Semantic Data Modeler

6 days ago

Hyderabad Pune Mumbai, India CRISIL Ltd Full time ₹ 20,00,000 - ₹ 25,00,000 per year

Semantic Data Modeler

Department

Corporate Group

Job Description

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 organization's strategy of "model once, leverage everywhere" for data standardization and AI readiness.

Experience & Qualifications & Skills

  • Bachelor's or master's 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 frameworks
Open Positions

1

Mandatory Skills

Ontology, Graph Databases, Taxonomy, Semantic Web, SKOS, OWL, RDF, Sparql, SQL, Relational Data Modelling

Education Qualification

Graduation

Experience

5 to 8 years

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