Online Developer H/F (Monterrey)

Senior Dotnet DeveloperKogni Vera Reciente León, Mexico (Hybrid) Type: Contractor (Full-time)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.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.Qualifications5–6+ years of backend development experience.NET Framework (4.0) to .
NET 8Advanced SQL Server expertise (query tuning, relational design, sto...