C# Developer

Safety and security are at the heart of everything we do at Motorola Solutions. We build and connect technologies to help protect people, property and places. Our solutions foster the collaboration that’s critical for safer communities, safer schools, safer hospitals, safer businesses, and ultimately, safer nations.

• At least 2 years of professional experience focused on asynchronous network programming with C#, .NET Framework and .NET Core
• Experience with WCF, SignalR, Entity Framework, ASP.NET and WebAPI
• Understanding of the SIP protocol stack, including INVITE, PUBLISH and SUBSCRIBE, and experience with RTP/RTCP stacks
• Proficiency in parsing XSD XML schemas and handling multipart/mixed MIME bodies
• Strong knowledge of OOP and SOLID principles, plus modern CI/CD workflows with Git, pull requests and Agile

Nice to have:

• Familiarity with TS 24.379, MCPTT or related MCX standards
• Experience with SRTP, TLS or KMS key-management lifecycles

• Develop C# components for high-concurrency SIP sessions, including complex headers and MIME bodies supporting First-to-Answer and Group Regroups
• Implement RTP/RTCP media handling for MCPTT and MCVideo with half-duplex floor control
• Build MCData handlers for SDS and File Distribution using HTTP and SIP MESSAGE, and retrieve XCAP XML configurations
• Integrate OIDC authentication and MIKEY-SAKKE encryption for secure, resilient media transport