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Martin L.ML

Martin L.

Data Engineer | Snowflake | PL/SQL | Data Modeling

€180/day
Palma de Mallorca, ES
0-2 years

Average response time: 1 hour

About Martin

I’m a self-motivated data professional, passionate about what I do. I take initiative, meet deadlines, and always focus on solving my clients’ problems. Thanks to that, I’ve built a strong reputation in my company, and now I’m working to do the same in the freelance community.

I’m comfortable working with both technical teams and business roles. I make sure to understand the needs behind each project, communicate clearly, and deliver effective and scalable solutions with business value.

My experience covers the full data pipeline: I’ve worked on both ETL and ELT processes, data modeling (Star Schema and Data Vault), and data visualization. I’ve designed pipelines on-prem and in the cloud, with a current focus on Snowflake. I’ve also worked on metadata and data catalogs, helping to structure back-end systems of a custom Data Lake platform.

Some of my key contributions include:

- Designing and optimizing data pipelines

- Creating reusable templates for dimension tables

- Replicating data models across environments

- Working with metadata for better data governance

I’m reliable, curious, and always open to learning. I’m actively looking for projects where I can contribute with what I know, while continuing to grow and provide data-driven value.

Don’t hesitate to reach out if you think I can help with your data challenges!
  • Spanish

    Native or bilingual

  • English

    Fluent

Can work on-site
Palma de Mallorca (up to 50km)

Experience

  • DXC Technology
    Data Engineer | INDITEX
    February 2025 - Today (1 year and 4 months)
    Santiago de Compostela, Spain
    Pipeline Development: Building Star Schema models in Snowflake within a Data Mesh architecture.

    CI/CD & DevOps: Implementing CI/CD workflows with Azure DevOps and Git for seamless deployment.

    Automation: Developing templates for dimension creation, streamlining data modeling processes.

    Data Quality: Ensuring consistency and uniqueness through automated validation checks.
  • DXC Technology
    Data Engineer and Product Owner | SERGAS
    May 2024 - February 2025 (9 months)
    Santiago de Compostela, Spain
    Stakeholder Management: Acted as the primary point of contact for the clinics domain (patient-related systems), translating business needs into technical solutions.

    Pipeline Development & Maintenance: Maintained ETLs in IBM DataStage for Oracle databases, developed and debugged Oracle procedures, and resolved issues in SAP Business Objects reports.

    Team Leadership: Guided, taught, and scheduled tasks for two junior team members. Supervised and guided an internship team on a DataHub based project, improving skills in leadership, project planning, and technical mentoring.

    Process Optimization: Enhanced and automated data lake metadata tasks to improve efficiency and replicability across systems.
  • DXC Technology
    Data Engineer | SERGAS
    October 2022 - May 2024 (1 year and 7 months)
    Santiago de Compostela, Spain
    Data Pipeline Design: Developed SQL pipelines on a custom data lake platform to clean, transform, and integrate healthcare data from laboratory and pharmacy domains.

    Modeling & Architecture: Implemented Data Vault models for integration layers and developed data marts and SQL templates for dimension creation.

    Metadata Management: Optimized and automated ingestion processes and metadata replication across multiple databases.

    Collaboration with business roles: Held regular meetings with cross-functional teams and stakeholders to align technical development with business needs.

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Education

  • Máster Universitario en Ciencia de Datos, Matemáticas e informática
    Universitat Oberta de Catalunya
    2023
    Máster Universitario en Ciencia de Datos, Matemáticas e informática
  • Grado, Matemáticas
    Universitat de les Illes Balears
    2021
    Grado, Matemáticas

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