Senior C#/.NET Developer with enterprise desktop application, SQL Server performance tuning, WPF/MVVM, Web API, and complex workflow application experience
Duration: 6 Months
Location: Mississauga (Hybrid, 1-2x/week)
Our pharmacy technology client is seeking a Senior C#/.NET Developer to support complex enterprise desktop application development, modernization, SQL Server migration/stabilization, and ongoing enhancement work across a large pharmacy/POS application environment. The ideal candidate is a highly self-directed developer with strong C#/.NET, SQL Server, desktop application, API, and database performance experience who can quickly understand complex workflows, read technical/business documentation, and deliver in a fast-paced Agile environment with limited hand-holding.
Must Haves:
1. 8+ years of hands-on C# / .NET development experience
2. Strong experience building or enhancing complex enterprise desktop applications
3. Strong SQL Server development experience, including query optimization and performance tuning
4. Experience working with large applications involving complex workflows, multiple screens/modules, and business logic dependencies
5. Ability to read technical/business documentation and independently determine required development changes
6. Strong problem-solving skills and ability to ramp quickly in unfamiliar application environments
7. Experience with Web API / service integration
8. Experience working in Agile delivery environments
9. Strong communication skills; able to ask clear questions, process information quickly, and work proactively
10. Azure DevOps, source control, CI/CD, or similar modern development tooling
Nice-to-haves:
11. WPF / MVVM / Prism experience
12. Experience modernizing or stabilizing legacy desktop applications
13. Experience with POS, pharmacy, retail, inventory, claims, healthcare, or other complex transaction/workflow systems
14. Experience supporting SQL migration, database remediation, or post-migration performance tuning
15. Windows Services
16. Dapper / LINQ
17. Telerik Controls
18. OAuth 2.0
19. RDLC / SQL reporting
20. Application configuration, deployment, VM/local environment setup, or client installation experience