C#/.Net Developer

Responsibilities • Develop and maintain C#/.NET components for real-time voice, video, and data • Implement new features within existing communication services • Work with SIP signalling, session handling, and network communication • Build secure, low-latency, highly reliable services • Collaborate with distributed Agile teams • 60–70% hands-on development Requirements • 3+ years of experience with C# / .NET (Framework and Core) • Strong experience in asynchronous and network programming • Hands-on experience with ASP.NET, WebAPI, SignalR, and WCF • Experience with Telecom / radio interfaces (3GPP) • Solid understanding of SIP protocols; exposure to RTP / RTCP • Experience with real-time voice/video systems • Experience working with XML (XSD) and structured data formats • Good engineering fundamentals: OOP, SOLID, CI/CD, Git, Agile • Basic SQL database knowledge Nice to have • Experience with Atos or Mitel solutions • ASP.NET web application experience