Taxonomy & Ontology Curator

8 hours, 11 minutes ago

Slovenia, United Kingdom, Bulgaria, Croatia, Germany, Hungary, Ireland, Netherlands, Poland, Romania, Egypt, United Arab Emirates, Armenia

Full-time

Mid Level

Data Annotator

Data Science and Analytics

Generative AI LLM SQL

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Description

Onboard new entities into the Ads team Knowledge Graph in alignment with defined schemas and ontologies.
Serve as the primary point of contact for Product, Engineering, and Analytics teams requesting entity additions or schema changes.
Prioritize and triage incoming requests based on business impact, urgency, and technical feasibility.
Perform data entry and labeling to support automated content understanding pipelines.
Tune and refine LLM prompts to improve content understanding automation.
Review and curate LLM-generated entities by approving high-confidence outputs, correcting near-misses, and rejecting hallucinations.
Execute QA and validation to ensure ontological consistency and factual accuracy.
Create Golden Sets through targeted labeling to assess model quality and support classifier and extraction model fine-tuning.
Investigate and resolve data integrity issues, including error correction, duplicate entity merging, and relationship conflict resolution.
Provide stakeholder feedback, status updates, and modeling rationale, and guide teams on effective Knowledge Graph querying.

Requirements

3+ years of experience with Knowledge Graph.
Strong understanding of graph concepts, including nodes, edges, and properties.
Experience with taxonomy and ontology, including categorizing data, managing hierarchies, and understanding semantic relationships between entities.
Proficiency in navigating complex datasets.
Experience with SQL, SPARQL, or Cypher is a strong plus.
Understanding of how generative AI works and common failure modes such as hallucinations.
Understanding of the importance of ground-truth data in training.
This role is intended for a Data Analyst/entry-level profile rather than a Data Scientist or AI/ML engineer.
Ability to work remotely from Armenia, Bulgaria, Croatia, Egypt, Hungary, Poland, Romania, Slovenia, UAE, UK, Ireland, or the Netherlands.
Open to a 12–18 month contract or full-time employment.

Interested in this position?

Apply directly on the company website

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