CareerPlan

Senior Semantic Data Specialist (m/w/d)

Stuttgart, BADEN_WUERTTEMBERGRemoteFull-time2026-07-08 → 2026-11-10

Core

Evolving and optimizing ontology models in the OGIT standard for various industries and use cases, including public administration, security, energy, and B2B commerce.

Role type

Senior IC semantic data specialist (ontology engineering)

Builds

AI-powered semantic data platforms (Bardioc) for organizations in public sector, defense, and industry

Domain

Knowledge Graphs / Semantic Web / Enterprise Data

Deliverable

production ML models

Required skills

Ontology Engineering, Knowledge Graphs, Semantic Web standards (RDF, OWL, SPARQL), Graph DBs (Neo4j, Apache Jena, Virtuoso), Python/Java, LLM/RAG integration

Preferred skills

Enterprise Ontology Standards, Complex Domain Modeling, Tooling Evaluation

Responsibilities

Evolve and optimize ontology models in OGIT standard, Design semantic data layer including ER modeling and namespace management, Collaborate with product management and sales to gather requirements, Define data quality and compliance standards, Mentor internal teams, Research new semantic standards and best practices, Document ontology designs

Seniority

Senior, hands-on IC