
Alonso Vives
Business Intelligence Engineer | Analytics
Salary / Daily rate
Madrid, Spain
Freelance, open to permanent contract
Remote only
Skills
Languages
About me
Intro
Business Intelligence Engineer with expertise in ETL optimization, data migration, and Power BI development. Led cost-reducing Oracle-to-PostgreSQL migrations and built scalable Python pipelines with complete automation. Specialized in translating complex data insights into actionable business decisions for insurance and finance sectors.
Work experience
Business Intelligence Analyst
AXA
May 2025 - Oct 2025
6 months
Data Analyst
SDG Group España
Oct 2024 - May 2025
8 months
- Development and optimization of a highly modular and scalable double ETL in Python, fully monitored and automated. - Complete migration of an environment based on Oracle and Business Object (SAP) to PostgreSQL and Power BI, reducing maintenance costs and unifying and simplifying access to information. - Design of a complete semantic model for all necessary personal and financial data used in reports. - Creation and standardization of reports using Power BI. - Collaborative work with financial teams and multidisciplinary developers to define objectives, estimate deadlines, and track progress. - Development of an SQL translator from Oracle SQL to PostgreSQL SQL using TypeScript and Google Sheets. - Documentation of the entire development process for internal and client use. - Orchestration of ETL execution using Control-M. - Implementation of an application to execute the ETL with endpoints and monitoring via Elastic. Technologies & Skills: Python, SQL, Power BI, DAX, M, GitHub, PostgreSQL, Oracle, TypeScript, Excel, Google Sheets, Control-M, teamwork, Scrum, Agile Methodology, Elastic, FastAPI, Flask, Pandas.
Assistant
Atocha Mediación SL
Feb 2024 - Jul 2024
6 months
Madrid, Spain
- Developed and managed databases and data entry tasks, ensuring accuracy and efficiency. - Supported internal communication processes and managed departmental documentation.
Intern
PwC España
Jul 2023 - Dec 2023
6 months
Madrid, Spain
Desde el departamento de GRC (Governance, Risk y Compliance): análisis e interpretación de datos en los proyectos de riesgo y cumplimiento, asegurando la comunicación de conceptos técnicos a partes interesadas no técnicas. Propuestas para el refuerzo de la digitalización de la empresa mediante la aplicación de modelos de ingeniería de datos.
Education
Universidad Nacional de Educación a Distancia (UNED)
Master's degree on Data Science and Data Engineering
2025 - 2026
1 year 1 month
ISIE - Instituto Superior de Investigación Empresarial
Advanced Course in Intelligence and Business
2025 - 2025
5 months
Universidad Complutense de Madrid
Computer Engineering Degree
2019 - 2024
5 years 2 months
Universidad Complutense de Madrid
Business Administration Degree
2019 - 2024
5 years 2 months