Working at Tessian |

Tessian Overview

London, England
51 to 200 employees
Company - Private
Computer Hardware & Software
£5 to £10 million (GBP) per year
Tessian is a human layer security platform to automatically prevent cybersecurity threats like spear phishing, misaddressed emails, unauthorized emails (data loss) and non-compliance.

We’re a team of mathematicians, data scientists ... Read more

Mission: Tessian’s mission is to keep the world’s most sensitive data and systems private and

We’re building the world’s first Human Layer Security (HLS) platform to fulfil this ... Read more

Company Updates

  • Have you checked out our Instagram at ? We've just posted photos & videos from our recent PRIDE 2019 Social - Tessfest - and our Great British Bolognese Off!

    Tessian (@tessianofficial) * Instagram photos and videos

    350 Followers, 62 Following, 142 Posts - See Instagram photos and videos from Tessian (@tessianofficial)

  • With human error accounting for the majority of all data breaches, people are considered the weakest link when it comes to security. But beyond dismissing errors as human nature, have you ever wondered why people make these mistakes in the first place?

See AllSee All

Tessian – Why Work For Us?

At Tessian, we believe in building teams of high performing, brilliant individuals that make work a great and enjoyable place to be! We empower our employees to achieve and develop, giving them the responsibilities, scope and opportunities  that allow them to step up as soon as they're ready to progress. In a fast-growing company where everyone has substantial and visible impact, career advancement is limitless.

We strive to be bold and courageous, and we encourage one another to achieve, bringing passion and dedication to our work that is amplified by the support of our peers and management within Tessian. Does the idea of working with dynamic, smart colleagues and doing your life's best work excite you? Then you're a great fit for Tessian and we'd love to hear from you! You can see all our open roles here.

Tessian Reviews

  • "Developing at speed"

    • Work/Life Balance
    • Culture & Values
    • Career Opportunities
    • Comp & Benefits
    • Senior Management
    Former Employee - Tech Lead in London, England
    Former Employee - Tech Lead in London, England
    Positive Outlook
    Approves of CEO

    I worked at Tessian full-time (More than a year)


    Tessian (CheckRecipient when I joined) did really well, grew really fast, got to work on greenfield projects from scratch (including architecture) and take them all the way to delivery. Good tech, Good challenges to solve. Really bright people that were part of what attracted me. A lot of scope to have real impact


    Rate of change means you cant o back and spend more time on things and decisions have to be made fast. It grew past my sweet spot of early stage company that I wanted to be at, but enjoyed the work I did there. I know people still there, still enjoying it a lot, but it's growing and changing very fast, and I would have preferred the tiny-startup experience for longer

    Advice to Management

    Appreciate the great people you have, and help people transition through/ out of the change, it's not always easy

See All 52 Reviews

Tessian Photos

Tessian photo of: Tessian
Tessian photo of: Tessian
Tessian photo of: Founders - Tim, Ed and Tom
Tessian photo of: CFO, Sabrina, and our 100th Employee Celebration!
Tessian photo of: Marketing
Tessian photo of: Outbound Growth
See All PhotosSee All

Tessian Interviews



Getting an Interview

Getting an Interview




  1. Featured Interview


    Operations Interview

    Anonymous Interview Candidate
    No Offer
    Positive Experience
    Average Interview


    I applied online. I interviewed at Tessian.


    The hiring process consisted of a phone screen, behavioral phone interviews, and a take home case to complete and present on a following call. Scheduling was easy via their too, and everyone was friendly, helpful, communicative, and transparent.

    Interview Questions

    • What is your experience with managing complex projects?   Answer Question
See All 43 Interviews

Tessian Awards & Accolades

  • Overall Enterprise Email Security Solution Provider of the Year, Cyber Security Breakthrough, 2017
  • Best Innovation in Data Protection and Privacy, CogX, 2017
  • Most Innovative Cyber Security Company, INFOSEC, 2017
  • Global Excellence Award for Best Security Startup, Info Security Product Guide, 2017
  • Best Machine Intelligence StartUp, Legal Geek, 2016
See More

Work at Tessian? Share Your Experiences

  • Star
  • Star
  • Star
  • Star
  • Star
Click to Rate