I will develop softphone app, linphone app, esim app, esim website, voip app

Need a carrier-grade communication solution? Whether you are launching a global eSIM marketplace, building a custom Linphone softphone, or struggling with SIP NAT audio bugs, you need a developer who understands the landscape.

What I Do

I provide end-to-end development and expert troubleshooting for:

• Softphone & Linphone Apps: Custom UI/UX, push notifications (FCM/APNs), and SIP account integration for iOS, Android, and Desktop.
• eSIM Ecosystems: Full SM-DP+ integration, eSIM websites with automated payment, and mobile apps for remote SIM provisioning.
• AI-VoIP Integration: Real-time AI transcription, sentiment analysis, and smart IVR agents.
• WebRTC Platforms: Browser-based calling and CRM-embedded communication tools.
• VoIP Bug Fixing: Instant resolution for One-Way Audio, NAT Traversal, SIP ALG issues, and Jitter/Latency optimization.

Technical Excellence

• Protocols: SIP, WebRTC, RTP/RTCP, SRTP, TLS.
• eSIM Standards: GSMA-compliant SGP.22/SGP.32, Remote SIM Provisioning.
• Infrastructure: FreeSWITCH, Asterisk, Kamailio, OpenSIPS.
• Development: Flutter, React Native, C++, Python (for backends).

I build scalable, secure 5G-ready systems. Lets build yours today.