Source Code in Toronto is seeking a Sr. Software Developer - ETL for a 1-year onsite contract. You will lead end-to-end data migration from legacy systems, design interfaces, and ensure data integrity across Oracle, MS SQL Server and Azure SQL Database. The role requires senior ETL expertise, solid SQL, and client-facing collaboration. Responsibilities include data profiling, mapping, mock conversions, and post-migration reconciliation, with scope spanning complex data sources and files