Ontology Engineer

Wissen Technology is hiring forOntology Engineer / Ontologist

About WissenTechnology:

At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide. Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Today, Wissen Technology has a global footprint with 2000+ employees across offices in the US, UK, UAE, India, and Australia. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality. We don't just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more. Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.

Job Summary:We are looking for a skilled Ontologist / Ontology Engineer with strong expertise in formal ontology design, semantic technologies, and knowledge representation. The ideal candidate will be responsible for designing, developing, and maintaining scalable ontologies aligned with business requirements.

Experience: 8-12 Years

Location: Mumbai|| Pune

Mode of Work:Hybrid

Key Responsibilities:

Formal Ontology Theory

• Strong understanding of Description Logics and OWL profiles (EL, QL, RL, DL)
  
• Knowledge of open-world vs. closed-world assumptions
  
  

Taxonomy & Classification Design

• Ability to design clean and scalable rdfs:subClassOf hierarchies
  
• Ensure proper use of disjointness, equivalence classes, and avoid cycles/redundancy
  
  

Domain Modeling

• Strong judgment in deciding when to create a class, property, named individual, or SKOS concept
  
  

SHACL / Constraint Modeling

• Translate business rules into SHACL shapes
  
• Handle cardinality constraints, required vs. multi-valued fields, controlled vocabularies, and severity levels
  
  

Cross-Ontology Integration

• Experience in aligning, importing, and extending ontologies across teams
  
• Maintain proper import boundaries and consistency
  
  

Controlled Vocabulary & Naming Standards

• Define consistent IRI patterns and prefix governance
  
• Proper use of skos:prefLabel, skos:altLabel, and skos:definition
  
  

Competency Question–Driven Design

• Ability to gather requirements using competency questions
  
• Map business questions to ontology axioms and relationships
  
  

Versioning & Change Management

• Manage ontology evolution and versioning
  
• Handle deprecation (owl:deprecated), backward compatibility, and migration impact
  
  

Tool Proficiency

• Hands-on experience with ontology design tools (e.g., Protégé or similar)
  
  

Required Skills and Qualification

• Strong knowledge of OWL, RDF, RDFS, SKOS, and SHACL
  
• Experience with semantic web technologies
  
• Strong analytical and problem-solving skills
  
  

Good to have Skills

• Experience working in enterprise data/knowledge graph environments
  
• Understanding of data integration and semantic interoperability