Data Scientist

Data Scientist
Inside IR35: £600 - £650 p/d
Active SC required
Initially till March 2027, rolling extensions from there
Primarily remote: occasional travel to London
Which AI model is best at finding a vulnerability before an attacker does? Come and prove it.
You'll join a central government cyber security team at the heart of the UK's new push to use frontier AI for cyber defence. Their AI code-scanning pilot is already finding real weaknesses across government. Now they need you to turn it into hard evidence.
What you'll do
Design and run head-to-head tests of frontier models (Claude, OpenAI, Gemini and sovereign options) on real cyber use cases
Build the test datasets and scoring that show which model wins for each job, and why
Measure what matters: accuracy, false positives, cost and speed
Turn your results into clear evidence senior leaders can act on
Work alongside AI engineers scaling the pilot into a live product
What you'll bring
Active SC clearance (essential)
Hands-on experience evaluating LLMs; you've tested them, not just used them
Strong Python and statistics, and you're at home with messy real-world data
You take ownership and thrive with light-touch oversight
A genuine interest in cyber security
Bonus points: Inspect (AISI's evaluation framework), promptfoo, LLM-as-a-judge, or security data such as scanner findings, CVEs and SIEM alerts.
Good to know: this role is about applying models, not training or fine-tuning them.
...