Offensive Security & Pentesting jobs in United Kingdom

Offensive Security & Pentesting roles in or open to United Kingdom. 8 open jobs from 6 employers, 5 with salary shown. Updated Oct 1, 2026.

• Alignment Red Team - Research Engineer/Research ScientistAI Security Institute London, UK£65k–145k/yrSep 15, 2026
• Senior Offensive Security EngineerAtari Newcastle upon Tyne, England, United KingdomSep 9, 2026
• Misuse Red Team - Research Engineer/Research ScientistAI Security Institute London, UK£65k–145k/yrSep 2, 2026
• Control Red Team - Research Engineer/Research ScientistAI Security Institute London, UK£65k–145k/yrSep 2, 2026
• AI Red Team EngineerApollo Research On-siteLondon & San Francisco$182k–238k/yrSep 1, 2026
• Senior Penetration Tester - CTMInstil Software Ltd RemoteRemote · GBJul 9, 2026
• Penetration TesterWPP United KingdonJul 3, 2026
• Member of Technical Staff (Offensive Security Engineer)Perplexity HybridSan Francisco$220k–405k/yrApr 2, 2026