Data Analyst Location: Dunstable (2 days per week onsite)Duration: 3 Month ContractStart Date: ASAPRate: £478 per day Inside IR35OverviewWe are seeking an experienced Data Analyst to join a business-critical Martech transformation project. The successful candidate will play a key role in analysing, reconciling, and consolidating large-scale customer data sets across multiple systems to support the migration into a new marketing technology environment.This is an exciting opportunity for a proactive and technically strong analyst who enjoys solving complex data challenges and working with large volumes of customer data.Key ResponsibilitiesPerform detailed analysis and reconciliation of customer data across multiple source systems.Work with large-scale datasets (40M+ records) to identify discrepancies, data quality issues, and opportunities for consolidation.Support the creation of a single, accurate, and trusted customer dataset for migration into a new Martech platform.Develop and execute complex SQL queries to extract, manipulate, validate, and reconcile data.Collaborate closely with business and technical stakeholders to understand data structures, mappings, and migration requirements.Conduct data validation and quality assurance activities throughout the project lifecycle.Produce clear analysis, documentation, and recommendations to support decision-making.Support ongoing improvements to data processes and methodologies.Essential Skills and ExperienceStrong commercial ..... full job details .....