Description: * Solid experience with C# and .NET Framework or .NET Core; * Strong understanding of OOP (Object-Oriented Programming), SOLID principles, and design patterns; * Experience in developing and consuming RESTful APIs; * Knowledge of Entity Framework (or other ORM), LINQ, and relational data modeling; * Experience with SQL Server or PostgreSQL for writing queries, stored procedures, and data modeling; * Familiarity with build/deployment automation tools (e.g., Azure DevOps, GitHub Actions, Jenkins); * Knowledge of API security (authentication/authorization, JWT, OAuth 2.0); * Git version control (GitFlow) is a plus; * Availability to work on-site in Ijuí/RS. * Design, develop, and maintain RESTful APIs and backend systems using C# and .NET (Core or Framework); * Participate in defining system architecture, development standards, and coding best practices; * Ensure code quality through automated testing (unit and integration tests) and pull request reviews; * Perform integration with relational databases (SQL Server); * Apply version control (Git), CI/CD, and deployment automation concepts; * Collaborate with frontend developers, DevOps engineers, product analysts, and QA specialists; * Investigate technical issues and propose effective solutions, focusing on continuous improvement and performance; * Write technical documentation for services, endpoints, and implemented workflows; * Contribute to the company’s technical environment evolution by proposing new approaches and technologies when necessary. 2512130202201679580