Data Engineer (Python + SQL + Sparql + Graph Data)

Full-time Software Architecture & Engineering

Overview

Title: Data Engineer (Python + SQL + Sparql + Graph Data)

Location: Helsinki, Finland (Hybrid)

Employment Contract.

Responsibilities

• Design, develop, and optimize ETL/data pipelines
• Write complex SQL queries (joins, subqueries, CTEs, window functions)
• Perform data transformation, validation, and data quality checks
• Work with large-scale distributed datasets
• Build and manage data ingestion pipelines (APIs, SFTP, Kafka)
• Design and implement graph data models (nodes, edges, relationships)
• Work with RDF data structures and semantic data
• Write and optimize SPARQL queries for graph data retrieval
• Build and maintain knowledge graphs / ontology-based systems
• Automate workflows using Python scripting
• Monitor, troubleshoot, and optimize pipeline performance

Qualifications

• Strong Python (Pandas, Num...