IT & Software

Implementation Manager - Mainframe Product Migration

NTT DATA

London · Greater London · United Kingdom

Overview

In this role, you will plan and execute end-to-end implementation of a mainframe migration into production, ensuring a controlled cutover. You lead integrated deployment, readiness, and go/no-go governance across technology, operations, business, and vendors. You will drive readiness, data migration activities, and post-go-live support, with a focus on risk, compliance, and efficient handover to BAU. This is a high-impact, cross-functional role that shapes large-scale legacy migrations in a regulated environment.

Pay / Benefits
  • comprehensive benefits package
  • health and wellbeing prioritized
  • hybrid work model
  • competitive salary
Responsibilities
  • Develop and maintain the integrated deployment/cutover plan (scope, approach, timeline, dependencies, critical path)
  • Lead cutover planning with detailed runbooks, rehearsals, roles, communications, and contingency plans
  • Coordinate release and change management activities (CAB submissions, approvals, change records, signoffs)
  • Drive environment readiness (capacity, access, monitoring, scheduling, support model, service transition)
  • Manage data migration activities with sequencing, validation, reconciliation, and controls
  • Orchestrate dress rehearsals and extract lessons to harden runbooks
  • Oversee governance activities (readiness reviews, RAID logs, executive reporting)
  • Coordinate hypercare/post-go-live activities (incident triage, backlog, stabilisation, handover to BAU)
  • Ensure alignment with risk/compliance/audit requirements and third-party/vendor management
Key requirements
  • Proven experience in implementation/cutover/deployment management for mainframe or large-scale legacy migrations
  • Solid knowledge of z/OS production operations, batch cycles, scheduling, DB2/IMS, CICS, and resilience/DR practices
  • Experience running dress rehearsals, cross-team cutovers, and leading go/no-go forums
  • Working knowledge of ITIL-aligned change, release, and incident management in regulated environments
  • Excellent planning and dependency management
  • Calm, clear leadership under high-pressure cutovers
  • Strong stakeholder management across technology, operations, business, risk/compliance, and suppliers
  • MS Project
  • Smartsheet
  • Jira

Reference: WJ-747_30451256

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