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doriel/README.md

Hi, I'm Doriel 👋

Data Engineer building batch pipelines and analytics platforms in production. I work across the full path from raw sources to tested, modeled data in the warehouse, and lately I focus on using LLMs to turn unstructured documents into reliable tables.

Based in Porto, Portugal. Open to remote roles.


What I work with

Cloud & platforms: AWS, Databricks, Delta Lake, Unity Catalog Transformation & orchestration: dbt, Airflow, Spark, SQL Languages: Python, SQL Focus areas: data modeling, data quality and testing, AI-assisted document extraction


Featured projects

fda-510k-predicate-lineage Extracts predicate device lineage from FDA 510(k) summary PDFs with AI on Databricks, joins it with openFDA data, and models and tests the result with dbt.

iberian-energy Detects price decoupling between Portugal and Spain in the MIBEL day-ahead market, attributes it to interconnection constraints, and explains each event with sourced evidence.


Get in touch

LinkedIn · doriel.fonseca@outlook.com

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  1. iberian-energy iberian-energy Public

    Detects price decoupling between Portugal and Spain in the MIBEL day-ahead market, attributes it to interconnection constraints, and explains it with sourced evidence.

    Python

  2. fda-510k-predicate-lineage fda-510k-predicate-lineage Public

    AI extraction of predicate device lineage from FDA 510(k) PDFs on Databricks, modeled and tested with dbt.

    Python