AI Security Red Team Engineer

Company: Refractal Ltd
Apply for the AI Security Red Team Engineer
Location: London
Job Description:

Refractal Ltd in Greater London seeks an experienced security tester to evaluate AI systems under adversarial pressure. You will design and run authorised assessments of AI applications and agents, and translate findings into stronger defences with the engineering and research teams.

The role requires hands-on offensive security with web apps/APIs, authentication and permission concepts, plus the ability to automate tests and explain practical impact.

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Posted: October 21st, 2026