Graph Engineer – Contract Role

Location: Melbourne (Hybrid – 3 days onsite per week)
Contract: 6 months (high likelihood of extension)

We are seeking an experienced Graph Engineer to design, build, and optimise RDF-based knowledge graph solutions. This role will focus on semantic modelling, ontology development, and graph database engineering to support scalable querying and data integration across complex domains.

Key Responsibilities

• Design, implement, and optimise RDF graph databases and triple stores

• Build and manage data ingestion pipelines integrating multiple data sources

• Develop scalable ontologies and taxonomies using OWL and RDFS

• Perform semantic mapping to align disparate datasets into a unified knowledge graph

• Ensure data integrity using SHACL or ShEx constraints

• Develop efficient SPARQL queries and graph-based APIs

• Support Graph DevOps practices including automated validation, testing, and CI/CD

• Collaborate with data, analytics, and domain teams to deliver semantic use cases

• Provide technical guidance and mentorship on RDF and knowledge graph technologies

Required Skills & Experience

• Strong expertise in RDF, SPARQL, OWL semantic standards

• 3–5+ years’ experience delivering RDF-based knowledge graph solutions

• Hands-on experience with graph databases/triple stores (e.g., Stardog, Neo4j, Jena, Amazon Neptune)

• Strong background in data integration and ingestion pipelines

• Proficiency with Python and SQL

• Experience with CI/CD tools such as Jenkins, Terraform, Git

• Familiarity deploying graph solutions in AWS, Azure, or Google Cloud

Nice to Have

• Knowledge graph integration with AI/ML solutions

• Experience with Graph-RAG patterns supporting LLMs

• Exposure to time-series or data virtualisation technologies

To be considered for the role click the 'apply' button or for more information about this and other opportunities please contact Ian Cardinal on +617 3472 6580 or email icardinal@paxus.com.au and quote the above job reference number.

Paxus values diversity and welcomes applications from Indigenous Australians, people from diverse cultural and linguistic backgrounds and people living with a disability. If you require an adjustment to the recruitment process, including the application form in an alternate format, please contact me on the above contact details.