Data Migration Developer

Hays is working with a large public‐sector transformation programme to recruit a Data Migration Developer. This is a data‐first role, requiring deep technical credibility rather than a pure governance‐led project manager. You will lead the end‐to‐end delivery of complex data migration activities, working closely with vendors, application teams, and integration specialists to ensure high‐quality, secure, and reliable data outcomes.

Key Responsibilities

Lead scoping, planning, mapping, and execution of large‐scale data migrations
Own data quality, cleansing, validation, and reconciliation
Work across multiple legacy systems and data formats (e.g. SQL, XML, HL7)
Challenge vendor approaches and manage data migration risks
Coordinate technical data specialists and report progress to senior stakeholders

Essential Experience

Proven background leading complex data migration work streams
Hands‐on understanding of data structures, formats, tooling, and validation
Experience managing high‐volume, poor‐quality, or complex datasets
Strong stakeholder engagement and vendor management skills

Why Apply?

Senior role with genuine technical ownership
Long‐term transformation programme with data at the core
Initial 6‐month contract with strong extension potential
Hybrid working model

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