Application Cloud Architect – Semantic Graphs (Consultant)

Reference number:
4276
Created on:
January 15, 2026
TalentQuanta
€50 day rate
Freelance or B2B

Job description

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

Job overview

Job location:
Luxembourg
Job type:
On site
Contract type:
Freelance or B2B
Work hours:
Full-time
Contract length:
Studies:
Experience level:
Senior
Offered salary:
€50 day rate

Apply now to:

Max file size 10MB.
Uploading...
fileuploaded.jpg
Upload failed. Max size for files is 10 MB.
Oops! Something went wrong while submitting the form.