Salary: £54,000 - 60,000 per year Requirements: Proven experience delivering data migration programmes Strong SQL skills and advanced data manipulation capability Experience reconciling high-volume transactional data Exposure to ITSM, Finance or Billing system migrations is highly desirable Comfortable working independently in a fast-paced environment Excellent documentation and validation discipline Responsibilities: Clean, deduplicate and validate large historical datasets Map legacy data structures to new system models Reconcile record counts and perform field-level validation Identify data that should not be migrated (e.g. obsolete, non-billable) Support test migrations, dry runs, UAT cycles and final cutover Manage incremental loads and controlled re-runs Document mapping decisions and migration logic clearly Collaborate closely with Development and Engineering teams to resolve data issues Support post-migration fixes with minimal business disruption Technologies: Support ITSM SQL ServiceNow More: We are supporting a fast-paced transformation programme for an established MSP/ISP that is replacing multiple core platforms. This role is vital to ensuring accurate, validated data migration across legacy and new systems, including migration from ServiceNow to Halo. We offer a dynamic work environment where you can contribute to significant projects with a dedicated team. last updated 7 week of 2026