Senior Ontologist (AI)

Location: Austin, TX; Remote

Salary: $175,000–$190,000 per year

Company

hirify.global is a professional services firm delivering future-state software solutions for Fortune 500 companies, with a focus on cybersecurity, cloud computing, data analytics, and AI.

What you will do

• Design, develop, maintain, and enhance core, domain-specific, and client-specific ontologies.
• Establish ontology development standards, best practices, and quality assurance processes.
• Partner with client subject matter experts to gather domain knowledge, define competency questions, and validate ontology models against client data.
• Create and maintain RDF/Turtle artifacts, visualizations, and technical documentation while ensuring consistency and interoperability.
• Develop, review, and troubleshoot RML/R2RML mappings for enterprise data sources.
• Support ontology integration into AI applications, knowledge graphs, and semantic reasoning systems, and communicate complex concepts to technical and business stakeholders.

Requirements

• 5+ years of professional experience in ontology development, knowledge representation, or semantic technologies in enterprise environments.
• Bachelor’s degree in Philosophy, Computational Linguistics, Library and Information Science, Computer Science, or a related field emphasizing logic, analytical reasoning, and critical thinking.
• Strong knowledge of RDF/RDFS, OWL, CLIF, and CycL.
• Experience with ontology constraint and validation languages such as SHACL and ShEx.
• Proficiency with ontology development tools such as Protégé or TopBraid.
• Working knowledge of SWRL, Datalog, or Drools, and demonstrated ability to develop, execute, and troubleshoot SPARQL queries.
• Familiarity with W3C standards and other open ontology and semantic web standards.
• Excellent analytical, problem-solving, documentation, and communication skills, with the ability to collaborate in multidisciplinary teams and work independently in a fast-paced environment.

Nice to have

• Advanced degree in Philosophy, Computational Linguistics, Computer Science, Library and Information Science, or a related discipline.
• Experience leading technical projects, managing teams, or coordinating ontology development initiatives.
• Experience with inference engine development, inference path architecture, or inference debugging.
• Experience designing or implementing enterprise-scale, ontology-driven AI solutions.
• Experience with relational databases and SQL.
• Experience developing or integrating enterprise knowledge graphs and semantic reasoning applications.

Culture & Benefits

• Full-time remote position associated with Austin, Texas.
• Work across diverse industries and client environments on enterprise AI initiatives.
• Collaborate with ontologists, technical teams, subject matter experts, business stakeholders, and client representatives.