Signal Messenger Employee Directory

Technology, Information and InternetCalifornia, United States51-200 Employees

Signal Messenger develops open-source privacy technology intended to protect user privacy and enable secure global communication. Based in San Francisco, California, it operates as a nonprofit organization focused on its mission and prioritizing users.

The company aims to make private messaging simple and widely available by combining robust security with features users expect from modern apps. Its reach includes millions of daily users and organizations that have integrated the underlying protocol into platforms serving billions. In May 2026, Signal introduced a security feature that warns users when messages come from unknown contacts to help guard against social engineering and phishing.

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