Company Location London, United Kingdom
Company Website

Tessian announces £9m Series A with Balderton Capital and Accel Partners

We’ve just announced our raise of £9m ($13m) in a Series A round led by Balderton Capital and Accel Partners. Last year our business grew 400% and our team expanded from 13 to 50 people; we have ambitious growth plans for the next year, spanning all areas including our product offerings and our sales & marketing divisions. We’re excited about where this next phase of our growth will take us - we hope you are too, so we encourage you to apply today to be part of the next leg of the Tessian journey.


Tessian is a machine intelligent email security platform to automatically prevent security threats like misaddressed emails, data loss and non-compliance. The Tessian platform makes email safe at some of the world’s largest enterprises across the financial, legal and technology sectors.

Founded by a team of Imperial College engineers in 2013, we’re a team of mathematicians, data scientists & engineers building breakthrough machine learning and natural language technology to analyse, understand & protect enterprise email networks.

We’re backed by world-leading venture capital funds who’ve invested in companies like Facebook, Slack, Dropbox, Improbable & Transferwise & we've been named on the prestigious Forbes 30 Under 30 list, crowned the “Best Security Startup” by WIRED magazine, and awarded “Best Innovation in Data Protection & Privacy” by CogX.

Our Team

You can check out some photos of our team on our Instagram, or check out our company page. You can also find us on Glassdoor.

Equality and Diversity

Tessian is an equal opportunity employer, committed to equality and diversity amongst our employees & applicants. You can read our equality and diversity statement here. We're also a corporate member of WISE with a staff member on the WISE Young Women's Board.

Important Notice

  • Please note that we do not accept applications or résumés from recruiters.
  • By submitting your application to Tessian, you consent to Tessian contacting you about future job opportunities, that may be of interest, for up to 2 years in accordance with our Privacy Policy.
  • Please note, that any job offers will be subject to the candidate passing background screening checks.

Current job openings at Tessian