Callsign

Verified

Delivering digital trust through simple secure customer interactions Enterprise Software Cybersecurity Artificial Intelligence

Company News Callsign Team Profile Enterprise Software Startups Series A Route United Kingdom News

About Callsign

Callsign is tracked on 100Xfounder as a enterprise software company, founded in 2011, based in London, England, United Kingdom, currently mapped to the Series A stage. Delivering digital trust through simple secure customer interactions Enterprise Software Cybersecurity Artificial Intelligence

Profile snapshot: Founders linked: Callsign Team. Funding tracked: $39.00M. Hiring focus: Open Roles. Tech tags: AWS, React, Python, and PostgreSQL.

Recent signals:

Callsign appears in the 100Xfounder startup directory import feed.

Why it Matters

Callsign is worth tracking because its funding history is already mapped here, including a $39.00M round, the hiring signal points to active work across Open Roles roles, recent coverage is already tied back to this page, and Callsign Team's founder profile is linked directly from the company page. Use this page as the starting point before moving into the company news hub, founder profiles, and related market pages.

Funding Snapshot

Total Funding: $39.00MLast Round: Series A Accel, $39M Series A in 2020All Rounds: 1

Series A | Accel, $39M Series A in 2020

Hiring Roles

This company is actively hiring.

Open Roles

Meet the Founders

Callsign Team

Founder & CEO

Founder Profile LinkedIn

Tech Stack

AWSReactPythonPostgreSQL

Last updated: May 18, 2026

Callsign research snapshot

This page is assembled from the published company profile, linked founder directory records, and tagged newsroom context already stored on 100Xfounder. It is most useful as a quick starting point before moving into the deeper company, founder, and hub routes below.

Company summary
Delivering digital trust through simple secure customer interactions Enterprise Software Cybersecurity Artificial Intelligence
Founders covered
Callsign Team
Market position
Enterprise Software | Series A | London, England, United Kingdom
Newsroom signal
No direct company-tagged stories are mapped yet; use the connected hubs below for broader market context.
Funding signal
$39.00M

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Company News Hub Callsign Team United Kingdom News Enterprise Software Startups Series A Funding News

Active topics

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Discover Now

Newsroom and topic pages connected to Callsign.

Company News Hub Topic Hubs Funding News

No company-specific newsroom stories available yet.

Contextual Research Links

Jump to country, industry, stage, startup taxonomy, and newsroom routes tied to this company.

Company profile→Founder profile→United Kingdom startup directory→Enterprise Software hub→Enterprise Software startup list→Series A startup list→Series A newsroom→Enterprise Software startups in United Kingdom→Founder directory→Startup directory→

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FAQs About Callsign

Common questions people ask about this profile.

What is Callsign?

Delivering digital trust through simple secure customer interactions Enterprise Software Cybersecurity Artificial Intelligence

Who founded Callsign?

Callsign is associated with Callsign Team on 100Xfounder.

Where is Callsign located?

Callsign is listed in London, England, United Kingdom.

What stage is Callsign in?

Callsign is currently mapped to Series A. Funding context: Accel, $39M Series A in 2020

What is the latest funding round of Callsign?

Callsign's latest tracked round is Series A Accel, $39M Series A in 2020. Total tracked rounds: 1.

Is Callsign hiring now?

Callsign hiring status: Open Roles.

What technologies does Callsign use?

Callsign is associated with AWS, React, Python, and PostgreSQL.

Is Callsign verified on 100Xfounder?

Yes. Callsign is currently marked verified on 100Xfounder as of May 18, 2026.

How can users connect with Callsign founders?

Users can move from the company page to any linked founder profiles, review the company news hub, and use listed company links when public contact routes are available.