Semantic / Data Engineer (RDF, SPARQL)

About the role

A European Dynamics team in Athens is looking for a Semantic / Data Engineer to support a complex platform built around RDF data models, SPARQL queries and structured datasets. You will understand, maintain and evolve the semantic layer of the system, working closely with backend engineers and architects. The role suits someone who enjoys data modelling, semantics and knowledge representation in real-world production systems.

Key responsibilities

• Analyse and maintain RDF/TTL data models and vocabularies
• Develop, optimise and maintain SPARQL queries
• Support data ingestion, transformation and validation workflows
• Ensure consistency and correctness of semantic data across the platform
• Collaborate with backend engineers to integrate semantic logic into application flows
• Help document semantic models, assumptions and constraints
• Take part in troubleshooting data quality and reasoning issues

Required profile

• 3+ years of experience with semantic or data-centric systems
• Ability to analyse existing models and understand implicit domain logic
• Nice to have: experience with triplestores or graph databases, familiarity with EU data standards or interoperability frameworks, Python scripting for data processing or Apache Airflow, and experience in projects with regulatory or standards-driven constraints

Required skills

• RDF, RDFS, OWL
• SPARQL
• Structured data formats: TTL, XML, JSON, CSV
• Nice to have: knowledge graphs, ontology design, triplestores or graph databases

What we offer

• Competitive full-time salary
• Private health coverage through the company's group programme
• Flexible working hours
• Top-of-the-line tools
• Language courses, specialised training and continuous learning
• Career growth with mentors and autonomy

Applicants submit a detailed CV in English quoting reference SDE/11/26.