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Senior Penetration Tester - CTL

London, England, United Kingdom💼 Full-time🗓 2026-08-10 → 2026-09-26

Core

Deliver offensive security assessments for web applications, APIs, and infrastructure on behalf of key clients.

Role type

Senior Penetration Tester (Team Leader)

Builds

Client-facing security testing engagements and technical proposals

Domain

Cybersecurity / Offensive Security

Deliverable

client delivery

Required skills

Infrastructure penetration testing, Web application testing, API testing, Device configuration review, Technical reporting, Pre-sales support, Security clearance management

Preferred skills

Cloud security (AWS, Azure, GCP), LLM/AI testing, Adversary Simulation / Red Teaming, Python, PowerShell, Bash

Technologies

CREST, Cyber Scheme, NCSC, DV clearance, Hack the Box, TryHackMe, TSCM

Responsibilities

Lead high-quality offensive security assessments, Produce written and verbal reports for clients, Support sales team with pre-sales and technical input into tenders, Carry out research and service development, Perform report QA, Collaborate with teams on client projects

Seniority

Senior, hands-on IC with leadership responsibilities

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