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Callsign

Cybersecurity · London, United Kingdom · Founded 2011

Callsign is a startup that operates in the financial technology sector, providing a platform that enhances customer transaction experiences. The company's primary focus is to streamline and secure transactions, making them as convenient as possible for customers. This is achieved through the use of intelligently orchestrated journeys that are simple to use and deploy. The company's clients are primarily businesses that are looking to improve their customer experience, particularly in the area of transactions. Callsign's platform allows these businesses to control and customize the customer journey, with the ability to test, improve, and release as needed. This flexibility makes the solution nimble and light, often going unnoticed by the end customer, which is a testament to its seamless integration. Callsign's business model is built around the use of powerful, ethical artificial intelligence (AI). AI is a technology that enables machines to mimic human intelligence. In Callsign's case, it is used to enhance the customer transaction experience. The company generates revenue by providing its AI-powered platform to businesses. The market that Callsign operates in is vast and growing, as more and more businesses recognize the importance of a smooth and secure transaction experience for their customers. The company's focus on ethical AI also positions it well in a market increasingly concerned with the ethical implications of AI use. Keywords: Financial Technology, Customer Transactions, Streamlined Experience, Secure Transactions, Artificial Intelligence, Ethical AI, Customer Experience, Business Model, Revenue Generation, Market Growth.

Valuation $100–500M
Revenue $10–50M
Headcount 100–500
Total funding $100–500M
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Callsign and the history behind them.

Investors

8 investors on Callsign's cap table

Sourced from Dealroom's funding history. Investor profile links are shown where available.

Seed 2 investors entered at this stage
Terry Eger
Breed Reply
Series A 5 investors entered at this stage
Qualcomm Ventures
PTB Ventures
Accel
AllegisCyber Capital
NightDragon
Series B+ 1 investor entered at this stage
Abu Dhabi Investment Office

Global footprint

Where Callsign has talent and traffic

Workforce by country
10 countries with
team presence
🇦🇪 United Arab Emirates60.1%
🇬🇧 United Kingdom28.7%
🇺🇸 United States4.3%
🇵🇰 Pakistan2.1%
🇮🇳 India1.6%
Top 5 of 10 shown
Web traffic by country
11K monthly visits
across markets
🇺🇸 United States30.9%
🇬🇧 United Kingdom30%
🇮🇳 India26.4%
🇮🇩 Indonesia6.4%
🇵🇰 Pakistan3.6%
Top 5 markets shown

Talent graph

The shape of Callsign's talent

Dealroom maps Callsign's team person by person — pinpointing the standout operators and scoring them across the six dimensions investors underwrite. The counts and shape below are a public preview; the named individuals and exact scores live in the platform.

11 standout operatorsDealroom-flagged across the org
7 AI specialistsincl. 3 core researchers
280 employees mappedperson by person
DimensionScore
AI Talentlive Score hidden — book a demo
Engineering Score hidden — book a demo
Product Score hidden — book a demo
Go-to-market Score hidden — book a demo
Leadership Score hidden — book a demo
Research Score hidden — book a demo
Book a demo to unlock Callsign's exact scores

Source: Dealroom Talent Intelligence. Public profiles show counts and the team's shape only — request a demo for the named individuals, per-person seniority and tenure, and team benchmarks vs peers.

Market sentiment

What the market is saying about Callsign

An AI-synthesized read of the highest-engagement posts about Callsign on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

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

See Callsign on the full Dealroom platform

Live deal flow, founder pedigree, hiring signals, revenue trajectory, and the full cap table.