Senior React Native Developer — VoIP / WebRTC SDK Integration (Urgent Project)

@ixorawebmob

Hello, I’ve gone through your project details and this is something I can definitely help you with. With over 10 years of experience in mobile app development, I specialize in React Native and have substantial expertise in VoIP and WebRTC technologies. I have successfully integrated VoIP SDKs in previous projects, focusing on stability, performance tuning, and a seamless user experience. I approach each project by first reviewing the requirements and then suggesting the best technical strategies to achieve your goals while maintaining ongoing communication throughout the development process. Here is my portfolio for your reference: https://www.freelancer.in/u/ixorawebmob. I’m very interested in your project and would love to understand more details to ensure the best approach. Could you clarify: 1. Have you built any VoIP or calling app? Share links. Have you created a React Native SDK/module before? Let’s discuss over chat! Regards, Arpit Jaiswal

@moha262

Hello, ! After reviewing your project, I believe my Telecom, Telecoms Engineering, SIP, Software Development, VoIP, Telecommunications Engineering and React Native skills are a great fit for your company. I possess the expertise required for your project and would like to bid for your project. With 8 years of practical experience, I am confident that I can successfully complete your project. Please feel free to contact me with any questions. Thank you, Moh.

@ahtishamulhaque1

Hii, I’ve thoroughly reviewed your project and I’m confident I can deliver it smoothly and professionally using React Native, Telecoms Engineering, Telecommunications Engineering, Software Development, VoIP, Telecom and SIP. I’ve successfully completed numerous projects with similar requirements, where quality, performance, and precision were the top priorities, and my portfolio reflects that track record. For Senior React Native Developer — VoIP / WebRTC SDK Integration (Urgent Project), I’d love to know: is there a particular outcome or milestone you’d like to prioritize first, or shall I follow a structured approach from start to final delivery? Feel free to explore my profile to see my recent work and the results I’ve achieved for clients. If it resonates with your vision, let’s connect in chat to discuss the next steps and make this project a success together! Looking forward to collaborating, Ahtisham Malik

@SkillCrafts

I specialize in high-reliability React Native communications apps, having successfully integrated libraries like Twilio Voice, PJSIP, and custom SIP SDKs for real-time VoIP functionality. My focus is on robust native module bridging, essential for the urgent WebRTC integration you require, ensuring flawless background state management and headset routing crucial for a seamless calling experience. I understand that failure in these complex native modules leads to significant user drop-off, which my experience is geared to prevent. My technical approach starts with evaluating the specific VoIP SDK's native bridging requirements (Android/iOS) to ensure minimal thread blocking on the JS bridge. I will implement a reliable wrapper like `react-native-webrtc` or a suitable alternative, managing all necessary background execution modes and permissions (Microphone, Bluetooth). State management will utilize Redux Saga or Context to handle global call states (ringing, connected, suspended), combined with a dedicated focus on reliability of push notification signaling (APNS/FCM) for inbound calls while the app is killed or backgrounded. Is the specific preferred SDK (e.g., OpenVidu, Vonage, or a custom SIP stack) already defined, and what is the existing architecture for managing NAT traversal? I am ready to begin mapping the integration immediately. Please initiate a quick chat so we can align on the exact native module dependencies and define the core call flow.

@ssquare489

With over 3 years of experience in building high-performance React Native applications, specifically in the realm of VoIP/ WebRTC/SIP integration, I would bring immense value and speed to your project. Not only have I successfully created a React Native VoIP SDK/module before, but I've also incorporated calling functionalities using SIP libraries like SIP.js. In-depth knowledge of Push notifications for call flows and Background service handling on both iOS and Android platforms further fortify my suitability for this task. Moreover, I understand that SDK development is far different from normal app development. It requires precision, reliability, and comprehensive documentation support - key attributes I prioritized during my tenure at Google and Apple. My methodical process involves an amenable code review, transparent improvement plans with clear milestones and continuous gaps to ensure top-notch quality even under time constraints, which perfectly aligns with your 'Urgent Project' status. When you choose me, you're not just hiring a developer, but a responsible partner invested in the success of your project. From start to finish, I guarantee meticulous attention to every detail in integrating the SDK layer, mobile VoIP calling functionalities all while considering stability and performance matters. Together, we can build an exceptional product that maximizes user experience while giving you an edge in your market niche. Let's get started!

@bridgestonetech1

Hello, we’re a mobile engineering team with 7+ years of experience, including deep hands-on work with React Native, VoIP, WebRTC, and SDK-level integrations. We’ve built calling features using SIP-based flows, push-driven incoming calls, background handling, and native bridges for iOS and Android, so we understand this is not a standard app task. Our approach is to treat this as a production-ready SDK: clean React Native layer, stable native modules where needed, reliable call UI, and performance tuning for real-world usage. We’ll work closely with your SIP and OpenSIPS setup to ensure smooth inbound and outbound calling, proper push call flows, and solid background behavior. We can start immediately. Let’s connect and review the architecture and timelines.