Senior Developer / Technical Lead to modernize legacy applications using.NET and Azure services_ Hybrid model

S.i. Systems · Toronto, Ontario, Canada

Location

Toronto

Job Type

Contract

Posted

June 19, 2026

Job Description

Our technology client is seeking a Senior Developer / Technical Lead to modernize legacy applications using .NET and Azure services
Join a high-impact team driving modernization and application design initiatives within a dynamic hybrid environment. This role leads full-stack development and refactoring across modern .NET and Azure cloud solutions while supporting critical legacy systems. Candidates will play a key part in architecting scalable services and delivering robust enterprise-grade solutions over a 6‑month engagement based in Concord, Ontario
Contract, Concord, Hybrid, Working Hours: EST
Must Haves
8+ years in **enterprise** .NET and C# **application development** with RESTful APIs and service-based architecture
Proficiency with SQL Server, T‑SQL, and structured data formats such as JSON and XML
Hands‑on experience delivering on Azure App Services, Azure Functi...
        

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