''sQL Data Engineer (SQL Server, Python, DBA) Location: Remote- Some travel to LondonContract: ContractRate: £550-£600 Per Day- Outside IR35 We are currently looking for an experienced SQL Data Engineer to support the ongoing development and stability of a critical data platform. This role sits within an established technology team and focuses on BAU data engineering, database optimisation and ongoing data migration activity. The successful contractor will combine strong SQL development with hands on DBA capability, ensuring databases remain secure, performant and reliable while supporting continuous improvements to the wider data estate. This is an excellent opportunity for a pragmatic engineer who enjoys working on live production systems while helping evolve data architecture over time. Key Responsibilities Design, build and maintain SQL-based data solutions supporting business critical applications Develop and optimise stored procedures, queries and data access patterns Work with JSON and semi-structured data within relational databases Support ongoing data migration and modernisation initiatives Validate data quality, reconciliation and completeness during migration activities Manage database performance tuning, indexing and optimisation Ensure operational stability including backup, restore and recovery processes Use Python for automation, data validation and processing tasks Support controlled database releases and CI/CD pipelines Contribute to impr