02Portfolio

Selected projects & case studies

Each project starts with a real question. Click a card for the full story, or jump to where it happened on the map. Experience and skills are further down.

Machine Learning2025

Retail Demand Forecasting

Store-level weekly demand forecasts for 300+ SKUs.

−17 pt

forecast error

Dashboards & BI2024

Executive Sales Dashboard

One source of truth for regional sales and margin KPIs.

120+

weekly users

Machine Learning2024

Customer Churn Prediction

Identifying subscribers likely to leave, 60 days early.

−9%

monthly churn

Research & Analysis2023

Coastal Tourism Seasonality

What drives visitor numbers along the Aegean coast?

2×

variance explained

Research & Analysis2023

Checkout A/B Testing Program

A repeatable experiment framework for an e-commerce team.

+6.2%

conversion

Dashboards & BI2022

Factory Energy Monitor

Near real-time energy use per production line.

−18%

idle energy

Experience

  1. 2023 — Now

    Senior Data Analyst · Retail & E-commerce

    Forecasting, experimentation and self-service BI for commercial teams.

  2. 2021 — 2023

    Data Analyst · Telecom

    Customer analytics, churn modelling and KPI reporting.

  3. 2019 — 2021

    Junior BI Analyst · Manufacturing

    Built the first data warehouse and operational dashboards.

Skills

Skill profile

self-assessed · 0–100
SQL95
Python (pandas, scikit-learn)90
Power BI / Tableau88
Statistics & A/B testing85
Machine learning78
Data engineering (dbt, Airflow)70

Everyday toolbox

SQLPythonRPower BITableauLookerdbtAirflowBigQueryExcelGitDocker