About Guillem
Data Scientist with a Master’s in Data Science and a background in Business Analysis/BI, focused on machine learning, data analysis, and data cleaning/preprocessing. I use Python and Power BI to transform complex and messy data into reliable datasets, analytical models, and actionable insights. My experience combines technical rigor with business understanding, helping turn data into practical improvements in decision-making and performance.
Spanish
Native or bilingual
Catalan
Native or bilingual
English
Fluent
French
Fluent
Remote only
Primarily works remotely
Experience
- Teleperformance GreeceBusiness Intelligence AnalystJune 2024 - December 2025 (1 year and 6 months)Design, implement, and modify interactive Power BI dashboards to deliver actionable insights. Integrate data from MS SQL Server databases, using SQL queries and Python scripts for data processing and analysis. Develop and implement automation workflows to streamline data processes, reducing manual effort and improving data accuracy. Enhance reporting efficiency by automating repetitive tasks and ensuring data consistency for more reliable decision-making.
- N26 bankAnalyst anti-Financial CrimeApril 2022 - May 2024 (2 years and 1 month)Monitored and ensured strict adherence to established procedures within the Anti-Financial Crime department of N26 bank. Produced detailed reports on KPIs and quality metrics. Offering valuable insights to senior management for strategic decision-making and areas of improvement. Making sure the team is consistently surpassing the target KPI of 90% accuracy. Collaborated with law enforcement agencies and regulatory bodies, providing timely information to support investigations.
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Education
- Master in Data ScienceOpen University of Catalonia2026Master in Data Science
- Technical Engineering in Information TechnologyOpen University of Catalonia2013Technical Engineering in Information Technology