Banking Legacy Modernization Programme Lead

Acuity Analytics; Greater London; On-site; GBP 110,000 - 180,000; Full time

Job summary

Senior Programme Manager for Acuity Analytics leads an enterprise legacy modernization programme within Banking & Capital Markets. You will drive end-to-end delivery of critical platforms, data flows, and integrations to ensure continuity, compliance, and measurable business outcomes.

The role requires steering large-scale transformations across complex environments, including mainframe modernization, data migration, API-led integration, and cloud or hybrid adoption, with strong governance and

Qualifications

• Extensive experience leading large-scale legacy modernization across complex enterprise environments.
• Experience with mainframe or monolithic platform modernization, data migration, and API-led integration.
• Strong governance, risk management, and executive communication skills.
• Ability to coordinate cross-functional teams across business, architecture, engineering, QA, DevOps, data, cyber security.

Responsibilities

• Lead overall planning, governance, coordination, and execution of an enterprise legacy modernization programme across business, technology, data, infrastructure, risk, compliance, operations, and vendor workstreams.
• Define and maintain the integrated modernization roadmap, sequencing strategy, milestone plan, dependency map, RAID register, delivery calendar, and benefits tracking approach.
• Partner with architecture, engineering, data, security, infrastructure, and business teams to align modernization scope across rehost, replatform, refactor, re-architect, rebuild, replace, retain, data migration, integration, and decommissioning decisions.
• Establish and run programme governance forums, including steering updates, design authority reviews, architecture decision forums, delivery checkpoints, RAID reviews, readiness reviews, and escalation management.
• Coordinate modernization delivery across application remediation, data migration, cloud or hybrid platform enablement, integration redesign, API adoption, testing, performance validation, security controls, and operational readiness.
• Manage senior stakeholder communication, expectations, approvals, funding decisions, prioritisation trade-offs, and alignment across client leadership, internal leadership, delivery teams, vendors, and implementation partners.
• Own client expectation management by maintaining transparent communication, clarifying scope and priorities, aligning delivery commitments, managing escalations, and ensuring stakeholder confidence throughout modernization delivery.
• Track programme risks, issues, assumptions, dependencies, actions, architecture decisions, data risks, cutover risks, regulatory impacts, and operational constraints, ensuring timely mitigation and clear ownership.
• Drive programme-level financial, resource, scope, schedule, quality, benefits, capacity, vendor deliverable, and dependency tracking to support informed leadership decisions.
• Support target operating model documentation, role clarity, team mobilisation, onboarding, knowledge transfer, service transition, and business-as-usual handover planning.
• Ensure modernization execution follows agreed engineering, security, data governance, documentation, compliance, change control, release management, audit readiness, and quality standards.
• Facilitate cross-workstream planning, prioritisation, dependency resolution, integrated test planning, migration rehearsal governance, go-live readiness, cutover planning, rollback planning, and hyper-care coordination.
• Coordinate legacy platform coexistence, transition states, service continuity, operational resilience, production stability, and phased legacy retirement or decommissioning activities.
• Monitor progress against outcomes, milestones, benefits, risks, technical readiness, business readiness, regulatory commitments, and stakeholder decisions, providing clear and timely executive reporting.
• Promote continuous improvement in modernization governance, delivery predictability, reporting quality, engineering discipline, collaboration, and sustainable adoption of modernized capabilities.

Skills

Cloud / hybrid migration

Stakeholder management

Job description

Senior Programme Manager for Acuity Analytics leads an enterprise legacy modernization programme within Banking & Capital Markets. You will drive end-to-end delivery of critical platforms, data flows, and integrations to ensure continuity, compliance, and measurable business outcomes.

The role requires steering large-scale transformations across complex environments, including mainframe modernization, data migration, API-led integration, and cloud or hybrid adoption, with strong governance and