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SignalWire

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A next-generation CPaaS that delivers low-layer advanced communications platform through an elastic-cloud and developer-friendly APIs

Palo Alto, United StatesFounded 2017Telecom
Valuation $100–250M Last recorded · 2021
Revenue $10–50M Latest reported FY
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for SignalWire and the history behind them.

About SignalWire

SignalWire is a technology startup specializing in software-defined telecommunications. The company provides advanced communication solutions through APIs (Application Programming Interfaces), which allow developers to integrate voice, messaging, and video functionalities into their applications. SignalWire serves a diverse range of clients, including businesses that require robust communication systems, emergency service providers, and tech companies looking to enhance their communication capabilities.

Operating in the telecommunications market, SignalWire leverages its deep expertise in software and cloud-based architectures to offer scalable and flexible communication services. The company's business model revolves around providing API access to its communication infrastructure, enabling clients to build custom communication solutions without the need for extensive in-house development. This model allows SignalWire to generate revenue through subscription fees and usage-based pricing, where clients pay based on the volume of messages, calls, or video sessions they utilize.

SignalWire's market includes businesses of all sizes, from startups to large enterprises, across various industries such as customer service, healthcare, and emergency response. The company prides itself on its ability to solve complex telecom problems and offers a range of services that include SMS messaging, voice calls, and video conferencing. By focusing on automation, observability (monitoring systems to ensure they are working correctly), and operational excellence, SignalWire aims to push the boundaries of what is possible in modern communication.

In summary, SignalWire is a cutting-edge player in the telecommunications industry, providing essential communication tools through a flexible, API-driven model. The company stands out for its commitment to innovation and its ability to cater to a wide array of business needs.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2017
Headquarters
Palo Alto, United States
Employees
84
Open positions
34
Dealroom signal
74.5/100
Industry
Telecom
Sector
Telecom, Telecommunications, PaaS, Open Source, 4YFN 2023, 4YFN
Business model
SaaS
Client focus
b2b
Investment activity
1 company, latest May 2018
Capital deployed
—
Preferred round
ACQUISITION

Funding history

5 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES B✓Equity / VC Mar 2022 — — T-Mobile Ventures · T-Mobile ↗
OtherOther financing Dec 2021 $0 — Undisclosed —
Showing the latest 2 of 5 recorded eventsBook a demo for the full funding history →

Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

YearRevenueGrowth
2026
2025
2024
2023
2022
2021
2020 —
Company filings, research estimates and Dealroom dataBook a demo for the full financial model →

Growth signals

SignalWire website traffic

Latest recorded traffic for SignalWire is 110K monthly website visits, down 8.3% over the last three months. SignalWire's team grew 2.4% over the past year.

Latest monthly visits110K 3-month web change-8.3% 1-year team growth+2.4%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

Company identity and context are open; selected comparison metrics preview what is available on the platform.

Showing 8 of the closest matchesCompare every metric →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

14 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A8 investors entered at this stage

Other known investors6 additional known investors

  • DTCP
  • Flucas Ventures
  • Luis Robles
  • Patrick Chang.
  • T Capital
  • Wisconn Valley Ventures
Team profiled 15 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
12 countries with
team presence
🇺🇸 United States69.6%
🇧🇷 Brazil7.3%
🇬🇧 United Kingdom4.3%
🇮🇳 India2.9%
🇪🇸 Spain2.9%
Top 5 of 12 shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about SignalWire on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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