Senior Semantic Web Implementation Specialist - Contractor / B2B

Our client is a leading supplier of software products in the field of eCustoms internationally. The company supplies software products and IT services to European Union Institutions and Agencies, international organisations and national government administrations. The company employs over 1100 engineers, IT experts and consultants. The group’s staff is multilingual and multinational with in-depth experience in the delivery of services to the government sector worldwide. Currently we are looking for a skilled Senior Semantic Web Implementation Specialist to join the team as a long-term Contractor (B2B) / Freelancer. Based in Luxembourg, working mode: Hybrid. If you are seeking a career in an exciting and dynamic company, where you will offer your services as part of a team of a major European Institution, operating in an international, multilingual and multicultural environment where you can expect real chances to make a difference. Push the boundaries of semantic tech: Advise on state-of-the-art trends (triple stores, SPARQL optimization, semantic search, visualization, scalability, and security); Build & innovate: Develop technical specifications, prototypes, pilots, and robust systemsfrom concept to production; Engineer smarter systems: Design and execute migration strategies, implement ontologies in OWL, and create monitoring solutions; Champion open data: Define strategies that make data accessible, reusable, and impactful; Ensure trust & quality: Lead data testing, quality management, and troubleshooting to keep systems reliable; Empower others: Deliver training, presentations, and clear recommendations for technical and non-technical stakeholders; Secure continuity: Oversee smooth knowledge transfer and handover processes University degree in IT or relevant discipline combined with 7 years of relevant experience; At least 4 years of experience in a software development environment; At least 3 years of experience in RDF and RDF-S; At least 2 years of experience in OWL 2, RDF serialization formats (RDFa, Turtle, RDF/XML and JSON-LD), Triple stores (Virtuoso or equivalent) and SPARQL 1.0/1.1; At least 2 years of experience in Java (Java SE, Java EE, EJB, Applet, etc.) or Python; At least 2 years of experience in Linux; At least 2 years of experience in databases and querying(e.g. Oracle, SQL, Elastic Search, Mongo DB, Neo4j) At least 2 years of experience in Pellet, Apache Jena Reasoner, RDFLib/Saxon, SKOS and SKOS-XL; At least 1 year of experience in version control(e.g. SVN, Bitbucket) and collaborative tools(Jira, Confluence, MS Office 365); At least 1 year of experience in XML; At least 1 year of experience in AWS Cloud Computing services; At least 1 year of experience in Microsoft Windows 7 and higher; At least 1 year of experience in monitoring tools(ELK, Dynatrace); Excellent command of the English language. Youll transform raw data into knowledge people can actually use. Youll solve complex challenges that demand both precision and creativity. Youll become a knowledge leader, shaping the future of how organizations retrieve, share, and understand information.