Crisil - Semantic Data Modeler

Job description :

We are seeking a highly skilled Semantic Data Modeler to join our data and AI team. This role will focus on designing and implementing canonical models, ontologies, and taxonomies to enable a unified semantic layer that bridges structured data from multiple silos (RDBMS and other sources) into AI-ready, knowledge-driven assets. The ideal candidate will bring expertise in both traditional data modeling (SQL, ER modeling) and semantic / knowledge representation (ontologies, RDF, OWL, SKOS), along with hands-on experience in leading ontology and taxonomy management tools.

Key Responsibilities

• Design, develop, and maintain ontologies, taxonomies, and knowledge graphs to support enterprise-wide semantic data integration.
• Build a semantic abstraction layer that maps and harmonizes relational data (SQL / RDBMS) into AI-ready semantic structures.
• Define and govern canonical data vocabularies across domains to ensure consistency, interoperability, and reuse.
• Collaborate with data engineers, data scientists, and business stakeholders to model concepts that align with business needs and AI / ML initiatives.
• Leverage ontology and taxonomy management tools (e.g., TopBraid Composer, PoolParty, Protégé, VocBench) for design, validation, and publishing.
• Develop mapping strategies from ER models / logical data models to RDF / OWL-based ontologies leveraging Linked Data Modelling Language.
• Ensure models adhere to semantic standards (RDF, OWL, SKOS, SHACL, SPARQL) and align with Unified enterprise architecture principles.
• Support data cataloging, metadata enrichment, and semantic search through ontology-driven approaches.
• Contribute to the organizations strategy of model once, leverage everywhere for data standardization and AI & Qualifications & Skills :
• Bachelors or masters degree in computer science, Information Systems, Data Science or related field.
• 5-8 Years of total experience in data modeling or information architecture or Data engineering.
• Minimum 3+ years of hands-on experience in ontology / taxonomy development and semantic technologies.
• Practical experience in ontology engineering tools such as : TopBraid Composer, PoolParty, Protégé (or similar)
• Strong background in SQL, relational data modeling, and ER modeling.
• Proven expertise in ontology engineering and taxonomy development using RDF, OWL, SKOS.
• Solid understanding of semantic technologies (SPARQL, SHACL, R2RML, Knowledge Graphs).
• Experience integrating relational data / schemas into semantic / Knowledge graphs
• Familiarity with data integration patterns, metadata management, and data catalogs.
• Excellent problem-solving, communication, and collaboration skills.

Nice to Have : Python, RML / R2RML Mappings, Linked Data modelling Language or other modeling Skills : Ontology, Graph Databases, Taxonomy, Semantic Web, SKOS, OWL, RDF, Sparql, SQL, Relational Data Modelling

(ref : hirist.tech)