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We are seeking a Ontologist to design, develop, and maintain ontology frameworks and knowledge graphs that support data integration, knowledge management, and semantic data modeling initiatives. This role will partner with cross-functional teams to ensure ontologies align with business objectives, enhance data interoperability, and enable effective information retrieval across enterprise systems.

• Design and Develop Ontologies: Build and refine ontologies and knowledge graphs using established ontology frameworks to support data organization, search, and knowledge representation needs.
• Collaborate with Stakeholders: Partner with project managers, data analysts, and subject matter experts to gather requirements, validate ontology structures, and capture domain knowledge.
• Leverage Semantic Technologies: Utilize semantic web standards and technologies, including OWL, RDF, and related tools, to create and maintain scalable ontology solutions.
• Support Data Integration: Integrate ontologies with existing systems and databases, developing mappings between ontology models and legacy data structures to improve interoperability.
• Documentation and Enablement: Create comprehensive documentation for ontology models, frameworks, and processes, and provide training to internal teams on ontology usage and best practices.
• Project Delivery: Manage priorities, timelines, and deliverables to ensure projects are completed on schedule and meet quality standards.

• Experience designing and implementing ontologies, taxonomies, or knowledge graphs.
• Strong understanding of semantic web technologies, including OWL, RDF, and related standards.
• Experience with data architecture, solution architecture, and data integration initiatives.
• Ability to collaborate effectively with technical and non-technical stakeholders.
• Strong project management and organizational skills with the ability to manage multiple priorities.
• Excellent communication, documentation, and problem-solving abilities.

Job Type & Location

This is a Contract position based out of San Francisco, CA.

The pay range for this position is $65.00 - $65.00/hr.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following:
• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available
• Life Insurance (Voluntary Life & AD&D for the employee and dependents)
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

This is a fully remote position.

This position is anticipated to close on Jul 17, 2026.

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

We’re a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We’re a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We’re strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We’re building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.