Data Engineer (Python, SQL, ETL)
TECDATA ENGINEERING Spain
IT Services and IT Consulting · 201-500 employees
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About the role
Develop data solutions using pure code, specifically Python and SQL, without relying on visual ETL tools. Responsibilities include processing and orchestrating data, managing large volumes in PostgreSQL, and performing database tuning.
What they look for
Requirements
Requires 4-5 years of experience with strong proficiency in Python scripting and advanced SQL, including window functions and query optimization. A solid foundation in data warehousing, dimensional modeling, and open-source orchestration tools like Airflow is essential.
Full description
Buscamos un Data Engineer muy técnico y hands-on, con 4-5 años de experiencia, acostumbrado a desarrollar soluciones de datos mediante código puro, principalmente Python y SQL.
El entorno está fuertemente orientado a open source, sin herramientas ETL visuales. Se trabajará desarrollando scripts desde cero, procesando y orquestando datos, con PostgreSQL y StarRocks como tecnologías clave.
🔹 Requisitos imprescindibles
- Python: scripting desde cero, procesamiento e ingesta de datos, manejo de archivos y memoria, estructuras de datos y gestión de errores.
- SQL avanzado: joins, agregaciones, filtros, detección de duplicados, registros huérfanos y Window Functions.
- PostgreSQL: grandes volúmenes, creación y optimización de índices, EXPLAIN y tuning.
- ETL/ELT: desarrollo mediante código, cargas incrementales/totales, gestión de errores y controles de calidad del dato.
- Base sólida en Data Warehousing y bases de datos relacionales.
🔹 Valorable
- StarRocks, ClickHouse o Apache Doris.
- Modelado dimensional: hechos, dimensiones, estrella, OLTP vs OLAP.
- Git y orquestación con Airflow, Cron u otras herramientas open source.
- Conceptos básicos de Power BI.
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