Telephony Engineer

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