SignalWire

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…

www.signalwire.com

SignalWire

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…

www.signalwire.com

HQRemote

Team Size81

Open JobsUnknown

Total Funding$42M

Latest Fundraise4 years ago

TL;DR

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

Company Overview

Problem Domain

Real-time communications and programmable telecom infrastructure for businesses building contact centers, PBX, and voice/video-enabled applications.

Industry

Communications / Telecom / CPaaS

Tech Stack

APIs

SDKs

WebRTC

SIP

PSTN

AI agents

Funding Track Record

Series B- 2021-06-02

30000000.00 USD

Series B announced June 2, 2021; participants included Storm Ventures, Samsung NEXT, AME Cloud Ventures (Jerry Yang), and Dean Drako

Series B (subsequent close)- 2021-12-16

Deutsche Telekom's Telekom Innovation Pool participated in the Series B

Series B (subsequent close)- 2022-03-23

T-Mobile Ventures named as a lead investor in a March 23, 2022 closing

Investor Signal

“Participation from strategic telecom investors (Telekom Innovation Pool/Deutsche Telekom, T-Mobile Ventures) alongside venture investors such as Prosperity7 Ventures”

Founders

What we do

Join the Team

Software Engineer - WebRTC & VoIP

On-SiteES

On-Site • ES

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:

Add new features to SignalWire’s CXML, RELAY, SWML, and Call Fabric products
Review peers’ designs and pull requests
Provide Tier 3 support for VoIP and WebRTC problems, joining customer calls when needed
Create unit and integration tests for CI/CD
Work with QA to ensure new features are testable

Qualifications:

Must be eligible to work within Europe without sponsorship.
Hands-on experience with C programming language
Experience extending C language VoIP/WebRTC applications like FreeSWITCH, Asterisk, Janus, Kamailio, OpenSIPS, rtpengine, or coturn
Familiarity with Docker and Git
Knowledge of WebRTC, SIP, SDP, RTP, SRTP, DTLS-SRTP, ICE, TURN, STUN, RFC2833/RFC4733, G.711
Hands-on experience with Typescript/JavaScript a bonus
Browser WebRTC API experience a bonus

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