Data Scientist - European Agency

Altia; Brussel; Sur place; EUR 70 000 - 110 000; Plein temps

Avantages offerts par ce poste

High-impact project

Collaborative work environment

Career Plan

Training Plan

Flexible Remuneration

Résumé du poste

Altia in Belgium is seeking a Senior Data Scientist / Semantic Data Engineer specialized in semantic data, Linked Data, ontology engineering, and knowledge graphs to design and implement data solutions. You will work on semantic data and knowledge graph activities within an international project for European institutions, shaping models, pipelines, and interoperable data architectures.

Strong collaboration with technical and non-technical stakeholders is expected, including delivering validated

Qualifications

• Experience with semantic data design and interoperability.
• Proficiency in building knowledge graphs and semantic models.
• Ability to translate business needs into technical semantic solutions.

Responsabilités

• Design and implement semantic data solutions and ontologies.
• Develop and maintain knowledge graphs and SPARQL queries.
• Ingest and transform data from diverse sources into RDF-based environments.
• Collaborate with stakeholders to communicate semantic concepts clearly.

Connaissances

Semantic data

Linked Data

Ontology engineering

Knowledge graphs

Data modeling

Outils

SPARQL

QLever

Virtuoso

GraphDB

RDF

OWL

SKOS

SHACL

JSON-LD

Turtle

Description du poste

Role

We are looking for a Senior Data Scientist / Semantic Data Engineer specialised in semantic data, Linked Data, ontology engineering, and knowledge graphs, responsible for designing and implementing data solutions based on semantic technologies.

Who We Are

Altia is a high-value digital transformation services company that has undertaken, changed, and reformulated international projects for nearly a thousand clients, leaders in their sectors, who have understood that their businesses can be revolutionized through digitalization. Over its 30 years of experience, it has proven to be a robust company with a future, a capacity for innovation, and adaptability.

The project

You will contribute to semantic data and knowledge graph activities within an international project supporting European institutions and agencies, helping transform heterogeneous information sources into interoperable, reusable, and semantically enriched data solutions.

Semantic Data & Ontologies: Design and align data models and ontologies, develop controlled vocabularies, and manage their lifecycle to ensure consistency and interoperability.

Knowledge Graphs: Design and maintain knowledge graphs, develop and optimise SPARQL queries, and validate semantic data models using SHACL.

Data Ingestion & Transformation: Develop ETL/ELT pipelines to ingest, transform, and publish data from relational databases, XML, JSON, CSV, and APIs into RDF-based environments.

Linked Data Engineering: Implement Linked Data solutions and semantic transformations using established RDF standards and mapping technologies.

Functional & Technical Collaboration: Translate business requirements into technical specifications and communicate complex semantic data concepts and results effectively to both technical and non-technical stakeholders.

Stack

Semantic Web & Linked Data: RDF, RDFS, OWL, SKOS, SHACL, JSON-LD, Turtle, RDF/XML, Linked Data.

Querying & Knowledge Graphs: SPARQL, knowledge graph modelling and optimisation, QLever, Virtuoso, GraphDB.

Ontology Engineering: Ontology alignment, vocabulary design, ontology lifecycle management, semantic modelling.

Data Engineering: Python, ETL/ELT, RML, data ingestion and transformation from relational, XML, JSON, CSV and API sources.

Validation & Interoperability: SHACL, semantic data validation, RDF mappings and Linked Data interoperability.

What we offer

• High-impact project
• Collaborative work environment
• Career Plan
• Training Plan
• Flexible Remuneration

The present job offer is drafted taking into account impartiality and non-discrimination on the grounds of gender, race, ideology, or any other reason. Especially, it takes into account the respect for the current regulations regarding gender equality between women and men (Royal Decree-Law 6/2019).