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Elena-Luiza Jalea portrait

I'm Elena-Luiza Jalea

I hold a Master's in Databases and Business Support. I use data analysis and machine learning to turn complex datasets into actionable insights.

Work samples

Discover my innovative web applications that harness machine learning and data analysis to solve real-world problems.

  • Machine Learning Web Application – Stack Overflow Survey
    Machine Learning Web Application – Stack Overflow Survey

    Developed an end-to-end machine learning web application (Python, Streamlit) analyzing data from the Stack Overflow Developer Survey, featuring interactive dashboards, a salary prediction model, and a personalized technology recommendation system based on user experience, location, education, and age.

    PythonStreamlit
  • Loan Approval Prediction Web Application
    Loan Approval Prediction Web Application

    Built a machine learning web application to predict loan approvals from personal and financial data, including exploratory analysis, preprocessing pipelines, classification modeling, and interactive visualizations.

About me

I hold a Master's in Databases and Business Support. I use data analysis and machine learning to turn complex datasets into actionable insights.

I am a recent graduate with a Master's degree in Databases and Business Support. I specialize in exploratory data analysis, feature engineering, and predictive modeling with Scikit-learn and Python. My hands-on experience includes a Data Science internship, where I analyzed extensive financial risk data using Databricks and Python. I also excel in reporting with Power BI and SQL, and I can deploy end-to-end machine learning applications, transforming complex datasets into actionable insights.

Externships

SQL & Database Architecture Externship with Breaking Games

In progress

Experience

Risk Data Scientist Intern

Worldline SA, Bucharest, Romania · Dec 2024 – Apr 2025

Education

Bucharest University of Economic Studies

MSc in Databases and Business Support · Class of 2025

Bucharest University of Economic Studies

BSc in Economic Cybernetics · Class of 2023

Skills

Exploratory Data AnalysisFeature EngineeringPredictive ModelingScikit-learnPandasNumPyStatistical AnalysisData ModelingData PreprocessingETL ProcessesPythonSQLRSASDatabricksJupyter NotebookGitGitHubVS CodePower BIMatplotlibSeabornStreamlitOraclePostgreSQLMySQLMongoDB

Machine Learning Web Application – Stack Overflow Survey

Developed an end-to-end machine learning web application (Python, Streamlit) analyzing data from the Stack Overflow Developer Survey, featuring interactive dashboards, a salary prediction model, and a personalized technology recommendation system based on user experience, location, education, and age.

PythonStreamlit
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Loan Approval Prediction Web Application

Built a machine learning web application to predict loan approvals from personal and financial data, including exploratory analysis, preprocessing pipelines, classification modeling, and interactive visualizations.

View all work

AI Poetry Generator Web Application

Built a full-stack web application (React, Node.js, Express) integrating the Google Gemini API to generate personalized poems based on user-selected topic, style, and language, demonstrating full-stack development and third-party API integration skills.

ReactNode.jsExpressGoogle Gemini API
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✅ Verified by Extern · ⏱️ In progress

SQL & Database Architecture Externship with Breaking Games

Turn six messy CSVs into an analytics database and a Q4 dashboard that drives real business decisions. SQL + Claude.

Analytics Database DesignData AnalysisSQL FundamentalsData Storytelling

Overview

The project consolidated six messy CSV files into a structured analytics database and built queries to populate a Q4 dashboard. The work included inventorying source tables, designing schema and ETL logic, and writing SQL transforms and aggregations for the dashboard.

SQL & Database Architecture Externship with Breaking Games

What I've accomplished

I produced a Holiday Game Plan document with five rapid SQL answers, schema and dim_product notes, three cross-journey queries, a 25-product revenue leaderboard, and reorder recommendations derived from queried metrics.

Project breakdown

On Project 1 I prepared a Holiday Game Plan Google Doc containing five rapid SQL answers, schema and dim_product notes, three cross-journey queries, a 25-product revenue leaderboard, and reorder recommendations based on queried metrics.

Google Docs
Access
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