We are currently looking for a Expert in Semantic Web Technologies to strengthen the Cronos Europa team. The position is based in Luxembourg. Knowledge engineering and semantic Data specialist. We are seeking an consultant to contribute to the development, maintenance, and management of semantic technologies and knowledge engineering activities. The selected expert will collaborate closely with project teams, domain experts, and external contractors to ensure the quality, consistency, and interoperability of knowledge-based systems. Main tasks and responsibilities The service provider will be responsible for: Knowledge engineering activities: Development and maintenance of ontologies and knowledge graphs. Mapping of data sources to ontologies using Rml or equivalent tools. Implementation of semantic data pipelines to convert data to RDF. Querying and analysing semantic data using SPARQL. Collaboration with domain experts to capture and model knowledge. Technical and documentation support: Review and preparation of technical documentation, communication materials, and presentations. Development and maintenance of internal tools and automations to support operations. Coordination and review of software deliveries, releases, and deployments. Project support: Assistance with technical decision-making and project steering. Interaction with business analysts, customers, users, project leaders, and developers. Required knowledge and skills Essential: Strong skills in Data Modelling and Data Analysis. Programming proficiency in Python and/or JavaScript. Ability to adapt to evolving technologies in Semantic Web and Interoperability domains. Proven capability to write clear, structured, and high-quality technical documentation. Excellent analytical and problem-solving skills. Strong communication skills, both with technical and non-technical audiences. Desirable (considered an asset): Experience with Ontology languages (Owl, Shacl, etc.) and related tools. Knowledge of RDF serialization formats (Turtle, JSON-LD, etc.). Familiarity with semantic data stores (Virtuoso, Apache Jena, GraphDB, etc.). Understanding of Linked Data principles and best practices. Why cronos group? We'll propose you: An attractive salary package A good work-life balance environment The assurance of working in cutting-edge technologies in an entrepreneurial spirit The opportunity to develop your skills thanks to tailor-made training courses according to your needs A good job in a friendly place. If you wish to integrate a dynamic structure on a human scale while working with the latest technologies, don't wait anymore and join Cronos! Cronos Europa is an IT and digital communications company uniquely dedicated to serving the European institutions, agencies and bodies. From the European Union to EUROCONTROL, we partner with a range of supranational and interinstitutional authorities. Our mission is to arm them with the tools they need to thrive in the digital age. Every aspect of our organisation is designed to complement their capabilities - from our people to our processes and our premises. Our brand combines the expertise of former companies Cronos International and C-Dev, with the creative skills of Inspiiro and the breadth of capabilities of the Cronos Group. Today, Cronos Europa employs over 1,000 people in offices across Belgium, Luxembourg and the Netherlands, serving institutions across diverse framework contracts. Cronos Europa is part of the Cronos Group, one of the largest IT service providers in the Benelux, employing over 8,000 people across 200 competence centres. By leveraging the Group's resources, Cronos Europa can help clients extract value from new and emerging technologies, for everything from Artificial intelligence to Zg Quantum.