Online Developer H/F

Senior Dotnet Developer KogniVera Nuevo León, Mexico (Hybrid) Type: Contractor (Full-time)
Technical English + Spanish (required)
We are seeking an experienced Backend Developer to support the modernization of legacy systems, with a strong focus on migrating APIs from .
NET Framework 4.0 to .
NET 8.
This role is ideal for engineers with deep expertise in backend development, API transformation, and database optimization within on-premise (data center) environments.
NET Framework 4.0 to .
NET 8
Modernize and optimize backend services while ensuring system stability
Work extensively with SQL Server, including query optimization and stored procedures
Maintain and enhance existing systems hosted in on-premise data centers (no cloud involvement)
Collaborate on code management and version control using GitLab
Ensure code quality, performance, and reliability across all implementations
️ 5–6+ years of backend development experience
~ ...