
SignalWire offers a Programmable Unified Communications (PUC) platform with powerful APIs for voice, video, messaging, and AI. This platform enables businesses to build and scale next-generation contact centers, PBXs, and cloud-based communications, leveraging seamless connectivity via SIP, PSTN, and WebRTC. They emphasize ultra-low latency, a global network, and a fully owned telecom infrastructure, allowing for rapid deployment and scalability without third-party dependencies. SignalWire's developer-first APIs provide complete control for customization and growth, integrating AI-driven automation and analytics on a single, unified platform. The company also ensures enterprise-grade security and compliance, including GDPR, HIPAA, and SOC 2 Type II.

SignalWire offers a Programmable Unified Communications (PUC) platform with powerful APIs for voice, video, messaging, and AI. This platform enables businesses to build and scale next-generation contact centers, PBXs, and cloud-based communications, leveraging seamless connectivity via SIP, PSTN, and WebRTC. They emphasize ultra-low latency, a global network, and a fully owned telecom infrastructure, allowing for rapid deployment and scalability without third-party dependencies. SignalWire's developer-first APIs provide complete control for customization and growth, integrating AI-driven automation and analytics on a single, unified platform. The company also ensures enterprise-grade security and compliance, including GDPR, HIPAA, and SOC 2 Type II.
Product: Programmable Unified Communications (voice, video, messaging, AI) with developer-first APIs and SDKs
Founding team: Founded by creators/primary maintainers of FreeSWITCH (Anthony Minessale, Evan McGee, Sean Heiney)
Headquarters: Palo Alto, California
Funding: Multiple venture rounds; latest disclosed Series B (Mar 23, 2022); reported total funding $41.6M
Tech focus: Low-latency telecom infrastructure (SIP/PSTN/WebRTC), global network, embedded AI agents
Real-time communications and programmable telecom infrastructure for businesses building contact centers, PBX, and voice/video-enabled applications.
Communications / Telecom / CPaaS
30000000.00 USD
Series B announced June 2, 2021; participants included Storm Ventures, Samsung NEXT, AME Cloud Ventures (Jerry Yang), and Dean Drako
Deutsche Telekom's Telekom Innovation Pool participated in the Series B
T-Mobile Ventures named as a lead investor in a March 23, 2022 closing
“Participation from strategic telecom investors (Telekom Innovation Pool/Deutsche Telekom, T-Mobile Ventures) alongside venture investors such as Prosperity7 Ventures”
SignalWire is looking for an European-based WebRTC Software Engineer to help support our European expansion. SignalWire offers engineers the opportunity to build new services and systems critical to the success of a dynamic, fast-growing company-- to push forward the boundaries of communication and grow their career as SignalWire grows.
Please note: This role is only available to candidates who live in Europe and do not require sponsorship. Job Duties:
Qualifications: