Crisil - Semantic Data Modeler

1 week ago

Mumbai, Maharashtra, India CRISIL LIMITED Full time ₹ 20,00,000 - ₹ 25,00,000 per year

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 readiness.


Experience & Qualifications & Skills :

- Bachelors or masters degree in computer science, Information Systems, Data Science or related field.

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


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

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