This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Sr. Desktop .NET Engineer based in Spain. This fully remote, full-time contract opportunity is suited to a senior engineer with strong desktop application development expertise. You will contribute to a large-scale greenfield IoT project for a German enterprise client. The role involves building modern desktop applications that connect with hardware, sensors, and robotics systems. You will work across software architecture, UI development, real-time data processing, and performance optimization. As part of a distributed international team, you’ll help develop integrated systems from the ground up. The position offers a long-term engagement with opportunities to influence technical direction and architectural decisions. This is a Europe-based remote role with a focus on challenging engineering problems at the intersection of software and hardware. Accountabilities

Design, develop, and maintain desktop applications using C# and .NET. Build modern user interfaces using WPF, WinUI, or MAUI, following MVVM architecture principles. Develop custom UI controls and 2D/3D data visualization components. Integrate desktop software with hardware devices, sensors, and robotics systems. Implement high-performance, multithreaded, and asynchronous solutions. Work with communication protocols and APIs, including TCP/UDP, WebSocket, gRPC, and REST.



Collaborate with teams developing native C++ modules and SDK integrations. Contribute to system architecture, optimization, scalability, and technical delivery. Requirements

Strong professional experience with C# and .NET/.NET Core. Solid experience developing desktop applications using WPF, WinUI, or MAUI. Good understanding of the MVVM architecture pattern. Experience with multithreading, async/await, and performance optimization. Familiarity with network protocols and API integration. B2-level German proficiency , required for communication with the client. Experience with hardware integrations, sensor data, or similar systems is a plus. Exposure to C++ or native modules such as DLLs is advantageous. Ability to collaborate effectively within a distributed, international engineering team. Benefits

Monthly contract rate of $6,000–$6,500 USD , depending on experience. Full-time B2B contract. Initial contract duration of 2 years, with a likely extension to 3 years. Fully remote work within Europe. Long-term project engagement and expected stability. Opportunity to build a greenfield IoT platform from concept through delivery. Exposure to advanced hardware, robotics, real-time data processing, and performance-critical systems. Opportunity to influence system architecture and technical direction. International collaboration with a German enterprise client.

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📌 Sr. Desktop .NET Engineer (Valladolid)
🏢 Jobgether
📍 Valladolid