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I am a Data Engineer and a PySpark Developer certified by Databricks with 3 years of experience. I have a special interest in technologies such as SQL, Spark, Python, Azure, and AWS. I've worked on several projects that involve implementing large-scale data processing solutions and optimizing data pipelines to improve their efficiency. I enjoy tackling complex challenges and continuously learning to enhance my skills in the evolving field of data engineering.…I am a Data Engineer and a PySpark Developer certified by Databricks with 3 years of experience. I have a special interest in technologies such as SQL, Spark, Python, Azure, and AWS. I've worked on several projects that involve implementing large-scale data processing solutions and optimizing data pipelines to improve their efficiency. I enjoy tackling complex challenges and continuously learning to enhance my skills in the evolving field of data engineering.

Samuel Marcos Fernández

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I am a Data Engineer and a PySpark Developer certified by Databricks with 3 years of experience. I have a special interest in technologies such as SQL, Spark, Python, Azure, and AWS. I've worked on several projects that involve implementing large-scale data processing solutions and optimizing data pipelines to improve their efficiency. I enjoy tackling complex challenges and continuously learning to enhance my skills in the evolving field of data engineering.…I am a Data Engineer and a PySpark Developer certified by Databricks with 3 years of experience. I have a special interest in technologies such as SQL, Spark, Python, Azure, and AWS. I've worked on several projects that involve implementing large-scale data processing solutions and optimizing data pipelines to improve their efficiency. I enjoy tackling complex challenges and continuously learning to enhance my skills in the evolving field of data engineering.

Available to hire

I am a Data Engineer and a PySpark Developer certified by Databricks with 3 years of experience. I have a special interest in technologies such as SQL, Spark, Python, Azure, and AWS. I’ve worked on several projects that involve implementing large-scale data processing solutions and optimizing data pipelines to improve their efficiency. I enjoy tackling complex challenges and continuously learning to enhance my skills in the evolving field of data engineering.

Skills

Experience Level

Expert

Expert

Expert

Expert

Language

English

Advanced

Spanish; Castilian

Fluent

Work Experience

Data Engineer at NTT Data

October 1, 2022 - September 30, 2023

Migrated legacy ETL processes from Pentaho to PySpark, improving scalability of data workflows. Worked with Hadoop and Hive for big data storage and querying. Automated recurring workflows using Apache Airflow, reducing manual operations. Developed Python scripts and pipelines for data integration and transformation.

Junior Data Engineer at Dyvenia (VELUX)

September 1, 2023 - April 30, 2024

Designed and supported ETL data pipelines using PySpark in Databricks for large-scale data processing. Managed cloud data workflows using Azure Data Factory and contributed to ETL processes in AWS environments.

Data Engineer at Grupo Ayesa (BBVA)

August 1, 2024 - July 31, 2025

Developed and maintained data pipelines using PySpark in Databricks for efficient processing of large datasets for analytics. Worked with Snowflake and PostgreSQL for data storage and querying.

Data Engineer at Santander / W2M

July 1, 2025 - December 31, 2025

Developed and maintained data pipelines using PySpark in Databricks, enabling efficient processing of large datasets for analytics. Built data transformation models with DBT to deliver structured, analytics-ready data.