Callsign: Detailed Company Information & Corporate Profile
Summary
Callsign is a private company that has been in the industry for 15 years. The business currently specializes in Computer & Network Security, Business Support Services areas. Callsign's headquarter is located at London, England, GB. The number of employees is at least 100. Register with SignalHire to connect with Callsign employees and management.
| Callsign Website | callsign.com |
| Social Links |   |
| Industries | |
| Callsign Headquarters address | London, England, GB |
| Company Size | 100-200 employees |
| Specialties | Multi-factor Authentication (MFA), Cyber Security, Realtime Identification, Two-factor Authentication (2FA / TFA), Fraud and Security Prevention Plan, PSD2, Identity & Access Management (IAM), Identity Management (IdM), Account Takeover Prevention, Strong Customer Authentication, Biometric Authentication |
| SIC Code | 7372 |
| Founded | 2011 |
| Estimated Annual Revenue | $100M - 500M |
| Operating Status | Independent Company |
| Updated: | 2026-07-19 |
Competitors
Workforce Turnover
Number of employees switched from or switched to
Departmental sample breakdown
Length of Employment
Callsign's workforce includes employees across a wide range of tenure levels.
3% have been with the company for less than 1 year9% have been with the company for 1 to 2 years16% have been with the company for 3 to 4 years28% have been with the company for 5 to 7 years19% have been with the company for 8 to 10 years25% have been with the company for more than 11 years
Companies Similar to Callsign
Callsign Corporate Information: FAQ
Data Privacy
GDPR COMPLIANT
SignalHire complies with the General Data Protection Regulation (GDPR). SignalHire follows GDPR requirements, including but not limited to rights of data subjects to access, correct, or delete their personal information and supports the right to be forgotten.
CCPA COMPLIANT
SignalHire is CCPA-compliant and provides California residents the right to know, access, opt out, and request deletion of their personal data.
