Cynet Systems invites a Senior C# Backend Developer to Montreal, QC, on a contract basis. The role centers on backend/server-side development and standalone desktop applications, leveraging multithreading, data structures, and algorithms to boost performance. The ideal candidate brings expert C# and Visual Studio skills, plus solid SQL Server experience and familiarity with gRPC, NHibernate, WinForms, WCF, REST API, and Swagger. TDD/BDD experience and mentoring others are valued traits.