What We're Building

Tessian is a machine intelligent email security platform to automatically prevent security threats like misaddressed emails, data loss and non-compliance. Tessian uses machine learning to understand normal email communication patterns in order to automatically identify email security threats in real time, without the need for end user behaviour change or pre-defined rules and policies. The Tessian platform makes email safe at some of the world’s largest enterprises across the financial, legal and technology sectors.

For more, visit www.tessian.com.

Tessian is an amazing place to work; Impressive colleagues, incredible impact, and accelerated career progression. We give our people real responsibility and empower them to achieve excellence, so if you're smart and ambitious, and you want to work for a great fast-growing start-up, this is the place for you!
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Jobs at Tessian

Tessian Team

Tim Sadler
CEO & Co-founder at @Tessian. Finance / IB Background (@HSBC Global Banking & Markets, @GE). Studied Engineering at @Imperial College London
Abhirukt Sapru
Head Biz Dev @Tessian • Former CEO @Snyffle • Former Investment Banker at @Citigroup • Studied Mathematical Finance at @USC Marshall School of Business
Johan Kestenare
Imperial College Statistics MSc, Dauphine University Master
Sabrina Castiglione
Chief of Staff at TESSIAN Member of the WISE Young Women's Board Masters of Chemistry from Imperial College
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Have Questions? Ask Us Anything

What are some of the toughest engineering problems CheckRecipient is facing now?
Scaling machine learning software is a really exciting and engaging challenge our developers are always working on, as well as R&D for our exciting new threat modules!
Sabrina Castiglione
Chief of Staff at Tessian since 2016
How many people are you hiring in the next year?
Depends but could be anywhere from 40-60, bringing us to 80-100 people by end-2018!
Sabrina Castiglione
Chief of Staff at Tessian since 2016

Tessian Investors

Tim Jackson
Venture capitalist, investor, entrepreneur, writer, boatrocker
Keith Hyman
Early-retired business lawyer
Ophelia Brown
Founder, Partner Blossom Capital. Looking for creative, passionate and ambitious entrepreneurs.
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