Telephony Engineer

Job description

**Android Telephony WAN Engineer (4–10 Years)** Work on **Android Telephony (WAN)** across **Framework + RIL** layers for 4G/5G devices. **🔹 Responsibilities** - Develop & customize **AOSP Telephony Framework** - Work on **RIL (RILJ, RILC) and modem integration** - Debug issues: **call drops, data issues, network registration, certification issues** - Handle **LTE/5G data (WAN), roaming, network selection** - Develop **IMS features (VoLTE, VoWiFi, ViLTE, VONR)** - Work with **Qualcomm modem platforms** - Analyze logs: **logcat, radio logs, QXDM, TCP** - Support **carrier certification (PTCRB, GCF, Verizon & ATT)** **🔹 Required Skills** - Strong in **Android Telephony Framework & RIL** - Experience in **AOSP customization & debugging** - Knowledge of **LTE / 5G / IMS** - Programming: **Java, C, C++** - Experience with **modem logs & debugging tools**