 
        
        We are seeking a skilled Subject Matter Expert (SME) & Data Engineer with a strong focus on data modelling, mapping, and transformation to join our Big Data Services team within the Hybrid Cloud & Data service line. This role will involve collaborating with cross-functional teams to define, implement, and validate data integration and transformation requirements across a range of structured and semi-structured data sources.
Key Responsibilities
 * Analyse source and target data formats and structures (e.g., databases, XML, JSON, CSV, EDI) to define and document accurate and effective data mappings.
 * Develop and maintain data mapping specifications, transformation logic, and integration rules based on business and technical requirements.
 * Work closely with data architects, domain experts, and business analysts to ensure semantic alignment and consistency between systems.
 * Validate mapping outputs and troubleshoot discrepancies or issues in data transformations.
 * Create and maintain documentation to support data traceability, governance, and reusability.
 * Ensure all data processing activities comply with relevant data quality, security, and privacy standards.
Required Skills & Experience
 * UK National (Must have active BPSS Clearance).
 * Proven experience in roles involving data mapping, transformation, or integration (e.g., data analyst, technical business analyst, data engineer).
 * Strong hands-on expertise with data formats including XML, JSON, CSV, EDI, XLSX.
 * Ability to interpret complex data structures and translate them into robust mapping and transformation specifications.
 * Strong attention to detail and ability to manage data-related documentation for governance and compliance.
Nice to Have
 * Experience with ETL or data integration tools such as Informatica, Talend, Apache Nifi, SSIS, or Boomi.
 * Familiarity with data mapping documentation methodologies or modelling tools such as Excel-based mapping specs, BPMN, or UML.
 * Understanding of data architecture principles and metadata management.