Sr. Desktop .NET Engineer

Jobgether; France; Remote; EUR 60,000 - 65,000; Full time

Benefits offered by this job

Fully remote work within Europe

Long-term contract (2 years, extend to

2 years initial duration, possible 3rd

Job summary

Jobgether, on behalf of a partner, seeks a Sr. Desktop .NET Engineer based in France for a fully remote, long-term contract. The role targets a senior engineer with strong desktop app development experience on a large-scale IoT project for a German enterprise client.

You will design and build desktop apps in C#/.NET (WPF/WinUI/MAUI), follow MVVM, and integrate with hardware, sensors and robotics. Collaboration across Europe will influence architecture and performance.

Qualifications

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

Responsibilities

• Design, develop, and maintain desktop applications using C# and .NET.
• Build modern UIs using WPF, WinUI, or MAUI following MVVM.
• Develop custom UI controls and 2D/3D visualization components.
• Integrate desktop software with hardware devices, sensors, and robotics.
• Implement high-performance, multithreaded, asynchronous solutions.
• Work with protocols and APIs (TCP/UDP, WebSocket, gRPC, REST).
• collaborate with teams developing native C++ modules and SDK integrations.
• Contribute to system architecture, optimization, scalability, and delivery.

Skills

C#

.NET

WPF/WinUI/MAUI

MVVM

Multithreading

Async/Await

Networking protocols

German B2

Hardware integration

Job description

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.