Senior Python Data Engineer (I09995)

About the Position

We are seeking a Senior Python Data Engineer (I09995) to join our team in Brussels, Belgium for a migration project from 03/08/2026 to 31/12/2026. This role involves supporting the migration of legacy SAS-based ETL workloads to a modern Python-based data platform leveraging technologies such as Parquet and Spark.

Responsibilities

• Design, develop, and validate Python-based data transformation solutions.
• Review and optimize AI-generated Python code.
• Ensure code quality, maintainability, performance, and operational robustness.
• Support complex migration cases where automated generation requires refinement.
• Contribute to data quality, schema management, and Parquet optimization.
• Support PySpark-based implementations where appropriate.

Requirements

Core Skills

• Python & Data Engineering

  • 5+ years of hands-on Python development.
  • Strong knowledge of: Pandas, Polars, PyArrow, Parquet, Testing frameworks.
  • Experience with: Data engineering, ETL/ELT processes, Data quality controls, Schema management.
  • Experience with PySpark is a strong asset.

• AI-Assisted Development & Agentic Systems

  • Experience with AI-assisted software development (GitHub Copilot and similar tools).
  • Experience with: Agentic workflows, Multi-agent systems, Agent harness engineering, Workflow orchestration, Human-in-the-loop validation.

• SAS (Asset)

  • Experience with SAS or the ability to understand legacy SAS programs is a strong asset.
  • Understanding of: DATA steps, PROC SQL, SAS macros, ETL processing patterns.
  • Ability to collaborate effectively with SAS analysts and subject-matter experts during migration and validation activities.

Languages

• Dutch: Active knowledge
• French: Active knowledge
• English: Active knowledge

Nice to Have

• Experience with AI and Python.
• Junior skills in SAS BASE.

We Offer

• Competitive salary
• Opportunity to work on a cutting-edge migration project
• Collaborative work environment with data engineers, architects, and SAS specialists

About the Company

ProUnity is a company committed to digital transformation and innovation. We are looking for passionate and skilled professionals to join our team and contribute to our mission.

Apply now to be part of our team and help us build the future of data engineering.