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idpp

Data Migration Specialist

Hybrid

London, United kingdom

£ 150,000 /year

Freelance

11-02-2026

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Skills

Go Data Governance Quality Management Architecture Risk Assessment

Job Specifications

Data Migration Expert (Cards Processing)

Contract: 12 Months

Location: London (Hybrid)

£700.00 per day inside IR35

Overview

We are looking for a highly experienced Data Migration Expert to lead the end-to-end data migration for a major cards processor transformation programme. This role is pivotal in ensuring the accurate, complete, and controlled migration of customer, account, card, and transaction data from the existing processor to a new target platform with minimal customer and operational impact.

You will own the migration strategy, execution approach, reconciliation framework, and cutover readiness across multiple migration cycles, working closely with technology, data, testing, operations, and governance teams.

Key Responsibilities

Lead the design and execution of end-to-end data migration for the cards processor
Define migration strategy, scope, and cutover approaches across card portfolios including:
Customers and accounts
Cards and limits
Transactions and authorisations history
Fraud data and risk indicators
Disputes and chargebacks
Establish robust reconciliation frameworks to ensure accuracy, completeness, and integrity of migrated data
Plan and execute iterative migration cycles including:
Mock migrations
Dress rehearsals
Parallel runs
Lessons-learned incorporation into final cutover
Own data extraction, transformation, migration, and reconciliation processes between legacy and target processors
Ensure compliance with:
Bank data governance standards
Audit and evidence requirements
GDPR obligations
Card-scheme data retention and traceability requirements
Provide transparent reporting on migration readiness, data quality metrics, risks, and go/no-go recommendations to senior stakeholders
Work closely with testing, integration, production support, and operational teams to assure migration stability and customer impact mitigation

Skills & Experience Required

Proven experience leading large-scale data migration within cards processing or payments environments
Deep understanding of cards data structures across the full lifecycle (customer, account, card, transaction, fraud, disputes)
Experience migrating between card processors or during processor transformation programmes
Strong expertise in data reconciliation, data quality management, and migration assurance
Experience planning and executing multiple migration rehearsals and parallel run strategies
Strong understanding of regulatory, GDPR, audit, and card-scheme data obligations
Ability to provide clear risk assessment and migration readiness reporting to senior stakeholders
Excellent stakeholder collaboration across data, technology, testing, and operations teams

Desirable

Experience with major card processor platforms (e.g., TSYS, FIS, First Data, Global Payments, OpenWay)
Familiarity with data tooling, ETL frameworks, and large-scale data validation techniques
Experience working within complex banking architecture and governance environments

About the Company

Our mark, your success. IDPP has been established for over 37 years, and during that time we have become experts in the IT and Telecoms industries supporting customers with a variety of bespoke services. Initially providing only contingency resources, IDPP began to reinvent itself some 5 years ago by moving into the services arena with the provision of fixed price projects and work package solutions. A brief synopsis of our current client services includes:- -Fixed Priced Project & Work Packages -Managed Services -Contra... Know more