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