Senior Penetration Tester - Consultancy

Job description

Ready to take the next step in your career?

Join the world's first AI-managed IT and security platform, replacing the traditional MSP model with a single fixed-price subscription covering managed IT, defensive security, and unlimited offensive testing. Serving customers across 90+ countries with agentic AI running through every layer of operations, the UK-headquartered organization holds ISO 27001, PCI-DSS, and CREST certifications.

This is a great opportunity for a Senior Penetration Tester to deliver hands-on testing across infrastructure, networks, web applications, and APIs for varied client environments. The ideal candidate will work on technically challenging engagements while contributing to a wider security operation, rather than simply delivering standalone penetration tests.

Responsibilities

• Deliver infrastructure, network, web and API penetration tests.
• Identify and exploit vulnerabilities and realistic attack paths.
• Conduct manual testing alongside automated tooling.
• Produce clear, technically detailed client reports.
• Present findings and remediation advice to clients.
• Contribute to offensive security methodologies and tooling.
• Support junior testers and share technical knowledge.

Skills/Must Have

• 3+ years' commercial penetration testing experience.
• Strong understanding of offensive security methodologies.
• Infrastructure, network and web application testing experience.
• Good understanding of Active Directory and Windows.
• Experience with Burp Suite, Nmap, Metasploit and Kali.
• Scripting experience with Python, PowerShell or Bash.
• Strong communication and client-facing skills.
• Curious, technically minded and solution-oriented approach.

Desirable Skills

• CREST CRT/CCT
• Other recognised offensive security certifications
• Certifications are desirable, not essential. Commercial experience and hands-on technical capability are the priority.

Benefits

• Work across varied and technically challenging client environments.
• Join an established offensive security function with genuine technical depth.
• Develop your skills across penetration testing and wider offensive security.

Salary

• £50,000 - £65,000 depending on experience

Extra information

Status

Open

Education Level

Secondary School

Location

Greater London

Type of Contract

Full-time jobs

Salary indication

Between £50,000 and £65,000 Per Month

Published at

01-11-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English