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