Ref: RQ11575Contract – 12 Months (Extension Possible) Onsite – Toronto (595 Bay St.)Posted Date: Location: Onsite – Toronto (595 Bay St.)Public Sector Experience: Required – OPS / Public SectorContract End Date: *Rate: $109/hourOverviewLotus is seeking a Senior Data Architect/Modeller to join the Government Services Integration Cluster under the Ministry of Public and Business Service Delivery and Procurement. In this role, you will design and implement enterprise-level data architectures in a complex distributed setting, supporting interoperability, information exchange, and data sharing across multiple business domains. You will work closely with business and technical stakeholders to develop canonical, semantic, and common data models that align with enterprise strategy and data governance objectives.Key ResponsibilitiesDevelop and implement data architecture for application development in complex and distributed environments, including data flow, database locations, and data access methodsDevelop conceptual, logical, and physical data models to support enterprise data strategiesCreate and maintain enterprise, common, canonical, and domain data models that enable interoperability and information exchange across multiple business domainsDevelop semantic data models, controlled vocabularies, business glossaries, canonical business definitions, reference data structures, and semantic relationship modelsDefine business entities, relationships, hierarchies, attributes, and business rules to support data governanceFacilitate business and technical workshops to define and reconcile business terminology, entities, relationships, and canonical definitionsApply domain-driven modelling and business capability analysis to develop common data modelsEstablish modelling standards, naming conventions,



and metadata requirementsDesign reference data and master data structures to support data integration and modernization initiativesDevelop architecture artefacts and checkpoint deliverables with traceability to business architecture requirementsSupport data migration, integration, and modernization initiativesProvide data interoperability and information exchange recommendations aligned with enterprise architecture governance processesMust-Have RequirementsDemonstrated hands-on experience developing conceptual, logical, and physical data modelsExtensive experience developing enterprise, common, canonical, and domain data models that support interoperability, information exchange, and data sharing across multiple business domainsDeep knowledge of data architecture principles, methodologies, standards, and best practicesDemonstrated experience establishing common business definitions, controlled vocabularies, semantic models, and common data models to support interoperability, information sharing, and enterprise data governanceExperience facilitating business and technical workshops to define and reconcile business terminology, business entities, relationships, and canonical definitionsExperience using data modelling tools such as ERwin, PowerDesigner, Visio, or equivalent CASE toolsExperience developing semantic data models, business glossaries, controlled vocabularies, and reference data modelsExperience establishing modelling standards, naming conventions, and metadata requirementsExperience supporting data migration, integration,



and modernization initiativesKnowledge of metadata management, data lineage, and data governance principlesStrong analytical, problem-solving, and written/verbal communication skillsExperience with at least two different platforms, operating systems, environments, database technologies, languages, or communications protocolsNice-to-Have SkillsExperience developing common data models, business vocabularies, and semantic frameworks for regulatory, permitting, licensing, compliance, or public-sector programs involving multiple business domainsExperience with semantic modelling, ontology development, or knowledge graph conceptsKnowledge of RDF, OWL, graph databases, or semantic technologiesExperience with Databricks, Neo4j, Denodo, or equivalent data platformsExperience with metadata repositories and governance solutionsKnowledge of Information Management principles, concepts, policies, and practicesKnowledge and understanding of AODA and related standardsExperience supporting permitting, regulatory, licensing, or public sector business domainsExperience with middleware and gatewaysKnowledge of object-oriented analysis and design techniquesExperience developing enterprise architecture deliverables based on Ontario Government Enterprise Architecture processes and practicesWork EnvironmentThis is a fully onsite role based at 595 Bay St., Toronto, 5 days per week. No security clearance is required. The role operates within the Government Services Integration Cluster and involves close collaboration with business and technical stakeholders across multiple ministries and business domains.Final role details, responsibilities, and terms will be confirmed with shortlisted candidates. Compensation may vary based on experience. Errors and omissions excepted.#J-18808-Ljbffr

📌 Data Architect/Modeller (Toronto)
🏢 Lotus IT Solutions
📍 Toronto