Knowledge and Ontology Engineer

Visilayer; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Visilayer is seeking a Knowledge Architect to design taxonomies, ontologies, and model-driven knowledge for AI-driven discovery. You will translate messy client data into clean, machine-readable knowledge and map it to schema.org formats. Collaborate with engineering to ship robust knowledge graphs across multi-location deployments.

The role requires strong background in knowledge representation, data modeling, and experience with JSON-LD or RDF, and remote US-based work is supported.

Qualifications

• Background in knowledge representation, ontologies, taxonomies, or data modeling.
• Ability to translate messy real-world information into clean, consistent models.
• Comfort with structured data formats such as JSON, JSON-LD, RDF.

Responsibilities

• Design and maintain taxonomies and ontologies across client industries.
• Model messy client facts into machine-readable knowledge.
• Define mappings to schema.org and AI-consumable formats.
• Tag and quality-check client content against taxonomy.
• Build and refine predicate and relationship library.
• Collaborate with engineering to turn models into product.

Skills

Knowledge representation

Ontologies

Taxonomies

Linguistics/Data modeling

Structured data formats (JSON, JSON-LD

Schema.org familiarity

Knowledge graphs / Neo4j

Ambiguity to detail

Tools

Neo4j

Semantic Web tools

JSON-LD

Job description

Visilayer is the AI Recommendation Layer company. AI systems now decide which businesses get discovered, compared, and recommended, and most businesses are invisible or described incorrectly in those answers. We build the structured knowledge infrastructure that lets AI understand, compare, and accurately represent a business, so our clients are read correctly, completely, and confidently. The category is only just forming, and the people who join now will help define it.

The role

Design the structured knowledge that makes Visilayer work, the taxonomies, ontologies, and fact models, and tag client content against them so AI systems can read, compare, and cite it. This is Visilayer's differentiator.

What you will do

• Design and maintain the taxonomies and ontologies across client industries.
• Model messy real world client facts into clean, machine readable knowledge.
• Define how facts map to schema.org and to the formats AI systems consume.
• Tag and quality check client content against the taxonomy.
• Build and refine the predicate and relationship library.
• Partner with engineering to turn the models into product, and with strategy to keep them grounded in client need.

What we are looking for

• Background in knowledge representation, ontologies, taxonomies, library and information science, linguistics, or data modeling.
• A rigorous, structured thinker who is comfortable with both ambiguity and detail.
• Able to translate messy real world information into clean, consistent models.
• Comfortable with structured data formats such as JSON, JSON-LD, and RDF concepts.
• Experience with knowledge graphs, Neo4j, or semantic web tools.
• Familiarity with schema.org and with search or AI visibility.
• Domain knowledge in hospitality or multi location business.

Why Visilayer

Visilayer is early and small, which means real ownership, a short line from your work to the result, and the chance to help shape a brand new category rather than maintain an old one. We work remotely across the United States.

Visilayer is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, genetic information, or any other characteristic protected by law. If you need a reasonable accommodation to apply, email [e-mail] .