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Jessica PiñasJP

Jessica Piñas

Analyst engineer | Data engineer | AI developer

€350/day
Madrid, ES
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Jessica

Freelance Data Analyst | Power BI · SQL · Python · Excel

I am available for projects in Spanish and English.

I help companies and teams understand their data, automate repetitive tasks, and make decisions with clear, visual, and actionable reports.

Do you need to transform a chaotic Excel, build a dashboard, or extract insights from your data? I'm here to help.
  • Spanish

    Native or bilingual

  • English

    Fluent

Can work on-site
Madrid (up to 50km)

Experience

  • Grupo Oesía
    Data engineer | AI developer
    DIGITAL AND IT
    June 2025 - Today (1 year)
    Madrid, Spain
    Development of AI-powered automation solutions using Python and machine learning in Azure and Databricks environments, supporting large-scale digital transformation initiatives.

    Building scalable data ingestion, transformation, and cleaning pipelines in Databricks (Spark), preparing high-quality datasets for Retrieval-Augmented Generation (RAG) systems.

    Designing and deploying end-to-end AI-based workflows to optimize data migrations and modernize legacy systems.

    Fine-tuning open-source language models (LLMs) using QLoRA, utilizing virtual machines on Google Cloud Platform (GCP) for scalable training and deployment.
    Microsoft Azure Azure DevOps Databricks Retrieval-Augmented Generation (RAG) LLM
  • Ikea
    Analyst engineer
    June 2024 - Today (2 years)
    Design and optimization of extraction, transformation, and analysis processes for large volumes of data in BigQuery, enabling strategic data-driven decision-making for the application.

    Development of interactive dashboards and reports in Power BI, defining and monitoring key KPIs and facilitating the communication of actionable insights to technical and business stakeholders.

    Building and maintaining scalable data pipelines with DBT, applying best practices in modeling, testing, and documentation to ensure data quality and reliability.

    Coordination and tracking of initiatives through Jira, collaborating closely with engineering and product teams in agile environments to align technical deliverables with business objectives.
  • MCP Insight
    Data and Performance Analyst
    January 2020 - May 2024 (4 years and 4 months)
    • Performance evaluation and trend analysis of different projects through Power BI.
    ◦ Creation of dashboards and complex data models, using the DAX language.
    ◦ Design, development, and maintenance of metrics, reports, analyses, and dashboards to drive key business decisions.
    • Data ingestion and extraction from various sources (MSQL server, Excel)
    • Creation and monitoring of monthly and quarterly team KPIs.
    • Recognition and adoption of best practices in reporting and analysis: data integrity, test design, validation, and documentation.

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Education

  • Advanced Artificial Intelligence
    University of Malaga
    2024
    Inteligencia Artificial Avanzada
  • Coding & Programming
    Samsung Innovation Campus – University of Malaga
    2022
    Coding & Programming

Skill set

Categories