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# Senior Python Data Engineer Job ID: JP054841

- **Company:** ITProposal
- **Location:** Brussel, Belgium
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Information Engineering, Data Infrastructure, Extract Transform Load (ETL), Data Transformation, Data Migration, Data Transformation Services, Python (Programming Language), Performance Tuning, SAS (Software), SAS/Base, Software Engineering, SQL Databases, Workflow Management Systems, Parquet, Macros, GitHub Copilot, Multi-Agent Systems, Apache Spark, Pandas, Pyspark, Data Pipelines
- **Published:** July 16, 2026
- **Apply:** https://www.adzuna.be/details/5802367193

## About the Role

* 5+ years of experience in Python Data Engineering.
 * Strong expertise in Python, Pandas, Polars, PyArrow, Parquet, Apache Spark/PySpark, and Python performance tuning.
 * Experience with ETL/ELT, data engineering, data quality, schema management, and testing frameworks.
 * Experience using AI-assisted development tools (e.g., GitHub Copilot or similar).
 * Knowledge of agentic workflows, multi-agent systems, workflow orchestration, and AI-driven automation.
 * Familiarity with SAS Base (DATA Step, PROC SQL, Macros, ETL patterns) is a strong advantage.

Languages

 * Active knowledge of Dutch, French, and English.

## Description

We are looking for a Senior Python Data Engineer to support the migration of legacy SAS-based ETL processes to a modern Python data platform using Parquet, PyArrow, Pandas, Polars, and Apache Spark. You will play a key role in developing AI-assisted migration solutions, optimizing agent-driven workflows, and ensuring high-quality, scalable data transformation processes.
Key Responsibilities

 * Design, develop, and validate Python-based ETL and data transformation solutions.
 * Review and optimize AI-generated Python code for performance, quality, and maintainability.
 * Build and enhance data pipelines using Pandas, Polars, PyArrow, Parquet, and PySpark.
 * Improve ETL/ELT processes, data quality, schema management, and performance.
 * Contribute to AI-assisted software development and multi-agent orchestration workflows.
 * Enhance workflow automation, validation processes, and human-in-the-loop quality assurance.
 * Collaborate with architects, data engineers, and SAS experts to support complex migration scenarios.
 * Ensure robust testing, documentation, and operational reliability of migration solutions.


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