Alexandros Papakostopoulos is a dynamic Software Developer and owner of Martingale (solo project), where he specializes in creating innovative solutions for complex technical challenges. Martingale is a web app that provides free greek derivatives market data, market analysis tools and portfolio management resources that help investors boost their investment success. The technology stack consists of online data collection, complex data conversion and ETL processes, database management, backend development, frontend development, cloud deployment, Rest API data exposure, data analysis through monitoring of financial KPIs and user dashboards, Azure DataBricks integration.More...