Application Cloud Architect – Semantic Graphs (Consultant)

Talent Quanta is seeking a senior Application Cloud Architect (Semantic Graphs) to support a strategic engagement in Luxembourg. The consultant will be embedded within the development team and work closely with a major client’s IT organisation on site, providing architectural leadership and hands-on expertise in semantic technologies, ontologies, and knowledge graphs.

This role is suited to an experienced architect who can bridge data, semantics, and application design in complex enterprise environments.

‍

Key Responsibilities

• Design, develop, and maintain ontologies and knowledge graphs
• Map data sources to ontologies using RML or similar tools
• Implement semantic data pipelines converting data to RDF
• Query and analyse semantic data using SPARQL
• Collaborate with domain experts to capture, model, and formalise knowledge
• Produce and review technical documentation, presentations, and communication materials
• Develop and maintain internal tools and automations supporting operations
• Coordinate and review deliveries, releases, and deployments
• Support technical decision-making and architectural steering
• Work closely with business analysts, developers, project leaders, users, and customers

Required Expertise

• University degree in IT or equivalent professional experience
• 15+ years of professional IT experience
• Strong programming experience with Python and/or JavaScript
• Proven expertise in ontology development (OWL, SHACL)
• Deep knowledge of RDF serialisation formats (Turtle, JSON-LD)
• Advanced proficiency in SPARQL
• Strong experience with semantic data stores (Virtuoso, Apache Jena, GraphDB)
• Experience with semantic data visualisation
• Solid understanding of application and cloud architecture best practices
• Experience with relational databases
• Familiarity with Agile delivery, backlog and issue management
• Knowledge of software lifecycle and release management
• Experience with CI/CD pipelines (GitHub or GitLab) is an asset
• Excellent command of English (spoken and written)

Engagement Details

• Long-term consultancy assignment

‍