Portfolio: https://diassmatheus.github.io/For 3 years I've been providing insights and optimizing business understanding and decision-making through data.Currently serving as a Data Analyst on the Quality and Business Strategy team at the cybersecurity multinational Telefónica Tech.I have a degree in Production Engineering at the Federal University of Technology - Paraná, and I am a member of the Research Group in Optimization and Data Mining, with publications in scientific journals and conferences.Key Tools and Skills:- Python (Pandas, NumPy, Matplotlib, Seaborn, Scikit-learn)- MySQL | SQL Server- Power BI | Tableau- GitHub | Git- Excel | Google Sheets- Machine Learning algorithms (supervised and unsupervised)- Data visualization and storytelling- Probability and statistics- ETL (Extract, Transform, Load)- Analytical mindset and critical thinking- Business Intelligence- Design ThinkingLanguages: Portuguese, English, Spanish.