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Ontology Engineer
Job Location:
Job Location:
New York City, NY - USA
Monthly Salary:
Not provided by the employer
Monthly Salary:
Posted:
2 June 2026 (30+ days ago)
Posted:
Application Deadline:
30 August 2026
Application Deadline:
Vacancies:
1 Vacancy
Vacancies:
Job Summary
Role - Ontology Engineer
Employment Type: FTC / FTE
Location: Preferred local to NY/NJ (Open to other locations)
Employment Type: FTC / FTE
Location: Preferred local to NY/NJ (Open to other locations)
Role Summary
We are seeking an experienced Ontology Engineer to design and build the OntoSphere Knowledge Graph (KG) the canonical enterprise model integrating SOPIA ISO 20022 FIBO PROV-O and Client PayOps ontologies.
This is a critical front-loaded role with the highest impact during the initial phases (P0-P1) of ontology design and consensus building. The successful candidate will define ontology standards establish semantic relationships and create a scalable knowledge graph architecture that supports banking and payments operations. Following implementation the role transitions into consultation governance and maintenance activities during hyper-care and ongoing enhancements.
We are seeking an experienced Ontology Engineer to design and build the OntoSphere Knowledge Graph (KG) the canonical enterprise model integrating SOPIA ISO 20022 FIBO PROV-O and Client PayOps ontologies.
This is a critical front-loaded role with the highest impact during the initial phases (P0-P1) of ontology design and consensus building. The successful candidate will define ontology standards establish semantic relationships and create a scalable knowledge graph architecture that supports banking and payments operations. Following implementation the role transitions into consultation governance and maintenance activities during hyper-care and ongoing enhancements.
Key Responsibilities
Design and develop enterprise-scale ontologies and semantic data models.
Build and maintain Knowledge Graph solutions using RDF OWL and graph databases.
Create ontology mappings and alignments across multiple banking and payments standards.
Develop and optimize SPARQL queries including federated query patterns.
Define SHACL constraints and validation frameworks to ensure ontology quality.
Collaborate with business stakeholders architects and SMEs to establish ontology consensus.
Model banking and payments concepts using standards such as FIBO and ISO 20022.
Implement ontology governance versioning and documentation practices.
Support reasoning inference provenance tracking and semantic interoperability initiatives.
Develop integration solutions using Python or Java-based semantic technologies.
Design and develop enterprise-scale ontologies and semantic data models.
Build and maintain Knowledge Graph solutions using RDF OWL and graph databases.
Create ontology mappings and alignments across multiple banking and payments standards.
Develop and optimize SPARQL queries including federated query patterns.
Define SHACL constraints and validation frameworks to ensure ontology quality.
Collaborate with business stakeholders architects and SMEs to establish ontology consensus.
Model banking and payments concepts using standards such as FIBO and ISO 20022.
Implement ontology governance versioning and documentation practices.
Support reasoning inference provenance tracking and semantic interoperability initiatives.
Develop integration solutions using Python or Java-based semantic technologies.
Required Qualifications
Bachelors or Masters degree in Computer Science Information Systems Data Engineering or a related field.
4 years of experience working with Knowledge Graph technologies.
4 years of hands-on experience with RDF OWL and ontology modeling.
4 years of experience writing and optimizing SPARQL queries.
2 years of experience with SHACL constraint validation and shape design.
5 years of experience in Python or Java development.
Experience with ontology engineering methodologies and domain modeling.
Knowledge of banking ontologies such as FIBO ISO 20022 FRO or demonstrated ability to learn complex financial ontologies quickly.
Bachelors or Masters degree in Computer Science Information Systems Data Engineering or a related field.
4 years of experience working with Knowledge Graph technologies.
4 years of hands-on experience with RDF OWL and ontology modeling.
4 years of experience writing and optimizing SPARQL queries.
2 years of experience with SHACL constraint validation and shape design.
5 years of experience in Python or Java development.
Experience with ontology engineering methodologies and domain modeling.
Knowledge of banking ontologies such as FIBO ISO 20022 FRO or demonstrated ability to learn complex financial ontologies quickly.
Required Technical Skills
Knowledge Graph Databases: Neo4j Stardog GraphDB AWS Neptune Apache Jena
RDF RDF Schema (RDFS) OWL
SPARQL Query Development & Optimization
SHACL Validation Frameworks
Python (rdflib owlready2) or Java (Apache Jena)
Ontology Engineering & Semantic Modeling
Schema Design and Domain-Driven Modeling
Knowledge Graph Architecture
Knowledge Graph Databases: Neo4j Stardog GraphDB AWS Neptune Apache Jena
RDF RDF Schema (RDFS) OWL
SPARQL Query Development & Optimization
SHACL Validation Frameworks
Python (rdflib owlready2) or Java (Apache Jena)
Ontology Engineering & Semantic Modeling
Schema Design and Domain-Driven Modeling
Knowledge Graph Architecture
Preferred Skills
Wikidata or DBpedia integration experience
Ontology alignment and mapping tools (LIMES Silk)
PROV-O provenance modeling
Reasoning engines such as Pellet HermiT or ELK
Property Graph technologies (Cypher Gremlin)
Apache Jena Fuseki or GraphDB Workbench
RDF-star (RDF*) implementations
Knowledge Graph Embeddings (TransE ComplEx RGCN)
Wikidata or DBpedia integration experience
Ontology alignment and mapping tools (LIMES Silk)
PROV-O provenance modeling
Reasoning engines such as Pellet HermiT or ELK
Property Graph technologies (Cypher Gremlin)
Apache Jena Fuseki or GraphDB Workbench
RDF-star (RDF*) implementations
Knowledge Graph Embeddings (TransE ComplEx RGCN)
Certifications (Preferred)
OMG Certified Expert in BPM (CEBPM)
Stardog Certification
Semantic Web or Knowledge Graph related certifications
OMG Certified Expert in BPM (CEBPM)
Stardog Certification
Semantic Web or Knowledge Graph related certifications
Soft Skills
Strong communication and stakeholder management skills
Ability to facilitate ontology consensus discussions across business and technical teams
Collaborative and iterative problem-solving approach
Strong documentation and governance mindset
Comfortable working with ambiguity and evolving business requirements
Domain Experience
Banking and Financial Services
Payments and Transaction Processing
Financial Data Standards and Regulatory Frameworks
Strong communication and stakeholder management skills
Ability to facilitate ontology consensus discussions across business and technical teams
Collaborative and iterative problem-solving approach
Strong documentation and governance mindset
Comfortable working with ambiguity and evolving business requirements
Domain Experience
Banking and Financial Services
Payments and Transaction Processing
Financial Data Standards and Regulatory Frameworks
