1. What is a Data Scientist at Tessian?
At Tessian, a Data Scientist plays a pivotal role in the company’s mission to secure the "Human Layer." unlike traditional cybersecurity approaches that focus on networks or devices, Tessian uses machine learning to protect people from advanced email threats like phishing, spear-phishing, and accidental data loss. This role sits at the intersection of cybersecurity, natural language processing (NLP), and behavioral anomaly detection.
You will not just be analyzing static datasets; you will be building and deploying models that must make split-second decisions on live email traffic. The work involves tackling complex problems such as detecting brand impersonation, understanding relationship graphs between employees, and identifying subtle textual cues that indicate a security threat. The impact of your work is immediate—a single model improvement can stop thousands of malicious emails from reaching inboxes.
This position requires a blend of research capability and engineering mindset. You will work closely with engineering teams to productionize your models, ensuring they are scalable and low-latency. For candidates, this represents a challenging but rewarding opportunity to apply advanced ML techniques to high-stakes, real-world problems where accuracy and speed are paramount.



