Ontologist - Sr
Doral, FL · On-site
$117K - $154K/yr
Proficiency in writing advanced SPARQL queries * Strong skills in the W3C Web Ontology Language (OWL) * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
Doral, FL · On-site
$117K - $154K/yr
Proficiency in writing advanced SPARQL queries * Strong skills in the W3C Web Ontology Language (OWL) * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
Doral, FL · On-site
$117K - $154K/yr
Proficiency in writing advanced SPARQL queries * Strong skills in the W3C Web Ontology Language (OWL) * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
$117K - $140K/yr
Proficiency in writing advanced SPARQL queries. * Strong skills in the W3C Web Ontology Language (OWL). * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
$117K - $140K/yr
Proficiency in writing advanced SPARQL queries. * Strong skills in the W3C Web Ontology Language (OWL). * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
Philadelphia, PA · On-site
$115K - $138K/yr
... chat, SPARQL trace explainability, and graph explorer. Knowledge Graph & Semantic Technologies (Must-Have) • 3+ years hands-on experience with graph databases (GraphDB, Neo4j, Stardog)in a ...
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Philadelphia, PA · On-site
$115K - $138K/yr
... chat, SPARQL trace explainability, and graph explorer. Knowledge Graph & Semantic Technologies (Must-Have) • 3+ years hands-on experience with graph databases (GraphDB, Neo4j, Stardog)in a ...
$17.50 - $23.25/hr
... SPARQL; iterate on representation patterns. • Codify tacit business knowledge into formal structures, in partnership with domain experts. • Explain tradeoffs between modeling approaches and ...
$17.50 - $23.25/hr
... SPARQL; iterate on representation patterns. • Codify tacit business knowledge into formal structures, in partnership with domain experts. • Explain tradeoffs between modeling approaches and ...
Chicago, IL · On-site
$56.50 - $73.25/hr
Practical experience with RDF, OWL, SPARQL, and ideally SHACL. * Experience with relational databases (SQL) and graph databases (SPARQL). * Hands-on experience with ontology/graph tools such as Prot ...
New
Chicago, IL · On-site
$56.50 - $73.25/hr
Practical experience with RDF, OWL, SPARQL, and ideally SHACL. * Experience with relational databases (SQL) and graph databases (SPARQL). * Hands-on experience with ontology/graph tools such as Prot ...
New
Reston, VA · On-site
$110K - $150K/yr
RDF, OWL, SPARQL) to knowledge model entities, relationships, and vocabulary in accordance with industry and government data standards. • Establish processes for ontology version control, change ...
Reston, VA · On-site
$110K - $150K/yr
RDF, OWL, SPARQL) to knowledge model entities, relationships, and vocabulary in accordance with industry and government data standards. • Establish processes for ontology version control, change ...
Reston, VA · On-site
$53 - $69/hr
RDF, OWL, SPARQL) to knowledge model entities, relationships, and vocabulary in accordance with industry and government data standards. • Establish processes for ontology version control, change ...
Reston, VA · On-site
$53 - $69/hr
RDF, OWL, SPARQL) to knowledge model entities, relationships, and vocabulary in accordance with industry and government data standards. • Establish processes for ontology version control, change ...
Miami, FL · On-site
$117K - $154K/yr
Proficiency in writing advanced SPARQL queries * Strong skills in the W3C Web Ontology Language (OWL) * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
Quick apply
Miami, FL · On-site
$117K - $154K/yr
Proficiency in writing advanced SPARQL queries * Strong skills in the W3C Web Ontology Language (OWL) * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
$126K - $166K/yr
Implement SPARQL querying and reasoning layers over knowledge graphs to drive downstream transformations and ensure consistent interpretation of business concepts. * Architect and deliver Python ‑ ...
$126K - $166K/yr
Implement SPARQL querying and reasoning layers over knowledge graphs to drive downstream transformations and ensure consistent interpretation of business concepts. * Architect and deliver Python ‑ ...
San Francisco, CA · On-site
$144K - $190K/yr
You will spend the majority of your time designing ontologies, writing SPARQL, building knowledge graph pipelines, and working closely with data engineering and data science peers to put your models ...
San Francisco, CA · On-site
$144K - $190K/yr
You will spend the majority of your time designing ontologies, writing SPARQL, building knowledge graph pipelines, and working closely with data engineering and data science peers to put your models ...
Houston, TX · On-site
$61 - $78.25/hr
Experience with RDF, OWL, SHACL, SPARQL, graph databases, or knowledge graph platforms. * Experience designing semantic layers, business glossaries, metadata models, or domain ontologies.
Houston, TX · On-site
$61 - $78.25/hr
Experience with RDF, OWL, SHACL, SPARQL, graph databases, or knowledge graph platforms. * Experience designing semantic layers, business glossaries, metadata models, or domain ontologies.
$117K - $140K/yr
Proficiency in writing advanced SPARQL queries. * Strong skills in the W3C Web Ontology Language (OWL). * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
$117K - $140K/yr
Proficiency in writing advanced SPARQL queries. * Strong skills in the W3C Web Ontology Language (OWL). * Solid understanding of Basic Formal Ontology (BFO) and Common Core Ontologies (CCO)
You are expected to write clean, production-quality Python and SPARQL, take ownership of well-scoped graph work streams, and grow your depth in semantic modeling under the guidance of senior team ...
You are expected to write clean, production-quality Python and SPARQL, take ownership of well-scoped graph work streams, and grow your depth in semantic modeling under the guidance of senior team ...
San Francisco, CA · On-site +1
$180K - $230K/yr
You will spend the majority of your time designing ontologies, writing SPARQL, building knowledge graph pipelines, and working closely with data engineering and data science peers to put your models ...
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San Francisco, CA · On-site +1
$180K - $230K/yr
You will spend the majority of your time designing ontologies, writing SPARQL, building knowledge graph pipelines, and working closely with data engineering and data science peers to put your models ...
San Francisco, CA · On-site +1
$150K - $180K/yr
You are expected to write clean, production-quality Python and SPARQL, take ownership of well-scoped graph work streams, and grow your depth in semantic modeling under the guidance of senior team ...
Quick apply
San Francisco, CA · On-site +1
$150K - $180K/yr
You are expected to write clean, production-quality Python and SPARQL, take ownership of well-scoped graph work streams, and grow your depth in semantic modeling under the guidance of senior team ...
You are expected to write clean, production-quality Python and SPARQL, take ownership of well-scoped graph work streams, and grow your depth in semantic modeling under the guidance of senior team ...
You are expected to write clean, production-quality Python and SPARQL, take ownership of well-scoped graph work streams, and grow your depth in semantic modeling under the guidance of senior team ...
RDF, OWL, SPARQL) to knowledge model entities, relationships, and vocabulary in accordance with industry and government data standards. • Establish processes for ontology version control, change ...
RDF, OWL, SPARQL) to knowledge model entities, relationships, and vocabulary in accordance with industry and government data standards. • Establish processes for ontology version control, change ...
Herndon, VA · On-site
$180K - $250K/yr
Leveraging Semantic Web standards, including RDF, OWL, and SPARQL, the Lead Ontologist develops scalable knowledge frameworks that enhance data discoverability, support AI/ML applications, and ...
New
Herndon, VA · On-site
$180K - $250K/yr
Leveraging Semantic Web standards, including RDF, OWL, and SPARQL, the Lead Ontologist develops scalable knowledge frameworks that enhance data discoverability, support AI/ML applications, and ...
New
Reston, VA · On-site
$53.25 - $69/hr
RDF, OWL, SPARQL) to knowledge model entities, relationships, and vocabulary in accordance with industry and government data standards. • Establish processes for ontology version control, change ...
Reston, VA · On-site
$53.25 - $69/hr
RDF, OWL, SPARQL) to knowledge model entities, relationships, and vocabulary in accordance with industry and government data standards. • Establish processes for ontology version control, change ...
Deep knowledge of Gremlin, Cypher/openCypher, and/or SPARQL, including performance tuning and query design best practices * Experience with data lakes/lakehouses (Delta Lake, Iceberg, Parquet) across ...
Deep knowledge of Gremlin, Cypher/openCypher, and/or SPARQL, including performance tuning and query design best practices * Experience with data lakes/lakehouses (Delta Lake, Iceberg, Parquet) across ...
$18.75 - $21.11
10% of jobs
$21.11 - $23.47
14% of jobs
$23.86 is the 25th percentile. Wages below this are outliers.
$23.47 - $25.83
10% of jobs
The median wage is $27.93 / hr.
$25.83 - $28.19
19% of jobs
$28.19 - $30.55
13% of jobs
$30.55 - $32.91
9% of jobs
$33.18 is the 75th percentile. Wages above this are outliers.
$32.91 - $35.27
14% of jobs
$35.27 - $37.63
3% of jobs
$37.63 - $39.99
2% of jobs
$39.99 - $42.35
2% of jobs
$42.35 - $44.71
5% of jobs
$18
$30
$44
SPARQL Developers often encounter challenges when working with large, interconnected datasets or optimizing complex queries for triplestore performance. Navigating the nuances of schema design, integrating disparate data sources, and ensuring precise query results are part of the day-to-day work. Collaborating closely with data architects and subject matter experts helps address ambiguity and clarify project requirements. Staying up to date with advances in semantic technologies and routinely profiling queries can also lead to more efficient solutions and better overall project outcomes.
To thrive in a SPARQL Developer role, you need a solid understanding of semantic web technologies, RDF data modeling, and advanced SPARQL query design, typically supported by a degree in Computer Science or a related field. Experience with triplestore databases such as Apache Jena, Virtuoso, or Stardog, and proficiency in programming languages like Python or JavaScript are commonly required. Strong analytical thinking, attention to detail, and effective collaboration skills are crucial in this position. These competencies ensure efficient extraction of insights from complex linked data, facilitate integration tasks, and support business-driven data initiatives.
A SPARQL job typically involves working with SPARQL, a query language used to retrieve and manipulate data stored in RDF (Resource Description Framework) format. Professionals in this role often work with semantic web technologies, knowledge graphs, and linked data. They may develop queries to extract insights, integrate data from various sources, and optimize database performance. Common roles include data engineers, semantic web developers, and ontology specialists.

$117K - $154K/yr
Full-time
Medical, Dental, Vision, Life, Retirement, PTO
Re-posted 21 days ago