SQL Developer (C#) (Contract) - Inside IR35 - £600/day - 3 days onsite An experienced SQL Developer (C#) is required to support and enhance a business-critical Back End estate across warehousing and E-commerce order/inventory flows. This is a delivery-focused contract where reliability, data accuracy, and integration stability are key. Contract details £600 per day (Inside IR35) 3 days per week onsite Contract assignment (start ASAP subject to onboarding) What you''ll be doing Developing and optimising SQL Server solutions (T-SQL, stored procedures, functions, indexing, performance tuning) Building and supporting C#/.NET Back End services and internal tools Delivering and maintaining integrations (REST and SOAP APIs) Creating and supporting ETL/data synchronisation processes across systems Supporting high-volume transactional data (orders, stock movements, inventory updates) Troubleshooting production issues and improving stability and data quality What we''re looking for Essential Strong commercial SQL Server and T-SQL development Strong C#/.NET Back End experience Proven experience with API integrations (REST/SOAP) Experience delivering data sync/ETL solutions (SSIS and/or Azure Data Factory beneficial) Comfortable working in a live operational environment (support, troubleshooting, performance) Desirable Warehousing/inventory/order management system exposure Ecommerce platform integration exposure Azure DevOps/CI/CD experience If you''re interested, please share ..... full job details .....