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Threat Intelligence Lead



Posted over 30 days ago...


Join Tessian as they are looking for a Threat Intelligence Lead


icon Salary

No salary declared 😔

icon Location

UK - (Remote / London Office)

icon Expires

Expires at anytime

Tessian protects every business’s mission by securing the human layer 

The Tessian Cloud Email Security platform helps enterprises defend against email attacks, protect against data loss and respond to security incidents more efficiently. By combining artificial intelligence with an understanding of employee email behavior, Tessian is able to prevent complex email attacks and data loss incidents that evade Secure Email Gateways and the built in security controls of M365 and Google Workspace. 

The world's largest banks, healthcare organizations, hedge funds and law firms all use Tessian to secure their email environments, data and people whilst saving their security team time. In 2022 alone, Tessian prevented hundreds of thousands of business email compromise attacks, data loss incidents and  saved hundreds of hours of work for security teams. 

Tessian is headquartered in London and Boston with 200+ employees globally and has raised over $120m in venture capital funding from world leading investors like Sequoia, Accel, Balderton, March, Citi and Okta. Tessian was recognized as one of Fast Company’s Most Innovative Companies for 2022. More information can be found at

Data / Threat Analysis at Tessian

As a high-growth scale-up, our email datasets are growing at an exponential rate. This is a great problem to have as it allows us to train best-in-class machine learning models to prevent previously unpreventable data breaches. We have scaled to the point where there are so many emails flowing through our system that need more human eyes to understand some more advanced patterns and feed them back into our algorithms.

You will lead our Threat Intelligence team and work day-to-day with Threat Analysts, Data Scientists and Engineers to build out the flow of identifying any weak points in our algorithms and coming up with ways - in collaboration with our data scientists - to detect these types of emails. You will also work with Sales Engineers, identifying a better flow to surface the value of what Tessian does to our customers, which requires you to deeply understand the product and the way our customers benefit from it.

We view this role as a hugely impactful, high-leverage role and strongly believe that if we can have a smooth and robust feedback flow from incoming emails to outgoing ideas that we can deliver more value to our clients through the data breaches we prevent. In this role you should be a spokesperson both internally and externally in the Threat Intelligence landscape.

Some interesting projects we’re working on:

Building an advanced threat intelligence infrastructure

Training and Deploying advanced ML models on a combination of structured and unstructured (NLP) data.

Improving the deployment flow of algorithm changes to decrease time from idea to production

Automating reporting to surface product value to our customers

Designing the next generation data-lake setting ourselves up to handle massive future scale


Look at advanced email attacks and understand the underlying tactics used to try to bypass our systems

Label these emails to their correct categories to help the Algorithm teams to improve their ML Models

Take insights from these emails and leveraging our threat intelligence infrastructure to block similar threats in the future

Surfacing these ideas back to the Data Scientists so they can deploy more robust ways of blocking these tactics

Presenting to the wider company about threats we’re seeing to keep them informed

Taking calls with customers using our product to understand and surface the value of Tessian

Improving the tooling for reporting this value back to customers

Writing blog posts about new and emerging threats


Have basic+ Python knowledge and the ability to look at datasets in Python

Have a real hunger for learning and pushing Threat Intelligence around Email Security to the next level

Ideally have experience in the email security field

Ideally have some experience with Machine Learning systems

Has an ability to break down ambiguous problems into concrete, manageable components and think through optimal solutions

Enjoys “getting their hands dirty” by digging into complex operations

Takes a high degree of ownership over their work

Is a clear communicator with professional presence

Has strong listening skills; open to input from other team members and departments

Has great attention to detail

If you're not sure that you exactly fit all of the above criteria, please do get in touch anyway. We're always willing to speak to great candidates even if you don't feel you meet every criteria listed!

Tessian is an equal opportunity employer, committed to equality and diversity amongst both our employees and prospective applicants. The Human Layer we're securing is diverse, and we know we need to be diverse and inclusive to successfully create HLS that reflects this. You can read our equality and diversity statement here.

As part of our commitment to equality and diversity, we're also a corporate member of the WISE Campaign for gender equality in STEM & we're a founding member of the WEDS network driving diversity & inclusion in startups.

By submitting your application to Tessian, you consent to Tessian retaining your information and contacting you about future job opportunities, that may be of interest, for up to 2 years in accordance with our Privacy Policy


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