Development, operation and continuous further development of enterprise-wide knowledge graphs
Design and implementation of ontologies in the domains of tax, law and finance
Development of knowledge-graph-driven applications and services
Integration and transformation of existing data silos into semantic data models
Development and establishment of quality assurance and validation methods as well as modeling guidelines, best practices and documentation for ontologies and knowledge graphs
Monitoring and optimization of query performance and system stability
Advancing company-wide information management through knowledge-graph technologies
Connecting knowledge graphs to AI
and LLM-based systems to support intelligent applications
Close collaboration within a team of Data Scientists, Data Architects and MLOps engineers

Very good German language skills (C1) in spoken and written form, and good English skills
Extensive practical experience with Semantic Web technologies (ontologies, RDF, SPARQL, SHACL)
Several years of experience in developing and operating knowledge graphs or semantic data platforms
Strong programming skills, preferably in Python and/or Java; other languages and ecosystems are also possible
Experience with Semantic Web libraries and frameworks (e.g. RDFlib, RDF4J, Apache Jena)
Experience in data engineering (ETL processes, data pipelines, e.g. RML, Kafka)
Confident handling of databases, data modeling and SQL
Experience with quality assurance, validation and performance optimization of knowledge graphs (e.g. SHACL, query tuning)

Innovative, modern and challenging working environment with flat hierarchies and the opportunity to contribute your individual strengths
Long-term career prospects
Attractive compensation
Flexible working hours and home office
Modern workplaces in cool offices where we also care about your health, e.g. ergonomic chairs, height-adjustable desks and fresh fruit
High-quality hardware of your choice
Annual training budget that you can shape yourself (from specialist seminars to participation in international conferences)
Numerous benefits: VGN company subscription (subsidy for public transport), JobRad (company bike), childcare allowance, Corporate Benefits (shopping discounts), sports discounts (e.g. Compustore, Urban Sports) and more
Subsidy for company pension scheme / capital-forming benefits (VWL)
Beverages, muesli, fruit at the workplace

Knowledge Engineer

Key skills