Senior ServiceNow CMDB/CSDM Architect

Location: Hybrid - Cambridge (2 days onsite per week)

Contract: 6 months

IR35: Inside IR35

Key Responsibilities

• Act as the technical design authority for a CMDB uplift programme.
• Assess and improve CMDB structure, CI classes, attributes, relationships, and CSDM alignment.
• Support service and application taxonomy remediation and simplification.
• Review and optimise ServiceNow IRE, source precedence, reconciliation rules, and data ownership.
• Define authoritative source rules and support integration onboarding controls.
• Review Discovery outputs and shape service to infrastructure mapping approaches.
• Advise on Service Mapping readiness, sequencing, and dependency modelling.
• Design technical controls for ownership, life cycle management, certification, and data quality.
• Guide duplicate, orphaned, and stale CI remediation activities.
• Define CMDB Health rules, dashboards, and data quality measures.
• Mentor internal ServiceNow specialists and provide knowledge transfer.

Required Experience

• Strong ServiceNow CMDB architecture experience.
• Hands on CSDM implementation, remediation, or uplift experience.
• CI class design and relationship modelling expertise.
• Strong knowledge of ServiceNow IRE, including identification rules, reconciliation rules, and source precedence.
• Experience with CMDB Health, duplicate management, and data quality controls.
• Experience with ServiceNow Discovery and discovered infrastructure relationships.
• Knowledge of Service Mapping concepts and implementation readiness.
• Experience with CMDB data source integrations.
• Experience implementing CMDB life cycle, ownership, and data quality controls.
• Experience working with existing CMDB environments requiring remediation and improvement.
• Ability to translate business and governance requirements into ServiceNow technical design.

Desirable Experience

• ServiceNow Certified Implementation Specialist certifications across Discovery, Service Mapping, ITOM, CMDB, or related modules.
• Experience with Service Graph Connectors.
• Cloud CMDB integration experience across Azure, AWS, or GCP.
• Experience with CNAPP or cloud security data feeding CMDB.
• ITIL SACM/ITSM experience.
• Experience in large enterprise or regulated environments.
• Experience mentoring internal teams during a transformation or uplift programme.