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Contract Ontology Engineer Jobs (NOW HIRING)

Peraton

$104K - $166K/yr

... ontology engineering, or graph databases * Proficiency with RDF, OWL, SPARQL, and semantic web ... and contract considerations. Depending on the position, employees may be eligible for overtime ...

Guru Schools

Palantir Ontology Data Engineer

Spring, TX · On-site

$101K - $122K/yr

Palantir Ontology Data Engineer Position Responsibilities Job Title:- Palantir Ontology Data Engineer Location:- Spring Texas (On-Site) Job Type:- Long Term Contract Market rate Need Oil & Gas ...

SOSi

Senior Ontology Expert/Project Manager

Doral, FL · On-site

This position is contingent upon contract award** SOSi is seeking a Senior Ontology Expert/Project ... D.) in Systems Engineering, Project Management, Computer Science, Information Technology, Business ...

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All JobsContract Ontology Engineer Jobs

Contract Ontology Engineer information

See salary details

$36.5K

$107.3K

$137.5K

How much do contract ontology engineer jobs pay per year?

As of Jun 13, 2026, the average yearly pay for contract ontology engineer in the United States is $107,282.00, according to ZipRecruiter salary data. Most workers in this role earn between $88,500.00 and $136,000.00 per year, depending on experience, location, and employer.

What is the difference between Contract Ontology Engineer vs Data Scientist?

AspectContract Ontology EngineerData Scientist
Required credentialsKnowledge of ontology modeling, semantic web standards, and related certificationsDegree in data science, statistics, or related fields; certifications like CAP or DASCA
Work environmentTypically in AI, semantic web, or knowledge management projects within tech or research firmsData analysis, machine learning, and statistical modeling in various industries
Employer and industry usageUsed in organizations focusing on knowledge graphs, AI, and semantic data integrationCommon across tech, finance, healthcare, and marketing sectors

The Contract Ontology Engineer specializes in developing and managing ontologies and semantic data models, often within AI and knowledge management projects. In contrast, Data Scientists focus on analyzing data, building predictive models, and deriving insights from data sets. While both roles require technical expertise, their core functions and industry applications differ significantly.

What is the salary of ontology developer?

The salary of an ontology developer typically ranges from $70,000 to $130,000 annually, depending on experience, education, and location. Professionals in this role often work with semantic web technologies, ontologies, and knowledge representation tools, and may require familiarity with languages like OWL or RDF.

What engineers make $300,000 a year?

Senior engineers in specialized fields such as software engineering, petroleum engineering, and aerospace engineering can earn $300,000 or more annually, especially with extensive experience, advanced skills, and in high-demand industries. Executive or managerial engineering roles may also reach this compensation level, often combined with bonuses and stock options.

What does an ontology engineer do?

An ontology engineer designs, develops, and maintains formal representations of knowledge within a specific domain, using tools like OWL or RDF. They create structured frameworks that enable data integration, reasoning, and interoperability across systems, often working with domain experts and utilizing knowledge modeling skills. This role typically requires understanding of semantic technologies and may involve validation and documentation of ontologies.

What engineers make $500,000?

Senior engineers in specialized fields such as software engineering, petroleum engineering, and aerospace engineering can earn $500,000 or more annually, especially with extensive experience, advanced skills, and leadership roles. High compensation often includes bonuses, stock options, or profit sharing, particularly in technology and energy sectors.
More about Contract Ontology Engineer jobs
What cities are hiring for Contract Ontology Engineer jobs? Cities with the most Contract Ontology Engineer job openings:
What are the most commonly searched types of Ontology Engineer jobs? The most popular types of Ontology Engineer jobs are:
What states have the most Contract Ontology Engineer jobs? States with the most job openings for Contract Ontology Engineer jobs include:
What job categories do people searching Contract Ontology Engineer jobs look for? The top searched job categories for Contract Ontology Engineer jobs are:
Contract Ontology Engineer jobs near you
Infographic showing various Contract Ontology Engineer job openings in the United States as of June 2026, with employment types broken down into 56% Full Time, and 44% Contract. Highlights an 67% In-person, and 33% Remote job distribution, with an average salary of $107,282 per year, or $51.6 per hour.
Knowledge Graph/Ontology Engineer

Knowledge Graph/Ontology Engineer

Peraton

Annapolis Junction, MD

$104K - $166K/yr

Other

Posted 25 days ago

Peraton rating

8.2

Company rating: 8.2 out of 10

Based on 53 frontline employees who took The Breakroom Quiz

46th of 204 rated it services

Job description


Knowledge Graph/Ontology Engineer
Job Locations
US-MD-Annapolis Junction | US-NJ-Basking Ridge
Requisition ID
2026-166757
Position Category
Information Technology
Clearance
Secret
Responsibilities

Peraton Labs is seeking a knowledge graph engineer to extend and maintain the knowledge graph that underpins a generative AI-powered analytical platform. This role models entities and their relationships, enabling cross-portfolio queries, entity linking, and relationship-based analytics that connect elements into a navigable knowledge structure.

Key Responsibilities

    Design and implement ontologies for various entities
  • Extend the knowledge graph with entity types and relationship models
  • Build entity extraction and linking pipelines that populate the knowledge graph from both structured and unstructured sources
  • Enable cross-portfolio queries
  • Develop SPARQL query templates and APIs for common analytical patterns
  • Implement knowledge graph quality assurance: consistency checks, completeness monitoring, and conflict resolution
  • Design the knowledge graph update pipeline for incremental data ingestion
  • Collaborate with NLP Engineers on entity resolution and with Data Fusion Engineers on relationship validation

#px2026

Qualifications

Required Qualifications

  • Minimum of 8+ years of experience with a Bachelor's degree, 6+ years with a Master's degree, or 3+ years with a PhD in Computer Science, Information Science, or related field
  • 3+ years of experience with knowledge representation, ontology engineering, or graph databases
  • Proficiency with RDF, OWL, SPARQL, and semantic web technologies
  • Experience with graph databases (Oxigraph, Blazegraph, Neo4j, or similar)
  • Strong Python proficiency; experience with RDF libraries (rdflib, or similar)
  • Understanding of ontology design patterns and best practices
  • Experience with entity resolution and knowledge base population
  • Familiarity with linked data principles and standards
  • US Citizenship with the ability to obtain/maintain a Secret clearance

Preferred Qualifications

  • Experience with defense or government ontologies (DoD Architecture Framework, NIEM)
  • Experience with knowledge graph embedding and graph neural networks
  • Knowledge of provenance tracking and data lineage in knowledge graphs

Peraton Overview

Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees do the can't be done by solving the most daunting challenges facing our customers. Visit peraton.com to learn how we're keeping people around the world safe and secure.

Target Salary Range
$104,000 - $166,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual's experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.
EEO
EEO: Equal opportunity employer, including disability and protected veterans, or other characteristics protected by law.

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About Peraton

Sourced by ZipRecruiter

At Peraton, we re at the forefront of delivering the next big thing every day. We re the partner of choice to help solve some of the world s most daunting challenges, delivering bold, new solutions to keep people around the world safer and more secure.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Herndon, VA, US

Year founded

2017

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