I will build a custom voip platform, cloud pbx, and ai voice agent
About this Gig
Looking for a robust and scalable custom VoIP platform? Building real-time communication requires deep knowledge of SIP, RTP, and networking. A single flaw can lead to dropped calls or security breaches.
I am a Senior Systems Architect with over 10 years of experience building mission-critical telecom infrastructure. I bridge the gap between complex VoIP engines and modern Web Apps.
What I Can Build For You:
- Cloud PBX and SaaS Platforms: Multi-tenant systems with user provisioning and billing logic.
- WebRTC and Softphones: Seamless browser-based calling integrated into your web app.
- AI Voice Agents: Conversational AI integrations for automated inbound and outbound calls.
- High Availability Clusters: Kamailio load balancing for thousands of concurrent calls.
- Custom Integrations: Connect your core to CRMs and payment APIs.
Tech Stack:
- VoIP: FreeSWITCH, Asterisk, Kamailio, WebRTC
- Backend: Python Django, FastAPI, Node.js
- Frontend: React.js
Why Me? You own 100 percent of the source code, and I prioritize strict security like firewalls, Fail2ban, and SBC.
Please message me before placing an order to discuss your project!
FAQ
Do I get full ownership of the source code?
Yes. Unlike "Software as a Service" (SaaS) platforms where you rent the software, you will have 100% ownership of the custom code I write for your frontend and backend. You will not be locked into any recurring software licensing fees from me.
Do you provide the phone numbers (SIP Trunks)?
No, I provide the software architecture and platform development. You will need to purchase your own SIP trunks/phone numbers from a telecom provider (such as Twilio, Telnyx, SignalWire, or a local carrier). I will, however, integrate your chosen provid
Can this system handle high call volumes (1,000+ concurrent calls)?
Yes, but it requires the Premium Package architecture. Standard single-server setups are great for small to medium businesses. For high-volume enterprise needs, I use Kamailio as a load balancer in front of a cluster of FreeSWITCH m
How do you protect the VoIP server from hackers and toll fraud?
Security is a top priority. I implement strict firewall rules, Fail2ban to block brute-force attacks, and configure secure SIP profiles. For enterprise setups, I can also implement a Session Border Controller (SBC) to hide your core inf
Can users make calls directly from the web browser?
Yes! I can integrate WebRTC into the React.js dashboard, allowing your users or agents to make and receive calls directly from their web browser without needing to download any external softphone software.
Where will this platform be hosted?
The platform will be deployed on your own cloud hosting account (such as AWS, DigitalOcean, Linode, or Google Cloud) so you retain full control over your data and infrastructure. I will provide guidance on the server specifications you need based on your expected
Can you integrate the system with my existing CRM?
Absolutely. Because I build the backend using modern frameworks like Python (Django/FastAPI) or Node.js, I can easily connect your VoIP platform to external systems like HubSpot, Salesforce, or Zoho via their APIs for features like automatic call lo

