Data Mapping Analyst — Banking Migration

Data Mapping Analyst — Banking Migration

London / Milton/Keynes, United Kingdom | Posted on 06/01/2026

We are seeking an experienced Data Mapping Analyst to support a critical Banking Migration programme. You will play a keyrole in understanding banking application data, mapping data acrossworkstreams, and ensuring accurate and compliant migration from legacy systemsto new solutions. This is an onshore UK-based role with direct engagementacross engineering, business, and compliance stakeholders.

Key Responsibilities

• Develop a strong working knowledge of bankingapplications and the data underpinning them
• Translate migration requirements into detailed dataattributes across work streams
• Understand and manage data synchronisation and reconciliation across data transfer files
• Design and implement effective database queries tomatch, retrieve, and extract data
• Identify database structural requirements by evaluatingmigration operations, applications, and engineering
• Assess database implementation procedures for compliance with internal and external regulations
• Oversee the end-to-end migration of data from legacy systems to new platforms
• Support and provide consultancy to database engineering teams
• Recommend improvements to JCL queries and Oracle/Mainframe database queries

Required Skills & Experience

• Strong knowledge and understanding of bankingapplications and underlying data structures
• Demonstrable experience in data migration, includingETL tooling
• Solid understanding of data synchronisation and reconciliation across transfer files
• Ability to design and execute effective database queries (Oracle/Mainframe)
• Familiarity with JCL queries and legacy mainframeenvironments
• Understanding of regulatory compliance requirements ina banking context