
Semantic Data Engineer
- Role
- Data Engineering
- Experience
- Mid
- Employment
- Full-time
- Company size
- Enterprise
Open to GR only. Set where you work from to check your eligibility.
No BS summary
Semantic/Data Engineer with 3+ years in semantic or data-centric systems. Must know RDF, RDFS, OWL and SPARQL, and be comfortable with TTL, XML, JSON and CSV. Role is based in Athens, Greece.
Core skills
Required skills
Optional skills
Required languages
We are seeking a Semantic / Data Engineer to support a complex platform built around RDF data models, SPARQL queries, and structured datasets. You will be responsible for understanding, maintaining, and evolving the semantic layer of the system, working closely with backend engineers and architects. This role suits a specialist who enjoys data modelling, semantics, and knowledge representation in real-world production systems. What You'll Do: 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; Assist in documenting semantic models, assumptions, and constraints; Participate in troubleshooting data quality and reasoning issues. Requirements 3+ years of experience working with semantic or data-centric systems; Strong knowledge of: RDF, RDFS, OWL SPARQL Experience with: Knowledge graphs or semantic interoperability platforms; Data modelling and ontology design; Comfortable working with structured data formats: TTL, XML, JSON, CSV 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 and/or Apache Airflow; Experience in projects with regulatory or standards-driven constraints. Benefits We believe in rewarding talent and dedication. Here's what you can expect as part of our team: Competitive full-time salary; Private Health Coverage on the Company’s group program; Flexible Working Hours; Top-of-the-Line Tools; Professional Development: Benefit from language courses, specialized training, and continuous learning opportunities; Career Growth: Work with some of the most innovative and exciting specialists in the industry; Dynamic Work Environment: Thrive in a setting that offers challenging goals, autonomy, and mentoring, fostering both personal and company growth. If you want an exciting challenge, work with some of the coolest technologies, and enjoy your time doing it, then join us! Submit your detailed CV in English, quoting reference: ( SDE/08/26 ).) The company employs over 1200 engineers, IT experts, and consultants (around 3% PhD, 41% MSc, and 54% BSc). We design and develop software applications using integrated, state-of-the-art technology. Our current IT projects have a value exceeding 300 million EURO. EUROPEAN DYNAMICS is a renowned supplier of IT services to European Union Institutions, international organizations, European Agencies, and national government Administrations in 40 countries and 4 continents. As part of our dedication to the diversity of our workforce, we are committed to Equal Employment Opportunity without regard for race, colour, national origin, ethnicity, gender, disability, sexual orientation, gender identity, or religion. By submitting an application to this position and by sharing your personal data with ED, you acknowledge and accept its Policy and authorize ED to process your personal data for the purposes of the company's recruitment opportunities, in line with the Policy.
What you'll do
- 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
- Assist in documenting semantic models, assumptions, and constraints
- Participate in troubleshooting data quality and reasoning issues
What they require
- 3+ years of experience working with semantic or data-centric systems
- Strong knowledge of RDF, RDFS, OWL, SPARQL
- Experience with knowledge graphs or semantic interoperability platforms
- Experience with data modelling and ontology design
- Comfortable working with structured data formats: TTL, XML, JSON, CSV
- Ability to analyse existing models and understand implicit domain logic
- Preferred: Experience with triplestores or graph databases
- Preferred: Familiarity with EU data standards or interoperability frameworks
- Preferred: Python scripting for data processing and/or Apache Airflow
- Preferred: Experience in projects with regulatory or standards-driven constraints
- Submit your detailed CV in English, quoting reference: ( SDE/08/26 )
Benefits
- Competitive full-time salary
- Private Health Coverage on the Company’s group program
- Flexible Working Hours
- Top-of-the-Line Tools
- Professional Development: Benefit from language courses, specialized training, and continuous learning opportunities
- Career Growth: Work with some of the most innovative and exciting specialists in the industry
- Dynamic Work Environment: Thrive in a setting that offers challenging goals, autonomy, and mentoring, fostering both personal and company growth
EUROPEAN DYNAMICS supplies software products and IT platforms for government and public-sector use internationally. Its offerings include systems for taxation, courts and judicial bodies, civil and business registries, financial regulatory authorities, electronic forms, and secure software distribution.
What people say about this company
3.5/ 5