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.

Important: This is not a general iOS development role. Robust 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