Senior Software Engineer - C#/.Net and C++

We are looking for a Senior Software Engineer with strong C#/.NET backend services who is also open to working with C++ / Linux. You will join a mission-critical communication technology environment, working on a core system that supports telephony, VoIP and secure digital services across regulated European markets. This role is ideal for someone who enjoys complex existing systems, backend development, long-term technical ownership, and is comfortable working across both C#/.NET and C++ domains. Your main stack would be C#/.NET, 20% of the time C++. Therefore, we are primarily looking for a strong .NET engineer who also has solid C++ knowledge or is comfortable contributing to C++ when needed. Responsibilities Work on the evolution and stabilization of a C++ / Linux-based Core Communication System Gradually learn the architecture of a complex, mission-critical communication platform Contribute to modules related to telephony, VoIP, device integrations and communication services Suppor...