Communications infrastructure for the AI era, from the people who built the substrate the industry already runs on.
Compose AI agents, human agents, and real-time communications into one system you control in code. One programmable platform for everything that happens on a call. Built by the creators of FreeSWITCH.
OUR HISTORY
20 years of communications innovation. Built for what's next.
SignalWire was founded by the engineers who built FreeSWITCH and helped power the modern communications industry. Today, we're building the programmable communications platform the world runs on.
20+ Years
Building communications infrastructure
~1200ms
Typical conversational turn, end to end
2.7B+ Interactions
Minutes and messages delivered annually
2.7K+ Companies
On the platform, from startups to enterprises
THE CATEGORY
Programmable Unified Communications
The missing layer of cloud communications. Voice, messaging, video, and AI built on one programmable substrate, not stitched together from separate services. This is the category the AI era requires, defined by the team building it.
Backed by
MEET THE EXECUTIVE TEAM
Executive leadership
Anthony Minessale
CEO & Founder
Evan McGee
CTO
Chris Grillone
EVP, Commercial Strategy & Growth
Adam Kalsey
EVP, Product
Christopher Rienzo
VP of Engineering
Jill Minessale
VP of Finance
Mary Lawler
VP of Marketing
Kacy Bassignani
VP of People Operations
Justin Ellis
VP of Sales
MEET SIGNALWIRE'S LEADERS
Broader leadership team
Jason Atkins
Assistant Director of Support
Bryan Rite
Chief Architect
Catelyn Potter
Director, PLG Growth
Steve Starr
Director of Carrier Operations
Rence Holt
Director of Demand Generation & Growth Marketing
Sharon White
Director of Success
Brian West
Director of Support and Head of Developer Experience
Tom Rabstenek
Director, Strategy and Partnership
Obinna Amalu
Head of Infrastructure
Luca Pradovera
Head Solution Architect
Michael Jerris
Senior Program Manager
FAQS
What's the relationship between SignalWire and FreeSWITCH?
SignalWire was founded by the team that created FreeSWITCH: the open-source telephony engine that has been running underneath some of the largest communications platforms in the world since 2006, including Zoom Phone, Amazon Connect, and Vonage. SignalWire employs the original FreeSWITCH authors and continues to maintain the project today. FreeSWITCH is the media engine, the real-time voice substrate the industry built on. SignalWire is what the same team built on top of it: a cloud-native platform with the programmable control plane, state management, and AI orchestration layer that FreeSWITCH alone was never designed to provide.
Who are SignalWire's investors?
SignalWire has raised approximately $45M in total capital from a combination of venture and strategic investors. Our strategic investors include partners who operate at the infrastructure layer of the communications industry, the kind of investors who understand what it means to own the stack, not assemble it. For investor relations inquiries, contact us.
How is SignalWire different from Twilio or other CPaaS?
Traditional CPaaS providers like Twilio treat communications as transactions because they deliver a call, fire a webhook, and leave state management, routing, context, and orchestration for your engineering team to rebuild in application code. That model worked for a decade. AI broke it. SignalWire is built on a fundamentally different architecture: a control plane that stays attached to the live interaction, owns its state, and governs what every participant, human, AI, or system, can do next. The difference isn't a feature. It's the layer that was always missing. SignalWire is also Twilio-compatible at the API level, so existing Twilio code can migrate without rewriting.
Is SignalWire hiring?
View open roles on the career page at signalwire.com/careers.