Freelance Data Science Specialists in SpainFreelance Data Science Specialists in Spain
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Arnau Sastre's avatar
Arnau Sastre
Barcelona, Spain
Analista de Datos | Insights, modelos | optimización | ML
Analista de Datos | Insights, modelos | optimización | ML
Cover image for Designed an AI-powered decision support
Designed an AI-powered decision support system combining quantitative models, machine learning and deep learning techniques to analyze financial markets. The platform automated data collection, strategy evaluation and backtesting, providing a scalable framework for continuous strategy development. The project demonstrated how advanced analytics can support systematic and data-driven investment decisions.:
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Cover image for Multi-Horizon Demand Forecasting Designed and implemented
Multi-Horizon Demand Forecasting Designed and implemented a multi-horizon demand forecasting system for an e-commerce business to improve inventory planning and operational decision-making. The solution generated forecasts across multiple planning horizons while automating forecasting workflows and scenario analysis. This enabled business teams to make more informed purchasing and inventory decisions while reducing manual forecasting efforts.
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Cover image for Credit Risk Modeling Developed a machine
Credit Risk Modeling Developed a machine learning solution for consumer credit risk assessment, helping improve lending decisions through predictive analytics. The project included feature engineering, model evaluation and probability calibration to deliver reliable risk predictions while supporting regulatory and business requirements. The final solution provided a scalable analytical framework for consistent and data-driven credit decision making.
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Cover image for Built a centralized investment analytics
Built a centralized investment analytics and business intelligence platform to automate KPI tracking, operational reporting and executive dashboards. The solution integrated multiple data sources into a single decision support system, eliminating manual reporting while providing daily insights into investments, clients, providers and overall business performance. The platform included automated data pipelines, KPI monitoring and executive dashboards designed to support faster and more informed business decisions.
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Data Science Specialist(1)