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Ontology Engineer (Knowledge Graph Engineer Consultant)
Location: London Role Type: Permanent Work Setup: Hybrid – 3 days in the office
About the Company
We are part of Robert Walters, the world’s most trusted talent solutions business. Globally, we offer recruitment, outsourcing, and talent advisory services for businesses of any size, connecting people with diverse skills, ambitions, and backgrounds.
About the Role
Robert Walters is seeking an exciting new opportunity for a Knowledge Graph Engineer Consultant to join our team.
As a Consultant, you’ll enjoy:
- A permanent position with Robert Walters
- Deployment on client projects across organisations
- Ongoing training and professional development
- Work within a global business delivering top-tier services to blue-chip clients
What You’ll Do
You will design and deliver a proof-of-concept knowledge graph for investment fund data at one of the world’s largest asset managers.
Key tasks:
- Encode business rules, regulatory constraints, and identifier relationships into machine-readable ontologies, automating processes across thousands of funds across six global markets.
- Develop an investment fund ontology (in OWL 2/RDF/Linked Data) modelling the hierarchy:
Fund > ShareClass > Listing > Security
- Supporting 73+ identifier types (e.g., ISIN, SEDOL, CUSIP, LEI, Bloomberg Ticker).
- Create SHACL validation shapes to enforce business rules (e.g., "A US-domiciled ETF listing must have a valid ISIN").
- Build SKOS concept schemes for harmonised vocabulary across internal systems.
- Design data integration pipelines mapping relational data into RDF triples using R2RML, rdflib, or similar tools.
- Implement an API layer for programmatic graph data access.
- Generate automated governance reports highlighting data quality gaps and inconsistencies.
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What You Bring
Essential Requirements: ✔ 5+ years’ experience deploying RDF/OWL ontologies in production environments. ✔ Proficiency in SHACL for constraint validation and governance. ✔ Advanced SPARQL 1.1 query skills. ✔ Experience with enterprise triple stores (e.g., TopBraid, GraphDB (Ontotext), Stardog, RDFox, Amazon Neptune (RDF mode)). ✔ Strong Python or Java skills for data transformation and pipeline orchestration. ✔ Familiarity with financial identifiers (ISIN, SEDOL, CUSIP, LEI, Bloomberg, ESIS) and their importance. ✔ Understanding of data governance principles.
Preferred Experience: 🔹 Financial services domain knowledge (e.g., fund data, securities master, regulatory compliance). 🔹 Experience with FIBO or similar financial ontologies. 🔹 Familiarity with TopBraid EDG/GraphWise platforms. 🔹 SKOS for vocabulary management. 🔹 Experience with R2RML/RML for relational-to-RDF mapping. 🔹 Familiarity with ontology design patterns, modular schema design, and Git-based versioning workflows. 🔹 Experience with large-scale data modelling across multi-market environments. 🔹 Exposure to rules engines or deterministic AI (e.g., SHACL-based reasoning). 🔹 Ability to deliver within Agile frameworks in regulated industries.
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What’s Next?
If this role interests you, please apply now. Successful candidates will be contacted directly by a recruiter for further discussion.
Diversity & Inclusion
We are committed to equal opportunities and supporting an inclusive recruitment process. If you require adjustments, our Adjustment Concierge Service can assist you.
Contact: adjustments@robertwalters.com
Note: This position is recruited on behalf of our client through Resource Solutions Limited (trading as Robert Walters), which acts as an employment business and agency.
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