Colin Constable is the CTO and co-founder of Atsign, where he is pioneering secure,
identity-first connectivity for people, devices, AI agents, and systems.
Colin has over 40 years of experience in telecommunications, networking, and enterprise
security. He has held senior technical leadership roles at Deutsche Bank, Juniper Networks,
and Credit Suisse, following his foundational years as a technical officer at British Telecom.
His work focuses on enabling organizations to securely connect distributed infrastructure,
protect IoT and edge environments, and build Zero Trust architectures that eliminate
unnecessary network exposure. As enterprises increasingly adopt agentic AI, Colin is
advancing a future where cryptographic identity and decentralized security form the
foundation for trusted communication between agents, applications, and infrastructure.