VoIP & Telecom Staff Augmentation - Hire Dedicated Asterisk, FreeSWITCH & SIP Engineers
Staff augmentation for VoIP and telecom projects. Dedicated Asterisk, FreeSWITCH, OpenSIPS, Kamailio, SIP, and WebRTC engineers with 5–15 years of experience. Starting from $25/hr with 48-hour onboarding and NDA Day 1.
What is VoIP staff augmentation?
VoIP staff augmentation provides access to specialized Asterisk, FreeSWITCH, SIP, and telecom infrastructure engineers on a contract basis. Unlike traditional hiring, augmentation focuses on immediate project needs with expert teams that scale with your requirements.
Why use staff augmentation for telecom projects?
Telecom projects require deep protocol expertise (SIP, RTP, SRTP), carrier-grade reliability, and understanding of PSTN interconnect. Staff augmentation lets you access top 5% experts without months of hiring and without long-term overhead.
VoIP & Telecom Developer Staff Augmentation
Expert Asterisk, FreeSWITCH, SIP, and WebRTC engineers for your telecom platform. From $25/hr. 48-hour onboarding. NDA Day 1.
VoIP & Telecom Skills Matrix
| Technology | Versions | Use Cases | Seniority Available |
|---|---|---|---|
| Asterisk | 18–21 LTS | IVR, PBX, AGI, AI IVR, call routing | Mid / Senior / Architect |
| FreeSWITCH | 1.10.x | Softswitch, ESL, WebRTC, mod_verto, clustering | Senior / Architect |
| OpenSIPS | 3.x | SIP proxy, load balancing, carrier routing | Senior |
| Kamailio | 5.x | SBC, TLS/SRTP, fraud prevention, topology hiding | Senior |
| WebRTC | W3C current | Browser calling, SFU, TURN/STUN | Mid / Senior |
| SIP/VoIP | RFC 3261 | Signalling, SDP, RTP, SRTP, call handling | All levels |
Available Roles
Senior Asterisk Developer
$28–38/hrAsterisk 18–21, AGI, AMI, IVR, ARI, AI integration
Expert in Asterisk dialplan, protocol handling, and large-scale PBX deployments
FreeSWITCH Architect
$44–50/hrFreeSWITCH 1.10.x, ESL, WebRTC mod_verto, clustering
Specialized in softswitch design and complex media routing
OpenSIPS Engineer
$32–42/hrOpenSIPS 3.x, SIP routing, load balancing, CLUSTER mode
Expert in SIP proxy architecture and carrier-grade scaling
Kamailio SBC Engineer
$43–49/hrKamailio 5.x, TLS/SRTP, fraud prevention, topology hiding
Specialized in Session Border Controller and secure SIP gateways
WebRTC / Voice Developer
$30–40/hrWebRTC signalling, mod_verto, SIP.js, browser integration
Bridge browser calls to PSTN via WebRTC gateways
SIP Infrastructure Engineer
$32–42/hrSIP trunk integration, SRTP, firewall NAT, carrier interconnects
Expert in production SIP infrastructure and troubleshooting
Common Use Cases
MVNO Platform Build
Build carrier-grade MVNO or virtual telecom platform with Asterisk, FreeSWITCH, and SIP infrastructure
WebRTC Gateway
Connect browser-based calling to PSTN via OpenSIPS or Kamailio SBC gateways
AI IVR System
Deploy AI-powered interactive voice systems with voice recognition and intelligent routing
SIP Trunk Infrastructure
Design and manage enterprise SIP trunk networks with redundancy and failover
Frequently Asked Questions
What are the benefits of VoIP staff augmentation?
You get immediate access to specialized engineers without 6-month hiring cycles. Scale teams for specific projects, maintain cost control (50-70% savings vs consultants), and keep full ownership of IP and direction.
What's a typical engagement duration?
Most start 3–6 months. Many scale to 12–24 months as requirements grow. No lock-in contracts — bill weekly. Flexibility to pause or scale based on project needs.
Do your engineers work in my timezone?
We have teams across US, Europe, and Asia Pacific. Typical overlap is 4–8 working hours daily with async-first communication. Time zone diversity often becomes an advantage for 24/7 platform reliability.
How do you verify VoIP and telecom skills?
4-stage vetting: resume screening, protocol deep-dive interviews, live Asterisk/FreeSWITCH coding tests, and architecture review. Top 5% of applicants pass. We focus on protocol understanding and production experience.
Who owns the IP created during the engagement?
Your company owns 100% of all work product. IP assignment and NDA signed Day 1. All code, configurations, and documentation are yours — no escrow or reclaim periods.