Mathematics & IT

Gymnázium Alejová 1, Košice
8-year programme with specialisation in mathematics and information technology.
// 06 — Contact

Let's Work Together

Whether you have a role, a dataset that needs untangling, or just want to talk data — reach out.