




Job Summary: We are seeking a Senior C#/.NET Developer to design, develop, and maintain backend applications and RESTful APIs, with a focus on code quality and business outcomes. Key Highlights: 1. Design and development of REST APIs and Web Services with ASP.NET Core. 2. Implementation of clean architectures, DDD, SOLID, and design patterns. 3. Collaboration with front-end, QA, and DevOps teams. We seek a **Senior Developer** with extensive experience in designing, developing, and maintaining backend applications based on **C\# and .NET**, specializing in building robust, scalable, and secure **RESTful APIs**. A professional focused on code quality, best practices, and clean architecture, with a strong emphasis on business outcomes. **Experience and Specializations** * Over 3 years of enterprise software development experience. * Design and development of REST APIs and Web Services with ASP.NET Core. * Implementation of clean architectures, DDD, SOLID, and design patterns. * Integration with external systems and microservices. * Performance, scalability, and security optimization. **Key Technologies** * **Language:** C\# * **Frameworks:** .NET, .NET Core, ASP.NET Core * **APIs:** REST, OpenAPI/Swagger, JWT, OAuth2 * **Architecture:** Microservices, Clean Architecture, Hexagonal * **ORM:** Entity Framework / EF Core, Dapper * **Databases:** SQL Server, PostgreSQL, MySQL, MongoDB * **Testing:** NUnit, Moq * **DevOps:** Azure DevOps / GitHub Actions, CI/CD * **Cloud:** Azure (App Services, Functions, Storage, Service Bus) **Typical Responsibilities** * Technical analysis and design of backend solutions. * Development of secure, high-performance APIs. * Code reviews and mentoring of junior and semi\-senior developers. * Collaboration with front\-end, QA, and DevOps teams. * Implementation of unit and integration tests. * Technical documentation and production support. * Working in agile teams (Scrum / Kanban). Monday to Friday, on-site, 8 AM to 6 PM Indefinite-term contract Work location: KM2 Medellín Highway, 10 minutes from Puente de Guadua Job type: Full-time, Indefinite Work location: On-site employment


