Senior Full-Stack QE — AI-Driven Mobile & API Testing

S.I. Systems Ltd. is seeking a Senior Full Stack Quality Engineer to join an Agile delivery team in Toronto. You will own end-to-end quality across mobile UI, APIs, data flows, and database validation with advanced automation and AI-enabled testing tools.

The role focuses on building automation frameworks, performing API and data validation, and collaborating with cross-functional teams to improve product quality. On-site in Downtown Toronto for a 12-month contract start Oct 2026.