Alonso Vives

Business Intelligence Engineer | Analytics

Salary / Daily rate

Madrid, Spain

Freelance, open to permanent contract

Remote only

Skills

Data AnalysisData EngineeringSQL QueriesData ScienceGitHubSQL databasesMachine LearningCPythonKerasPostgreSQLNumPyPower BIpandasTensorFlowData VisualizationETLscikit-learnPyTorchOracle DatabaseC++

Languages

English

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.

Links

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

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