Data Ontology/Taxonomy Expert

Arlington, VA
Data Ontology/Taxonomy Expert

Position Description
CGI Federal has an exciting opportunity for a Data Ontology/Taxonomy Expert within our Intel sector advancing the national security mission through cutting edge technology. You must have a passion for keeping pace with rapidly evolving technology advancements and leveraging your knowledge on a highly collaborative team to deliver state-of-the-art capabilities.

The Data Ontology/Taxonomy Expert designs, develops, and maintains structured classification systems and conceptual models to organize data and knowledge within an organization. By creating logical frameworks like taxonomies and ontologies, this expert improves data discoverability, usability, and governance across the enterprise.

CGI Federal is growing its high-performance team whose members share a passion for building high-quality, scalable, advanced IT solutions in a collaborative, fast-paced, outcome-driven mission.

This position is located in USA VA Arlington, however, a hybrid working model is acceptable.
Must live within a 50-mile radius of the DMV/NCR

Your future duties and responsibilities
• Design and development: Create, implement, and maintain enterprise-level taxonomies, ontologies, and controlled vocabularies to support content and data organization across various platforms.
• Data modeling: Model complex data and its relationships to enable semantic interoperability and provide a unified view of the organization's information assets.
• Cross-functional collaboration: Partner with data engineers, data scientists, product managers, and subject matter experts to understand business needs and translate them into effective data classification schemes.
• Metadata management: Establish and enforce metadata standards and tagging best practices to ensure consistent and accurate data application by content creators.
• Governance: Define and lead taxonomy and ontology governance processes, including versioning and change management, to ensure the framework evolves with organizational needs.
• Systems integration: Collaborate with technical teams to integrate taxonomy and ontology functionality into new and existing systems, including content management systems (CMS), digital asset management (DAM), and knowledge graphs.
• Training and support: Educate and train staff on taxonomy principles, metadata standards, and best practices to promote a culture of effective data organization.
• Maintenance and auditing: Conduct regular audits and analysis to identify inconsistencies and refine existing taxonomies and ontologies for optimal performance.
• Semantic technology application: Support the use of semantic technologies, such as knowledge graphs, and align models to enable artificial intelligence (AI) and machine learning (ML) applications.

Required qualifications to be successful in this role
Journeyman:
• Education and/or Experience: Bachelor’s degree and/or 2 to 5 years of experience
• Security Clearance: TS/SCI required with the ability to obtain a Ci Poly; active TS/SCI with Poly highly desired
• Technical expertise:
o Proficiency with semantic web technologies and standards, such as OWL (Web Ontology Language), RDF (Resource Description Framework), and SKOS (Simple Knowledge Organization System).
o Hands-on experience with ontology and taxonomy management tools, such as PoolParty or Protégé.
o Experience with knowledge graphs and related graph database technologies.
o Familiarity with querying languages like SPARQL or scripting languages like Python.
• Analytical skills: Excellent problem-solving, analytical, and critical thinking skills with a strong attention to detail.
• Communication: Strong interpersonal and communication skills to effectively collaborate with both technical and non-technical stakeholders.
• Domain knowledge: The ability to quickly grasp and model complex, domain-specific concepts.

Senior:
• Education and/or Experience: Bachelor’s degree and/or 5 to 10 years of experience
• Security Clearance: TS/SCI required with the ability to obtain a TS/SCI with Poly highly desired
• Technical expertise:
o Proficiency with semantic web technologies and standards, such as OWL (Web Ontology Language), RDF (Resource Description Framework), and SKOS (Simple Knowledge Organization System).
o Hands-on experience with ontology and taxonomy management tools, such as PoolParty or Protégé.
o Experience with knowledge graphs and related graph database technologies.
o Familiarity with querying languages like SPARQL or scripting languages like Python.
• Analytical skills: Excellent problem-solving, analytical, and critical thinking skills with a strong attention to detail.
• Communication: Strong interpersonal and communication skills to effectively collaborate with both technical and non-technical stakeholders.
• Domain knowledge: The ability to quickly grasp and model complex, domain-specific concepts.

SME:
• Education and/or Experience: Bachelor’s degree and/or 10+ years of experience
• Security Clearance: TS/SCI required with the ability to obtain a TS/SCI with Poly highly desired
• Technical expertise:
o Proficiency with semantic web technologies and standards, such as OWL (Web Ontology Language), RDF (Resource Description Framework), and SKOS (Simple Knowledge Organization System).
o Hands-on experience with ontology and taxonomy management tools, such as PoolParty or Protégé.
o Experience with knowledge graphs and related graph database technologies.
o Familiarity with querying languages like SPARQL or scripting languages like Python.
• Analytical skills: Excellent problem-solving, analytical, and critical thinking skills with a strong attention to detail.
• Communication: Strong interpersonal and communication skills to effectively collaborate with both technical and non-technical stakeholders.
• Domain knowledge: The ability to quickly grasp and model complex, domain-specific concepts.

CGI is required by law in some jurisdictions to include a reasonable estimate of the compensation range for this role. The determination of this range includes various factors not limited to skill set, level, experience, relevant training, and licensure and certifications. To support the ability to reward for merit-based performance, CGI typically does not hire individuals at or near the top of the range for their role. Compensation decisions are dependent on the facts and circumstances of each case. A reasonable estimate of the current range for this role in the U.S. is $100,000.00 - $200000.00.
CGI Federal's benefits are offered to eligible professionals on their first day of employment to include:
• Competitive compensation
• Comprehensive insurance options
• Matching contributions through the 401(k) plan and the share purchase plan
• Paid time off for vacation, holidays, and sick time
• Paid parental leave
• Learning opportunities and tuition assistance
• Wellness and Well-being programs

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Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team—one of the largest IT and business consulting services firms in the world.

Qualified applicants will receive consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business.

CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at [email protected] . You will need to reference the Position ID of the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position ID will not be returned.

We make it easy to translate military experience and skills! Click here to be directed to our site that is dedicated to veterans and transitioning service members.

All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of US government security clearance held. Dependent upon role and/or federal government security clearance requirements, and in accordance with applicable laws, some background investigations may include a credit check. CGI will consider for employment qualified applicants with arrests and conviction records in accordance with all local regulations and ordinances.

CGI will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI’s legal duty to furnish information.

Posted 2025-09-29

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