Find the Best SIP Jobs
Check out a sample of the 105 SIP jobs posted on Upwork
Need outbound sips with external sip transfer, at least 20 concuurency
Fixed-price ‐ Posted 11 days agoFixed-price
Experience level
need an outbound sip which has external sip transfer enabled, and 20 channels plus. willing to pay the premium price if sompne can prov…
Senior Full Stack Engineer with VoIP/Telephony Experience
Hourly ‐ Renewed 10 days agoHours needed
Duration
Experience level
We are building a private enterprise communications platform that combines telephony, browser-based softphone functionality, multi-tena…
AI-Powered Voice Agent Platform
Fixed-price ‐ Posted 9 days agoFixed-price
Experience level
We are seeking an experienced AI Engineer to design and develop a real-time voice agent platform that can automate customer support int…
Systems Administrator & Google Workspace Migration Specialist
Hourly ‐ Posted 9 days agoHours needed
Duration
Experience level
Senior Systems Administrator & Google Workspace Migration Specialist (US Hours) Overview We are seeking an experienced Systems Admini…
Senior Network & Infrastructure for Multi-Site VPN, VoIP (Grandstream), and NAS Synchronization
Fixed-price ‐ Posted 8 days agoFixed-price
Experience level
We are looking for an expert Network & Infrastructure Engineer to establish a secure, stable, and seamless Site-to-Site VPN connection…
Senior VoIP Engineer / Telecom Platform Architect (FreeSWITCH, A2P 10DLC, SMS & Voice Platform)
Fixed-price ‐ Posted 10 days agoFixed-price
Experience level
Do you have experience building a profitable communications platform on top of FreeSWITCH using providers such as Twilio, Telnyx, Signa…
AI Voice Agent System for Customer Support
Fixed-price ‐ Posted 9 days agoFixed-price
Experience level
We are hiring an experienced AI engineer to build a real-time voice agent platform for automating inbound customer support and call cen…
Telenyx webphone
Fixed-price ‐ Posted 9 days agoFixed-price
Experience level
The job in one sentence: Our agents take inbound sales calls in the browser via a Telnyx WebRTC softphone, and calls are dropping/faili…
International Cloud VoIP Expert: Set up Dutch 06 & Global Lines for Remote Calling & SMS
Hourly ‐ Posted 9 days agoHours needed
Duration
Experience level
Project Overview: I am a mystery caller relocating to Paraguay. I need a 100% digital cloud-based VoIP system to make outbound calls…
VoIP Setup for Australian Mobile
Hourly ‐ Posted 8 days agoHours needed
Duration
Experience level
I am seeking a skilled freelancer to set up a VoIP system for calling and texting from an Australian mobile. The system should be capab…
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