C#/.Net Developer

Responsibilities • Design, develop, and maintain C#/.NET components for real-time voice, video, and data communication systems • Implement new features within existing mission-critical communication services • Work hands-on with SIP signalling, session management, and network communication layers • Build secure, low-latency, highly reliable services for real-time environments • Contribute to systems handling real-time voice and video streams • Collaborate with distributed Agile teams across the UK and Europe • 60–70% hands-on development within a long-term product environment Requirements • 3+ years of experience with C# / .NET (Framework & .NET Core) • Strong skills in asynchronous and network programming • Hands-on experience with ASP.NET, WebAPI, SignalR, or WCF • Experience with SIP signalling and session handling • Exposure to real-time voice or video systems (RTP/RTCP is a plus) • Background in telecom or real-time communication environments • Experience working with XML (XSD) and structured data • Solid engineering fundamentals (OOP, SOLID, Git, CI/CD, Agile) • Basic SQL knowledge