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Dimitrios DiamantidisDD

Dimitrios Diamantidis

Data Engineer / Scientist

€720/day
Utrecht, NL
3-7 years

Average response time: 1 hour

About Dimitrios

  • Greek

    Native or bilingual

  • English

    Native or bilingual

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

Experience

  • INSZO Instituut voor Zorgoptimalisatie,
    Data Engineer / Scientist
    February 2025 - January 2026 (11 months)
    Utrecht, Netherlands
    Project-based role with DataStudent supporting the Instituut voor Zorgoptimalisatie (INSZO) in modernizing their data infrastructure. Migrated legacy SAS data science scripts to SparkR within Azure Synapse Analytics, delivering the project successfully.

    • Translated complex SAS workflows, including data imputation, feature engineering, and statistical modeling (regression, clustering, classification) into SparkR and SQL, ensuring reproducibility and accuracy across platforms.

    • Leveraged SparkR/Pyspark and SQL to efficiently manage and transform large-scale healthcare datasets in a cloud-based environment, optimizing scripts for performance and scalability.

    · Collaborated closely with INSZO's Data Science team to validate methodologies and align transformation logic with clinical and research objectives.

    . Gained valuable expertise in the comparative use of statistical functions and data operations across programming languages, with a focus on healthcare data applications.
    Microsoft Azure Pyspark Big Data Validation
  • Upwork freelancer,
    Web Scraping Developer
    September 2023 - December 2024 (1 year and 3 months)
    • Build real-time data solutions that improve automation, streamline data collection, and deliver actionable insights tailored to client needs.

    · Specialize in data extraction and automation, utilizing Python (Selenium, Playwright, BeautifulSoup) and APIs for both dynamic and static web scraping.
    Python API Scripting
  • Vini,
    Data Expert
    September 2024 - December 2024 (3 months)
    Amstelveen, Netherlands
    . Optimized data workflows and developed automated data extraction solutions for a procurement platform.
    . Enhanced data clarity using Python and deep learning (CNN) to clean and standardize data for analysis.
    . Build an email scraper with Python (Pandas, BeautifulSoup, nltk, Regex) to automate vendor offer consolidation, transforming unstructured data into actionable insights.
    Python Machine learning Docker Git

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Education

  • MSc Applied Data Science
    Utrecht University
    2024
  • BSc Business Administration
    UNIVERSITY OF MACEDONIA
    2020

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