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 8Modernize and optimize backend services while ensuring system stabilityWork extensively with SQL Server, including query optimization and stored proceduresMaintain and enhance existing systems hosted in on-premise data centers (no cloud involvement)Collaborate on code management and version control using GitLabEnsure code quality, performance, and reliability across all implementations️ 5–6+ years of backend development experience~ NET Framework (4.0) to .
NET 8~ Advanced SQL Server ...