About This Opportunity: Ontology Expert - Remote (Toronto)
NTT is currently seeking a Ontology Expert - Remote (Toronto) to join their team in Toronto.
This position offers an excellent opportunity for motivated individuals looking to advance their career.
Education Requirements
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No specific education requirements
Required Experience
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ON), Canada (CA).
Role Summary
We are seeking an experienced Ontology Expert to design, develop, and govern healthcare ontologies and semantic models that power AI‑driven and agentic healthcare solutions. This role focuses on enabling interoperability, reasoning, knowledge representation, and explainable AI across clinical and healthcare enterprise systems.
Day to Day job Duties:
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Design, build, and maintain healthcare ontologies, taxonomies, and semantic models.
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Define domain vocabularies, concepts, and relationships for AI‑driven and agentic solutions.
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Support knowledge representation for AI agents, clinical decision‑support, and intelligence systems.
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Collaborate with clinicians, data scientists, and AI engineers to translate domain knowledge into formal semantic models.
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Govern ontology lifecycle, versioning, documentation, and semantic consistency.
Healthcare Ontology Semantic Modeling
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Develop ontologies using OWL, RDF, and SKOS standards.
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Apply healthcare terminologies including SNOMED CT, ICD‑10, LOINC, and RxNorm.
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Enable semantic interoperability across EHRs and healthcare data sources.
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Support reasoning, inference, and rule‑based logic for AI systems.
AI Agentic Solution Support
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Enable AI and GenAI systems with structured healthcare knowledge.
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Support agentic workflows, decision models, and explainable AI (XAI) outputs.
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Collaborate on RAG pipelines and knowledge graph integration for LLM‑based systems.
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Ensure semantic accuracy, safety, and clinical relevance of AI outputs.
Basic Qualifications
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Bachelor’s or Master’s degree in Computer Science, Health Informatics, Data Science, Semantic Web, or related field.
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4–8+ years of experience in ontology development or semantic modeling, preferably in healthcare.
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Strong understanding of US healthcare data and terminology.
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Hands‑on experience with ontology languages, standards, and modeling techniques.
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Proficiency in Python for ontology processing, validation, or AI integration.
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Experience working with cross‑functional AI and clinical teams.
Nice to Have
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Experience with knowledge graphs and graph databases.
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Exposure to LLMs, GenAI, and agentic AI architectures.
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Familiarity with FHIR‑aligned semantic models.
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Experience in payer / managed care environments (Medicaid, Medicare).
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Cloud platform experience (AWS, Azure, or GCP).
About NTT DATA
NTT DATA is a $30+ billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world’s leading AI and digital infrastructure providers, with unmatched capabilities in enterprise
Position DetailsKey Responsibilities
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Effectively perform assigned job duties
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Maintain safety and cleanliness in the workplace
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Work effectively with team members
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Follow company policies and procedures
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Perform tasks according to quality standards
Qualifications
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Reliability and punctuality
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Ability to work independently and in a team
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Strong work ethic and positive attitude
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Ability to follow instructions
Why Join NTT?NTT offers a supportive work environment in Toronto, where employees can grow and develop their skills. This Ontology Expert - Remote (Toronto) position provides the opportunity to work with a dedicated team and contribute to meaningful work.
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