Callsign Information
Summary
Callsign is a private company that has been in the industry for 15 years. The company currently specializes in the Computer & Network Security, Business Support Services areas. The position of the Chairman & CEO is occupied by Zia Hayat. Its headquarters is located at London, England, GB. The number of employees ranges from 100 to 250. The annual revenue of Callsign varies between 100K and 5.0M. Total funding of the company - $35M. To connect with Callsign employee register on SignalHire.
Organization Website | callsign.com |
Social Links |   |
Industries | |
Headquarters Location | London, England, GB |
Employees 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 | $100K - 5.0M |
Operating Status | Independent Company |
Competitors
Employees Turnover 4 quarter 2025
Number of employees switched from or switched to
Length of Employment
Employee tenure at Callsign shows a diverse range of experience levels:
1% have been with the company for less than 1 year13% for 1–2 years23% for 3–4 years34% for 5–7 years14% for 8–10 years16% have over 11 years of service at CallsignEx-employees positions
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