AWS Data Engineer - MigrationWe're seeking a strong & hands-on AWS Data Engineering contractor, ASAP start, for an urgent replacement contract  Rate: Up to £(Apply online only) per day, Outside IR35  Working Patterns: Remote-first, London (up to 1 day p/w on-site).  Contract: 3-6 months (likley extension) Sector: Financial Services About:  We're supporting a major cloud transformation programme focused on migrating a large-scale legacy ETL estate consiting of several thousand batch jobs from Ab Initio to a modern, serverless AWS data platform. This is a hands-on Senior Data Engineer role where you'll play a key part in defining migration patterns and delivering production-ready AWS Glue solutions.  Person Requirments: Strong AWS Data Engineer - ideally AWS Certified.  Idelaly, you'll bring proven experience delivering Ab Initio → AWS Glue (PySpark) migration programmes Strong hands-on AWS Data Engineering expertise, particularly AWS Glue, S3, Athena and serverless data platforms. Advanced Python, PySpark and SQL skills. Strong understanding of converting Ab Initio transformations/reformat logic into scalable PySpark solutions. Experience building and optimising large-scale ETL/data pipeline solutions in AWS. Excellent Spark performance tuning capabilities, including troubleshooting data skew, partitioning, memory and load-related issues. Strong data warehousing and data modelling knowledge Strong comminication skills.  Nice to Have Experience with Claude Code or AI-assisted code conversion tools. Amazon MWAA (Airflow) experience. AWS Certifications. Experience working on large-scale legacy modernisation programmes.Please apply now - this hiring process should be expected to finish by next week. Adam Akhtar