Hiring: Senior / Lead iOS VoIP Engineer – UCaaS / Softphone ?

Location:
Hyderabad ? Company: Pranathi Software Services ?

Experience:
3–10+ Years ⏱️ Employment: Full-Time Pranathi Software Services is looking for an experienced Senior / Lead iOS VoIP Engineer with strong hands-on experience building and troubleshooting production UCaaS, SIP softphone, or WebRTC calling applications. Must-Have

Skills:
• Swift, UIKit/SwiftUI
• CallKit & PushKit
• APNs VoIP Push Notifications
• SIP, RTP/SRTP & WebRTC
• AVAudioSession
• Background & terminated-state incoming calls
• Bluetooth/AirPods/audio routing
• Wi-Fi ↔ 4G/5G network handover
• SIP/WebRTC debugging & Wireshark Experience with Linphone SDK, PJSIP/PJSUA2,



FreeSWITCH, Kamailio, FusionPBX or Asterisk is highly preferred. We specifically need someone who has personally built or maintained a production iOS softphone/UCaaS application and can troubleshoot issues such as missed incoming calls, one-way audio, call drops, PushKit/CallKit issues, SIP registration and network switching. Significant: This is not a general iOS development role. Strong production VoIP/Softphone experience is mandatory. Interested candidates can apply or share your resume at [email protected]

📌 Senior / Lead iOS VoIP Engineer – UCaaS / Softphone (Hyderabad)
🏢 Pranathi Software Services
📍 Hyderabad