Sr. Desktop .NET Engineer

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 France.

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.