Overview

Job Title: Lead Penetration Tester / Offensive Security Lead

Location: London, Birmingham, or M4 Corridor (with weekly client office visits)

We are looking for an experienced Lead Penetration Tester / Offensive Security Lead to take ownership of our clients high-profile engagements, guide a team of skilled testers, and drive technical excellence across our offensive security practice. This role is ideal for someone who combines deep hands-on technical expertise with the ability to lead, mentor, and deliver at scale.

Responsibilities

• Own high-profile offensive security engagements and guide a team of testers.
• Develop and deliver technical excellence across the offensive security practice.
• Lead red team operations, shape methodology, and drive impact for clients.
• Mentor and develop junior consultants; manage risk and ensure outcomes are aligned with client objectives.
• Engage with executives, board members, and technical teams to communicate findings and recommendations.

Qualifications

• Strict Requirement: Advanced penetration testing certifications such as OSEP, CCSAM, CTL (or equivalent). Strong foundational certifications such as OSCP, CTM, CRT, or OSWA are also required.
• Significant professional experience in offensive security (red teaming, advanced penetration testing, adversary simulations, bug bounty, or high-level CTF competitions).
• Proven leadership in delivering complex client engagements, managing risk, and ensuring impactful outcomes.
• Ability to mentor and develop junior consultants, lead red team operations, and shape methodology.
• Deep technical expertise across network infrastructure, operating systems, applications, and protocols, with a track record of identifying and exploiting critical weaknesses.
• Proficiency with core offensive tools (Metasploit, Burp Suite, Nessus, Cobalt Strike, Caido/Zap, and other C2 frameworks). Bonus points for building tools, contributing to open source, or creating novel attack chains.
• Strong scripting and development skills (Python, Bash, PowerShell, etc.) for tool-building and automation.
• Excellent communication and reporting skills, with the ability to engage directly with executives, board members, and technical teams alike.

Why Join

• Lead mission-critical offensive security projects with visibility at the highest levels of client organisations.
• Shape strategy, methodology, and tooling across the practice.
• Mentor and inspire a team of ethical hackers, fostering technical growth and professional development.
• Flexible base location (London, Birmingham, or M4 corridor) with weekly on-site collaboration with clients.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Information Technology
• Industries: Business Consulting and Services

Information contained in this posting reflects the responsibilities and requirements for the role and is not intended to be all-inclusive.