Knowledge Graph Engineer

AddSource; Irving (TX); Hybrid; USD 120,000 - 170,000; Full time

Benefits offered by this job

Hybrid work schedule

Job summary

AddSource is seeking an experienced Sr. Knowledge Graph Engineer to design enterprise semantic data models, ontologies, and Stardog-based Knowledge Graphs for AI-driven contract and invoice intelligence. Hybrid role in Irving, TX.

You will map contracts, invoices, vendors, and payments into semantic models, develop SPARQL queries, enable semantic search and reasoning, and build scalable graph-based solutions to support Gen AI and enterprise analytics.

Qualifications

• Design and implement enterprise semantic data models, ontologies, and Knowledge Graphs.
• Develop SPARQL queries and enable semantic search, reasoning, and Data Discovery.

Responsibilities

• Map contracts, invoices, vendors and payments into semantic models.
• Create ontology-driven business rules and scalable graph-based solutions.
• Configure and manage Stardog environment and RDF/OWL ontologies.
• Develop data pipelines to ingest structured and unstructured data into Databricks.

Skills

Stardog

Knowledge Graph

Ontology Modelling

Semantic Technologies

Databricks

PySpark

SQL

Python

REST APIs

Cloud Platforms

Education

Engineering Degree

Tools

Stardog

Databricks

OWL/RDF

SPARQL

Job description

Role: Sr. Knowledge Graph EngineerSeeking an experienced

Role: Sr. Knowledge Graph EngineerSeeking an experienced Knowledge Graph Engineer to design and implement enterprise semantic data models, ontologies, and Stardog-based Knowledge Graphs that enable AI-driven contract and invoice intelligence through semantic search, Graph RAG, Agentic AI, and contextual data relationships to join our team in Irving, TX.Experience: - Min 8+ YearsLocation: - Irving, TX (Hybrid 3 days Work from Office)Educational Qualifications: -Engineering Degree BE/ME/BTech/MTech/BSc/MSc. Technical certification in multiple technologies is desirable.Skills: -Mandatory SkillsResponsibilities include mapping contract, invoice, vendor, and payment entities into semantic models, developing SPARQL queries, enabling semantic search and reasoning capabilities, and supporting AI-driven data discovery. The role also involves creating scalable graph-based solutions that support Gen AI, Agentic AI, and enterprise analytics use cases through semantic enrichment and contextual data relationships. Knowledge Graph Development Design enterprise knowledge graph architecture. Develop semantic data models and ontologies. Build entity relationship models across: Contracts Invoices Vendors Purchase Orders Cost Centers Approval Workflows Create ontology-driven business rules. Stardog Development Configure and manage Stardog environment. Develop and optimize: RDF Models OWL Ontologies SPARQL Queries Graph Analytics Implement semantic reasoning and inferencing. Databricks Integration Ingest structured and unstructured data into Databricks. Build pipelines for Contract and Invoice data. Create mappings from relational models to knowledge graph structures. Implement automated graph population processes. Semantic AI Enablement Support Gen AI and Agentic AI solutions through enterprise knowledge graph integration. Enable contextual retrieval and semantic search capabilities. Build graph-based RAG solutions. Data Governance Define taxonomy, metadata, and ontology governance standards. Establish semantic data quality frameworks. Maintain lineage and traceability of business entities.Required Skills Semantic Technologies Stardog RDF OWL SPARQL Knowledge Graph Development Ontology Design Semantic Modeling Data Engineering Databricks PySpark SQL ETL/ELT Design Data Modeling Programming Python REST APIs Cloud Platforms Azure (Preferred) AWS GCP Graph RAG Architecture Gen AI & Knowledge Graph Integration Enterprise Data Governance Contract & Invoice Domain Knowledge Taxonomy and Semantic Layer Design Azure Cloud Platform Master Data Management (MDM)SkillsStardog, Knowledge Graph, Ontology Modelling, Semantic Technologies, Databricks, Stardog Platform Administration & Development, Ontology Design & Semantic Modelling, RDF, OWL, SPARQL Knowledge Graph Development, Databricks, PySpark, SQL, Python Development, Data Modelling and Metadata Management, Graph-based Data Integration VeeRteq Solutions is an Equal Opportunity Employer