Senior Developer / Technical Lead to modernize legacy applications using .NET and Azure service[...]
S I Systems • toronto, on • Posted June 15, 2026
Position Overview
Senior Developer / Technical Lead to modernize legacy applications using .NET and Azure services_ Hybrid model
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 ...