**Company Description** Inetum is a European leader in digital services. The Inetum team of 28,000 consultants and specialists works daily to deliver digital impact for businesses, public-sector entities, and society at large. Inetum’s solutions aim to enhance customer performance and innovation, as well as contribute to the common good. Present in 19 countries with an extensive network of delivery centers, Inetum partners with leading software vendors to address the challenges of digital transformation through proximity and flexibility. **Job Description** * Develop web applications, desktop applications, or backend services using .NET technologies (C#, ASP.NET, .NET Framework 4.8, etc.). * Participate in requirements analysis and technical design of solutions. * Maintain and improve existing systems. * Perform unit and integration testing. * Document code and development processes. * Collaborate with other developers, QA engineers, and technical leads. 3-month assignment with possibility of extension **Requirements** * Bachelor’s degree or Engineering degree in Systems, Computer Science, Software Engineering, or related field. * If the required academic qualification is not held, a minimum of 3–4 years’ experience in .NET development (.NET Framework 4.5+) is required. **Essential Technical Skills** Languages and Platforms * C# * .NET Framework 4.8 * .NET 9 * WPF and MVC * Blazor Application Types * Desktop applications (WPF with ClickOnce deployment) * Web applications (MVC, Blazor) * SOAP and REST web services * Windows services Databases * SQL Server (queries, stored procedures, maintenance) * PostgreSQL (especially in Docker environments) * Dapper and Entity Framework as ORMs Connectivity and External Services * Connection to **SFTP** servers (automation of file uploads/downloads) * Consumption of external **REST services** (Java-based) * JSON serialization/deserialization (Newtonsoft.Json, System.Text.Json) Authentication * Windows applications: **custom authentication** * Web application (Viewer): **federated authentication (SSO)** via **JWT tokens** Infrastructure and Deployment * **SOAP services** deployed on **IIS (Windows)** * **REST services** deployed on **Linux**, using **Kestrel** or similar * ClickOnce (Windows client) * Docker (service containerization) * Git (version control) * Hybrid environments: Windows and Linux **Desirable or Valuable Skills** * Experience maintaining legacy code * Ability to debug legacy SOAP services * Basic system administration knowledge (Linux, Docker, IIS) * Familiarity with best practices in documentation, testing, and version control **Soft Skills** * Proactive * Teamwork * Strong written and verbal communication skills