System Soft Technologies is seeking a senior software engineer in Mississauga (ON) to lead the design and implementation of scalable backend and frontend systems. The role requires deep expertise in .NET, React, Azure, and microservices, with a robust emphasis on design patterns, REST APIs, and performance optimization.You will work across multiple teams in a production environment, contributing to API design, data modeling, and cloud deployment. #J-18808-Ljbffr