Job Title: Principal Enterprise Data Architect – Semantic Web & Middleware

Location: Montreal, Canada - Hybrid

Duration: Contract

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Role Overview

We are seeking a visionary Principal Enterprise Data Architect to spearhead the design, governance, and scaling of our next-generation data platform. In this highly specialized role, you will lead the convergence of three critical domains: Semantic Web Technologies (RDF Triple Stores), Enterprise Middleware, and End-to-End Data Architecture.

You will design scalable knowledge graphs, construct the high-throughput middleware networks that route semantic data, and establish the overarching architectural blueprints that transform raw enterprise data into linked, machine-understandable assets.

?️ Core Responsibilities

Semantic Web & Ontological Engineering

- Design, implement, and scale production-grade RDF Triple Stores and Graph Databases to power enterprise knowledge graphs.
- Develop and govern semantic models, including core ontologies, taxonomies, and metadata vocabularies using OWL, RDFS, and SKOS.
- Optimize highly complex SPARQL queries, graph traversals, and semantic reasoning engines to ensure low-latency data access.

Middleware Architecture & Integration
- Architect enterprise middleware layers (message brokers, event-streaming fabrics, and API gateways) engineered specifically to handle linked data, RDF graphs, and JSON-LD payloads.
- Design robust ETL/ELT abstraction layers that map and lift structured, semi-structured, and relational data into semantic RDF triple formats (R2RML).
- Ensure high-availability (HA), replication, horizontal scaling, and disaster recovery configurations across all middleware runtime platforms and triple store clusters.

Strategic Data Architecture
- Define the long-term data architecture strategy, reference models, and technical standards across cloud,



hybrid, and on-premises environments.
- Enforce strong data governance frameworks, access controls, data provenance, and deterministic data lineage tracing protocols across graph structures.
- Collaborate with business executives, product owners, and engineering leads to turn architectural patterns into production-ready pipelines.

? Role Requirements

Technical Skills

Semantic Technologies & RDF

- Graph Ecosystems: Mastery of enterprise RDF Triple Stores and Graph Platforms (e.g., GraphDB, Stardog, Virtuoso, AWS Neptune, or Apache Jena).
- Graph Standards: Expert-level command of RDF, SPARQL, OWL, SHACL (for graph validation), and serialization formats (Turtle, JSON-LD, N-Triples).

Middleware & Infrastructure

- Event & Message Fabric: Deep experience with streaming and messaging systems (Apache Kafka, RabbitMQ, Confluent, or IBM MQ).
- Data Integration: Solid proficiency with data routing orchestration engines (e.g., Apache NiFi, Airflow, or MuleSoft) and semantic transformation frameworks.
- Programming: Competency in Python, Java, or Scala for building custom semantic connectors and middleware logic.

Core Data Architecture

- Data Modeling: Proven experience spanning relational modeling (RDBMS), NoSQL, dimensional modeling, and semantic graph modeling.
- Enterprise Practices: Familiarity with framework methodologies like TOGAF, Zachman, or SABSA.

Experience & Qualifications
- Education: Master’s or Bachelor’s degree in Computer Science, Data Science, Information Systems, or a related quantitative field.
- Experience: 8+ years in data engineering and architecture, with at least 3+ years designing production-grade semantic graph systems and middleware fabrics.
- Leadership: Exceptional cross-functional leadership and communication skills, with a track record of driving large-scale data transformation initiatives.

📌 Principal Enterprise Data Architect – Semantic Web & Middleware (Montreal)
🏢 KPG99
📍 Montreal