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Daniel CastilloDC

Daniel Castillo

Supermalter

Power BI Developer | Reporting & Dashboards

€285/day
5 projects
Madrid, ES
3-7 years

Average response time: 2 hours

Freelancer profile translated to English.
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About Daniel

Power BI and Business Intelligence expert, specializing in the creation of analytical models, dashboards, and end-to-end solutions.

Over 4 years of experience working with Power BI, focusing on DAX, data modeling, Power Query, and performance optimization.

Solid knowledge of SQL and cloud platforms (Azure, AWS, GCP) as a support layer for Power BI solutions, without developing projects outside this environment.

I work exclusively on projects where Power BI is the primary tool.
  • Spanish

    Native or bilingual

  • English

    Basic

Remote only
Primarily works remotely

Experience

  • MAPFRE ESPAÑA
    Malt logoOn Malt
    Senior Power BI Developer
    BANKING AND INSURANCE
    July 2025 - December 2025 (5 months)
    Design and development of reports in Power BI for MAPFRE, focusing on building dashboards for management and the technical team. I implemented DAX measures, calculated tables, and dynamic slicers for policy analysis and operational KPIs.
    The project included data validation and technical documentation.
    PowerBI Power BI DAX Microsoft Power BI DAX Language
  • MAPFRE ESPAÑA
    BI Developer with Power BI
    BANKING AND INSURANCE
    August 2024 - Today (1 year and 10 months)
    Madrid, Spain
    Power BI expert. Development of interactive dashboards and advanced visualizations in Power BI. Creation of optimized data models to maximize performance and efficiency, integrating multiple data sources and ensuring their consistency. Design and development of custom reports, tailored to specific business needs.
    Microsoft Power BI DAX Language SQL PowerBI Data Modeling
  • Supermercados DIA
    Data Analyst and Business Intelligence Analyst
    RETAIL (LARGE RETAILERS)
    February 2020 - April 2022 (2 years and 2 months)
    Madrid, Spain
    Manager of data quality management and supervision throughout the entire project lifecycle, ensuring its accuracy, consistency, and reliability. Implementation of data quality control and validation processes using Business Intelligence and SQL tools, ensuring that the information meets the necessary standards.
    SQL Microsoft Power BI Qlik

Recommendations

Iván BarrioIB
SH
Pablo Negrín JiménezPN
+3
Iván Barrio and 5 other people have recommended Daniel

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Education

  • Master Data Analyst
    Pontia.Tech
    2021
  • Advanced DAX Courses
    Dadata
    2021
    Lenguaje DAX Avanzado

Certifications

Skill set

Categories