Senior Android Mobile Developer/ SIP / PTT SME /

Must Have • Native Android in Kotlin or Java, with shipped production apps. React Native and Flutter don’t reach the platform layer, and that is where foreground service types, Doze exemption, audio focus and background execution live. • Has built or maintained a SIP client. Comfortable with SIP signalling and RTP/SRTP media, and can open a packet capture and tell you what went wrong. • Knows the…