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stefanosstefani

Stefanos S

@stefanosstefani

Data Analyst and AI Specialist

Grécia
Inglês, Francês
Algumas informações são exibidas no idioma inglês.
Sobre mim
I turn raw data into decisions. Data and BI Analyst with real business experience and an MSc in AI and Data Analytics (University of Essex). I deliver: Power BI dashboards with DAX and KPIs, Python analysis with Pandas and Scikit-learn, SQL pipelines, predictive models and Tableau reports. Recent projects: Customer churn model at 94.5% accuracy, Heart Failure Power BI dashboard, Airbnb NYC Tableau analysis and SQL Data Warehouse design. Clean work. Clear insights. Fast delivery. Let us talk.... Saiba mais

Habilidades

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stefanosstefani
Stefanos S
offline • 

Conheça meus serviços

Painéis de dados
I will create a professional power bi dashboard with kpis and dax
A partir deUS$ 50 /projetoMais detalhes
Modelagem e Análise Estatística
I will perform python data analysis and create a detailed pandas report
A partir deUS$ 20 /projetoMais detalhes

Experiência profissional

Data Analyst

Koukakis Farm S.A.

Dec 2021 - Present • 4 yrs 5 mos

Designed and maintained interactive Power BI dashboards tracking KPIs across sales, inventory, and operations — reducing reporting time by 60%. Built Python and SQL pipelines to automate data extraction, cleaning, and analysis from multiple sources. Developed a machine learning model to predict high-value customers, enabling targeted marketing campaigns that improved conversion rates. Created Tableau visualizations for executive-level reporting and ad hoc analysis. Collaborated with management to translate business questions into data-driven insights.