98 ontology jobs at 33 companies in Washington, DC
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Ontology Consultant
United States or Arlington
$110k-$150k/yr HybridFull Time
2+ YOE2+ years developing and managing ontologies; expertise in RDF, OWL, SHACL, SPARQL; hands-on Protégé experience; bachelor's degree or higher in related field; strong communication and facilitation skills.
RDF, OWL, SHACL, SPARQL, Protégé
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Palantir Enterprise Ontology Architect
Arlington, Virginia, United States
HybridFull Time
6+ YOEActive Secret clearance, bachelor's degree, 6+ years relevant experience (≥3 years hands-on in data modeling/ontology), Palantir Foundry ontology experience, metadata and API governance, familiarity with identity and access concepts.
Palantir Foundry, Palantir Ontology Manager, SQL
3w
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Palantir Foundry Ontology Engineer
San Diego or McLean
$78k-$176k/yr OnsiteFull Time
3+ YOE3+ years in software/data/platform engineering, experience with Palantir Foundry, ontology design, Python or TypeScript, stakeholder engagement, and ability to obtain Secret clearance; bachelor\u0002s degree required.
Palantir Foundry, Python, TypeScript, Git
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Ontology Engineer (TS/SCI)
Herndon, Virginia, United States
$137k-$200k/yr OnsiteFull Time
12+ YOEU.S. citizen with active TS/SCI + CI poly; 12+ years with an advanced degree or 17+ years with a bachelor's; experience designing ontologies/knowledge graphs and using RDF, OWL, SHACL, and SPARQL.
RDF, OWL, SHACL, SPARQL
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Ontology Engineer (TS/SCI)
Herndon, Virginia, United States
$137k-$200k/yr OnsiteFull Time
12+ YOEU.S. citizen with active TS/SCI+CI polygraph, 12+ years experience with advanced degree (or 17+ years with bachelor's); expertise designing ontologies/knowledge graphs and using RDF, OWL, SHACL, and SPARQL.
RDF, OWL, SHACL, SPARQL
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Palantir Foundry Ontology Engineer
McLean, Virginia, United States
$78k-$176k/yr OnsiteFull Time
3+ YOE3+ years software/data/platform engineering, 1+ year Palantir Foundry experience, Python or TypeScript, ontology design, pipeline development, ability to obtain Secret clearance, and a bachelor's in CS/Engineering/Analytics or related.
Palantir Foundry, Foundry Code Repositories, Foundry Pipeline Builder, Python, TypeScript, AIP Builder, Git, CI/CD
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Government and Public Sector - AI & Data - Ontology Senior Analyst
McLean or New York City or Washington or California or Sacramento or Washington, D.C.
$107k-$177k/yr HybridFull Time
3+ YOEBachelor's degree, Secret clearance eligibility, and 3–5+ years of AI and data experience, including enterprise ontologies, semantic data models, data governance, and analytics-ready data structures.
Palantir Foundry, Workshop, Power Platform
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Senior Associate, Product Management - Document Intelligence & Ontology
McLean or Charlotte or Richmond
$101k-$127k/yr OnsiteFull Time
1+ YOEBachelor’s degree or military experience and at least 1 year in product management, design, agile delivery, business analysis, data science, or software engineering; technical fluency and cross-functional leadership required.
Chrome
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Senior Associate, Product Management - Document Intelligence & Ontology
McLean or Charlotte or Richmond
$101k-$127k/yr OnsiteFull Time
1+ YOEBachelor's degree or military experience,1+ year product management or related experience,experience with data architecture and cross-functional delivery,strong communication and leadership skills.
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Senior Associate, Product Management - Document Intelligence & Ontology
McLean or Charlotte or Richmond
$101k-$127k/yr OnsiteFull Time
1+ YOEBachelor's degree or military experience and at least 1 year in product management, product design, agile delivery, business analysis, data science, or software engineering; technical fluency and cross-functional leadership required.
Chrome
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Ontologist
Laurel, Maryland, United States
$100k-$245k/yr OnsiteFull Time
Bachelor's in a relevant field; proficiency with OWL, RDF/RDFS, SPARQL; experience building domain ontologies and using ontology editors/tools; ability to obtain TS/SCI+poly clearance; strong communication and analytical skills.
Ontology Web Language (OWL), Resource Description Framework Schema (RDFs), Resource Description Framework (RDF), SPARQL, TopBraid Composer, Protégé, ROBOT, rdflib, Apache Jena, Sesame, RDF4J, GraphDB, Stardog, Jena Fuseki, SHACL, SPIN, GIT, Python, Basic Formal Ontology (BFO), The Common Core Ontologies (CCO), SOSA/SSN, Time Ontology, OBO Foundry, Dublin Core, SKOS, QUDT, GeoSPARQL
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Knowledge Architecture Lead / Senior Ontologist
Albany or Arlington or Atlanta or Austin or Beaverton or Bentonville or Boston or Carmel or Charlotte or Chicago or Cincinnati or Cleveland or Columbus or Culver City or Denver or Des Moines or Detroit or Hartford or Houston or Irving or Kirkland or Miami or Milwaukee or Minneapolis or Morristown or Mountain View or Nashville or New York City or Oklahoma City or Overland Park or Philadelphia or Pittsburgh or Raleigh or Redmond or Sacramento or San Diego or San Francisco or Scottsdale or Seattle or St. Louis or St. Petersburg or Walnut Creek or United States
$139k-$414k/yr HybridFull Time
12+ YOE12+ MgmtRequires 12+ years in ontology engineering or knowledge modeling, leadership experience, and a bachelor's, master's, or PhD in information, computer, library, language, or philosophy studies.
OWL 2, RDFS, SKOS, BFO, DOLCE, schema.org, R2RML, RML, SHACL, ShEx, W3C
2w
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Senior Data Architect
McLean, Virginia, United States
OnsiteFull Time
10+ YOE10+ years in data architecture, semantic/ontology/taxonomy design, data modeling and governance; bachelor’s or advanced technical degree; maintain required security clearance.
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Knowledge Modeler / Ontologist Manager
Seattle or Milwaukee or Dallas or Columbus or Kirkland or Cincinnati or New York City or Cleveland or Oklahoma City or Austin or Albany or Chicago or St. Petersburg or Hartford or Pittsburgh or St. Louis or Miami or Sacramento or Raleigh or Minneapolis or Mountain View or Scottsdale or San Francisco or Morristown or Denver or Boston or Philadelphia or Des Moines or Overland Park or Los Angeles or Charlotte or Walnut Creek or Carmel or Houston or Arlington or Atlanta or Redmond or Bentonville or Beaverton or Nashville or Detroit or San Diego
$80k-$294k/yr HybridFull Time
5+ YOERequires 5+ years of ontology engineering or knowledge modeling experience, a bachelor's degree, and expertise in semantic web standards, knowledge graphs, data integration, and stakeholder collaboration.
OWL 2, RDFS, SKOS, RDF, SHACL, SPARQL, W3C, GraphDB, Stardog, Neo4j, Protégé, Ontotext, R2RML, RML, BFO, schema.org, DOLCE, NLP, Agile
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Principal AI & Knowledge Graph Architect
New York City or Livingston or Washington or Texas
$150k-$180k/yr RemoteFull Time
8+ YOEExpertise in enterprise knowledge graphs, ontologies, semantic models, AI information platforms, governance, interoperability standards, APIs, and strategic technical leadership; 8+ years preferred.
CAD, CAE, PLM, MBSE, MCP, ACP, SLMs, LLMs, RAG, vector databases, APIs
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Palantir Foundry Developer/ Analyst
Washington or North America or Europe or Africa or Asia or Australia
$155k-$170k/yr RemoteFull Time
5+ YOEBachelor’s degree in computer science, electrical engineering, or related field; 5+ years implementing Palantir Foundry; hands-on Ontology, governance, security, pipelines, APIs, Python, and SQL.
Palantir Foundry, Palantir Ontology, AI/ML, EDP, Python, SQL
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Engineer I, Data Platforms
Washington, District of Columbia, United States
$97k-$108k/yr RemoteFull Time
1+ YOEBachelor's or equivalent experience in IT/CS/Engineering,1+ years developing in Python and SQL,knowledge of data management,cloud-native tech,DevOps/Git,APIs,and ontology/graph exposure.
Python, SQL, Git, Salesforce
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Data Architect
Springfield or St. Louis
HybridFull Time
8+ YOEBachelor’s degree and 8+ years in data or enterprise architecture; expertise in data models, ontologies, APIs, metadata, distributed architectures, databases, ETL/ELT, Agile, and active TS/SCI clearance.
Cloud Native Platform (CNP), Model-Based Systems Engineering (MBSE), Digital Threads, Digital Twin, Zero Trust, APIs, Argo Workflows, Scrum, Agile, DevSecOps, Enterprise Architecture (EA), CISSP, Security+
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Knowledge Graph Engineer II (54542)
Washington, District of Columbia, United States
$76k-$100k/yr RemoteContract
5+ YOERequires a master's degree or equivalent experience, 5+ years in semantic web, knowledge graphs, and ontology engineering, plus RDF, SKOS, SPARQL, OWL, SHACL, Python, geospatial, and AI expertise.
RDF, SKOS, SPARQL, OWL, SHACL, Python, Microsoft Office, GIS, USGS, USBR, USACE, EPA, NSF Proto-OKN, NSF OKN, Semantic Accessibility Layer, HY Features, WaterML, ODM2, IoW Coalition, CUAHSI, National Hydrography Dataset
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Data Engineer (Vantage) - Clearance Required
United States or Belcamp or Crystal City
$101k-$175k/yr RemoteFull Time
5+ YOEActive DoD Secret clearance,5+ years data engineering experience,expert Python,SQL,PySpark,experience with Palantir Foundry/Advana,ability to scale ETL pipelines and manage ontologies.
Python, SQL, PySpark, Palantir Foundry, Advana
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