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Contract Knowledge Graph Software Engineer Jobs in Ashburn, VA

BTI360 Inc

NLP Engineer with Security Clearance

Herndon, VA · On-site

$117K - $141K/yr

As an NLP Engineer at BTI360, you will: • Lead end-to-end knowledge graph and knowledgebase ... software engineering practices such as git, CI/CD, code reviews, documentation, and ability to ...

Vantor

Database Engineer (TS/SCI)

Herndon, VA · On-site

  • Retirement

Working closely with ontology engineers, software developers, data architects, and Government ... Experience supporting enterprise ontology or knowledge graph initiatives within Government or ...

Navtech, Inc.

Neo4J Developer

Rockville, MD · On-site

$53.50 - $69/hr

Query Languages for Property-Graph or Knowledge-Graph, NoSQL, and Relational databases e.g. Gremlin ... Collaborate with other software engineers, domain experts, and end-users, to build the right ...

BTI360

NLP Engineer - Clearance Required

Herndon, VA · On-site

Responsibilities : • Lead end-to-end knowledge graph and knowledge base development efforts from ... BTI360 develops and delivers big data software solutions to minimize the time spent on research and ...

Redhorse Corporation

Full Stack Developer

Arlington, VA · On-site

$160K - $190K/yr

Our approach combines human-centered design, modern software engineering, graph technologies ... Support the integration of the knowledge graph database and enterprise analytics tools, AI ...

Medium

Senior Database Engineer

Herndon, VA · On-site

$150 - $190/hr

... knowledge graph platforms. The Sneior Database Engineer serves as the technical authority for the ... Working closely with ontology engineers, software developers, data architects, and Government ...

Redhorse Corporation

Full Stack Developer

Arlington, VA · On-site

$160K - $190K/yr

Our approach combines human-centered design, modern software engineering, graph technologies ... Support the integration of the knowledge graph database and enterprise analytics tools, AI ...

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Showing results 21-40

All JobsContract Knowledge Graph Software Engineer JobsContract Knowledge Graph Software Engineer Jobs in Ashburn, VA

Contract Knowledge Graph Software Engineer information

See Ashburn, VA salary details

$64.9K

$150.9K

$210.1K

How much do contract knowledge graph software engineer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for contract knowledge graph software engineer in Ashburn, VA is $150,858.00, according to ZipRecruiter salary data. Most workers in this role earn between $122,700.00 and $176,900.00 per year, depending on experience, location, and employer.

How does a contract knowledge graph software engineer typically collaborate with data scientists and domain experts during a project?

As a Contract Knowledge Graph Software Engineer, you’ll often work closely with data scientists and domain experts to ensure that the knowledge graph accurately represents the underlying data and business logic. Collaboration usually involves regular meetings to clarify requirements, discuss data models, and review results. You may be tasked with translating complex domain concepts into graph structures, while also providing feedback on data quality and integration challenges. This cross-functional teamwork ensures that the final product meets both technical standards and business needs.

What is the difference between Contract Knowledge Graph Software Engineer vs Contract Data Engineer?

AspectContract Knowledge Graph Software EngineerContract Data Engineer
Required CredentialsBachelor's in CS or related, knowledge of graph databases, programming skillsBachelor's in CS, experience with data pipelines, SQL, and cloud platforms
Work EnvironmentTech companies, consulting firms, project-based rolesData-focused teams, cloud environments, analytics projects
Industry UsageAI, semantic web, knowledge managementData warehousing, big data, analytics

The Contract Knowledge Graph Software Engineer primarily focuses on developing and maintaining knowledge graphs using graph databases and semantic technologies, while the Contract Data Engineer concentrates on building data pipelines, managing large datasets, and supporting analytics. Both roles require strong programming skills and are often found in tech-driven industries, but they serve different core functions within data and knowledge management ecosystems.

What is a contract knowledge graph software engineer?

A Contract Knowledge Graph Software Engineer is a professional who specializes in designing, developing, and maintaining knowledge graphs on a contract basis. Knowledge graphs are data structures that represent relationships between entities, enabling more effective data integration and semantic search. These engineers often work with graph databases, semantic web technologies, and ontologies to help organizations manage and leverage complex data. Their contract role means they are typically hired for specific projects or fixed periods rather than as permanent employees.

What are the key skills and qualifications needed to thrive as a contract knowledge graph software engineer?

To thrive as a Contract Knowledge Graph Software Engineer, you need a strong background in computer science, proficiency in graph databases (such as Neo4j or Amazon Neptune), and experience with knowledge representation and data modeling. Familiarity with programming languages like Python or Java, as well as tools for semantic web technologies (RDF, SPARQL), is typically required. Strong problem-solving skills, adaptability, and effective collaboration are essential soft skills in this role. These competencies ensure efficient design and implementation of complex knowledge graphs, enabling organizations to unlock valuable insights from their data.

What are the most commonly searched types of Knowledge Graph Software Engineer jobs in Ashburn, VA?

The most popular types of Knowledge Graph Software Engineer jobs in Ashburn, VA are:

What cities near Ashburn, VA are hiring for Contract Knowledge Graph Software Engineer jobs?

Cities near Ashburn, VA with the most Contract Knowledge Graph Software Engineer job openings:

Contract Knowledge Graph Software Engineer jobs near you

Ontology Software Developer (TS/SCI)

Maxar Technologies, Inc.

Herndon, VA • On-site

Full-time

Retirement

Posted 17 days ago

Job description

Vantor is forging the new frontier of spatial intelligence, helping decision makers and operators navigate what's happening now and shape what's coming next. Vantor is a place for problem solvers, changemakers, and go-getters-where people are working together to help our customers see the world differently, and in doing so, be seen differently. Come be part of a mission, not just a job, where you can: Shape your own future, build the next big thing, and change the world.
To be eligible for this position, you must be a U.S. Citizen. This position requires an active U.S. Government security clearance, applicants who do not currently hold the required clearance will not be eligible for consideration. Employment for cleared roles is contingent upon verification of clearance status.
Export Control/ITAR: Certain roles may be subject to U.S. export control laws, requiring U.S. person status as defined by 8 U.S.C. 1324b(a)(3).
Please review the job details below.
This position requires an active U.S. Government Security Clearance at the TS/SCI level with CI polygraph.
Vantor is seeking a Software Engineer to join our team. In this position you will design, develop, integrate, and maintain software applications and services that support Object-Based Intelligence (OBI) mission requirements, enterprise ontologies, and knowledge graph capabilities. The Software Engineer serves as a key contributor to the design, development, and sustainment of mission-critical software solutions that enable semantic data integration, knowledge management, and advanced analytics. This position develops scalable applications, APIs, and microservices that integrate ontology-driven data models, knowledge graphs, and enterprise data sources to support Object-Based Intelligence workflows. Working within an Agile DevSecOps environment, the Software Engineer collaborates with ontology engineers, database engineers, data scientists, and Government stakeholders to deliver secure, high-performance applications that leverage Semantic Web technologies and AI/ML capabilities.
Responsibilities:
  • Design, develop, test, deploy, and maintain software applications and microservices supporting Object-Based Intelligence mission requirements.
  • Develop APIs and backend services that integrate with enterprise ontologies, knowledge graphs, semantic databases, and object-management systems.
  • Implement software solutions that leverage Semantic Web technologies, including RDF, OWL, SPARQL, and graph-based data models, to enable advanced search, reasoning, and data interoperability.
  • Collaborate with ontology engineers, database engineers, data scientists, analysts, and Government stakeholders to translate mission requirements into scalable software solutions.
  • Design and develop secure, containerized applications using modern software engineering practices and cloud-native technologies.
  • Integrate heterogeneous data sources through RESTful APIs, messaging services, and data integration frameworks to support enterprise knowledge management.
  • Develop automated unit, integration, and system tests while supporting continuous integration and continuous deployment (CI/CD) pipelines.
  • Optimize application performance, scalability, and reliability to support high-volume mission operations and advanced analytics.
  • Participate in Agile development activities, including sprint planning, code reviews, technical design sessions, and backlog refinement.
  • Produce and maintain software design documentation, interface specifications, API documentation, and technical implementation guides.
  • Support AI/ML initiatives by developing software services that enable access to semantic data, knowledge graphs, and contextual reasoning capabilities.
  • Provide technical leadership, mentoring, and knowledge transfer activities to Government personnel and project team members on software engineering best practices.

Minimum Qualifications:
  • Must be a U.S. citizen and have an active TS/SCI with CI polygraph.
  • 12 years of experience and an advanced degree or 17 years of experience with a bachelor's degree.
  • Demonstrated experience designing, developing, and maintaining enterprise software applications using modern programming languages such as Java, Python, or C#.
  • Experience developing RESTful APIs, microservices, and distributed applications.
  • Experience integrating applications with relational databases, graph databases, or semantic data platforms.
  • Experience with containerization technologies such as Docker and Kubernetes/OpenShift.
  • Familiarity with Agile software development methodologies, DevSecOps practices, and CI/CD pipelines.
  • Experience with version control systems such as Git.
  • Ability to communicate complex technical concepts effectively to both technical and non-technical stakeholders.

Preferred Qualifications:
  • Experience supporting Object-Based Intelligence, Intelligence Community, or Department of Defense mission systems.
  • Experience developing applications that leverage Semantic Web technologies, including RDF, OWL, SPARQL, knowledge graphs, or graph databases.
  • Experience integrating AI/ML services, large language models (LLMs), or advanced analytics capabilities into enterprise applications.
  • Experience with cloud-native application development using AWS, Azure, or Red Hat OpenShift.
  • Experience implementing secure software development practices in accordance with Government cybersecurity requirements.
  • Experience with event-driven architectures, message brokers, and enterprise integration frameworks.
  • AWS Certified Developer, Microsoft Certified: Azure Developer Associate, Red Hat Certified Specialist, Security+, or equivalent software engineering certification.
  • Experience providing technical leadership, mentoring, and formal knowledge transfer to Government personnel or large multidisciplinary teams.

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Pay Transparency: To support pay transparency, Vantor includes salary ranges in all U.S. job postings. Starting pay for this role will fall within the listed range and will be based on factors such as experience, qualifications, skills, location, and market conditions. Candidates who meet the minimum requirements for the role should not expect to receive compensation at the top of the range. The listed range reflects the expected pay for this position, and final offers will be determined based on each candidate's experience, expertise, and alignment with the role.
• The base pay for this position within the Washington, DC metropolitan area is: $165,000.00 - $220,000.00 - $242,000.00 annually.
For all other states, we use geographic cost of labor as an input to develop market-driven ranges for our roles, and as such, each location where we hire may have a different range.
Benefits: Vantor offers a competitive total rewards package that goes beyond the standard, including a robust 401(k) with company match, mental health resources, and unique perks like student loan repayment assistance, adoption reimbursement and pet insurance to support all aspects of your life. You can find more information on our benefits at: https://www.Vantor.com/careers
The application window is three days from the date the job is posted and will remain posted until a qualified candidate has been identified for hire. If the job is reposted regardless of reason, it will remain posted three days from the date the job is reposted and will remain reposted until a qualified candidate has been identified for hire.
The date of posting can be found on Vantor's Career page at the top of each job posting.
To apply, submit your application via Vantor's Career page.
EEO Policy: Vantor is an equal opportunity employer committed to an inclusive workplace. We believe in fostering an environment where all team members feel respected, valued, and encouraged to share their ideas. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, gender identity, sexual orientation, disability, protected veteran status, age, or any other characteristic protected by law.
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About Maxar Technologies

Sourced by ZipRecruiter

Maxar Technologies, headquartered in Denver, CO, US, is a space technology company established in 1969. Operating in the Aerospace Industry, Maxar's key areas of business include Earth Intelligence and Space Infrastructure. The products they offer are critical for global communications, environmental monitoring, national security, intelligence operations, disaster response, and more. Passionate about unlocking the potential of space, Maxar's mission is "to build a better world by harnessing space technology". The company prides itself on advancing state-of-the-art technology, delivering exceptional customer service, and driving growth.

Industry

Space research administration

Company size

1,001 - 5,000 Employees

Headquarters location

Denver, CO, US

Year founded

1969

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