Ontology Software Engineer — TS/SCI Clearance

Vantor Inc.; Herndon (VA); On-site; USD 165,000 - 242,000; Full time

Benefits offered by this job

401(k) with company match

Mental health resources

Student loan repayment assistance

Adoption reimbursement

Pet insurance

Job summary

Vantor Inc. seeks a Software Engineer to design, develop, integrate, and maintain software for Object-Based Intelligence, knowledge graphs, and semantic data platforms. You will build scalable APIs, microservices, and secure containerized apps in an Agile DevSecOps environment, collaborating with ontology and data teams.

The role emphasizes secure development, performance optimization, and interactions with government stakeholders to deliver mission-critical software solutions.

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.

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 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.

Skills

Java

Python

C#

RESTful APIs

Microservices

Distributed systems

Git

CI/CD

Communication

Education

Advanced degree

Bachelor's degree

Tools

Docker

Kubernetes/OpenShift

Git

REST

Job description

Vantor Inc. seeks a Software Engineer to design, develop, integrate, and maintain software for Object-Based Intelligence, knowledge graphs, and semantic data platforms. You will build scalable APIs, microservices, and secure containerized apps in an Agile DevSecOps environment, collaborating with ontology and data teams.

The role emphasizes secure development, performance optimization, and interactions with government stakeholders to deliver mission-critical software solutions.