Tessian People

We really believe people are the most important decision makers in any organization. To create breakthrough technology that protects all people, we approach the challenge from different perspectives and experiences. We’re a group of data scientists, engineers, designers, creative thinkers and commercial experts passionate about protecting people processing data in the enterprise.

Tessian Founders

Tim Sadler

Chief Executive Officer and Co-Founder

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Ed Bishop

Chief Technology Officer and Co-Founder

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Tom Adams

Head of Client-Side Engineering and Co-Founder

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Executive Team

Sabrina Castiglione

Chief Financial Officer

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David Katz

Vice President, Global Sales

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James Evans

Head of Strategy

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Ben Freeman

Head of US

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Kelli Hogan

Head of Marketing

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Abhirukt Sapru

Head of EMEA and APAC

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Andy Smith

Head of Engineering

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Henry Trevelyan Thomas

Head of Client Development

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Board of Directors

Suranga Chandratillake

General Partner at Balderton Capital

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Luciana Lixandru

Partner at Accel

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Ian Hamilton

Investor

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Matt Miller

Partner at Sequoia

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Tim Sadler

Chief Executive Officer and Co-Founder at Tessian

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Ed Bishop

Chief Technology Officer and Co-Founder at Tessian

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A new era of cybersecurity requires a new generation of thinkers.

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We have unconventional backgrounds, fascinating stories and a shared passion for keeping people and data safe. Learn more about the different teams at Tessian that design, build and serve our customers with Human Layer Security for Email.