Data Engineer

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.

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• 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.
  

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• 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.
  

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• 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.