Lead Data Migration Architect

Requirements

• This position will suit an architect who can operate across both enterprise data architecture and modern cloud‑native migration patterns, and who values precision, data quality, governance, and technical rigour
• Candidates must be eligible for SC clearance (existing SC clearance desirable; BPSS minimum required)
• Recent experience as a Lead Data Migration Architect, Lead Data Architect, or Data Solutions Architect in migration‑focused programmes
• Demonstrated ownership of end‑to‑end data migration strategy, execution, and testing assurance
• Experience operating in consulting, systems integration, or delivery partner roles
• Proven leadership of cross‑functional migration teams, including engineers, testers, and architects
• Experience working within UK Central Government or ALBs strongly preferred
• You will bring strong experience designing and delivering large‑scale data migration solutions, including:
• Designing end‑to‑end data migration architectures from legacy systems to cloud platforms
• Defining migration strategies including:
• Bulk data loads followed by incremental/delta processing
• Re‑platforming and repointing of data pipelines
• Leading migration programmes from legacy data warehouses to AWS Data Lakehouse architectures
• Designing migration frameworks covering:
• Data extraction, transformation, and loading (ETL/ELT)
• Data staging, reconciliation, and validation
• Migration orchestration and monitoring
• You will have strong, practical experience defining and overseeing data engineering testing within migration programmes, including:
• Testing end‑to‑end ETL/ELT data pipelines on AWS, including AWS Glue‑based solutions
• Validating data feed pipeline migrations, including repointing pipelines to new AWS Data Lakehouse architectures
• Overseeing testing of pipelines underpinned by:
• AI ETL accelerators
• Python / PySpark
• SQL transformations
• YAML‑driven configuration frameworks
• Validating bulk migration loads followed by incremental/delta data processing from legacy data warehouses
• Defining and implementing:
• Data reconciliation frameworks
• Data completeness and accuracy checks
• Transformation validation rules
• Regression testing across migration cycles
• Establishing automated testing frameworks for large‑scale data migration assurance
• Strong experience with AWS cloud‑native data platforms, including:
• AWS Glue
• S3‑based data lakes
• Lakehouse architectures using Apache Iceberg
• Familiarity with:
• Data lake and lakehouse patterns
• Event‑driven and streaming architectures (where relevant to migration)
• Understanding of where modern migration approaches add value vs traditional ETL patterns

What the job involves

• We are seeking a Lead Data Migration Architect to lead the design, assurance, and delivery of secure, cloud‑based data migration solutions for UK Central Government departments
• The role combines architectural strategy with hands‑on migration delivery oversight and testing governance—shaping target‑state data platforms while ensuring data is migrated accurately, securely, and efficiently within regulated, security‑conscious environments
• This role places a strong emphasis on data migration validation, ETL testing, and pipeline assurance, particularly within AWS‑based Data Lakehouse architectures
• You will be responsible for defining and governing end‑to‑end migration testing strategies, ensuring successful transition of data from legacy data warehouses to modern cloud platforms

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