Penetration Tester

JR United Kingdom; Hemel Hempstead; Hybrid; GBP 45,000 - 65,000; Full time

Job summary

A leading cybersecurity consulting firm is seeking a highly skilled Penetration Tester to join their dynamic team. This role involves conducting thorough penetration tests, preparing detailed reports, and collaborating with clients to enhance security measures. The position offers the flexibility of remote work while engaging with a variety of industries.

Qualifications

• Minimum 2 years experience in penetration testing.
• Eligible for UK Security Clearance preferred.
• Strong understanding of OWASP Top 10 and MITRE ATT&CK.

Responsibilities

• Conduct penetration tests on various environments.
• Deliver client-ready reports with remediation advice.
• Collaborate with clients during testing and presentations.

Skills

Penetration Testing

Threat Simulation

Scripting

Automated Testing

Communication

Education

OSCP

CRT

CCT-INF

Tools

Burp Suite

Nmap

Metasploit

Job description

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Travel: Occasional travel to client sites or company events

Our client is a respected and rapidly growing leader in the cybersecurity and risk consulting space. Working with a wide range of organizations — from FTSE 100 companies to critical infrastructure and government entities — they provide high-quality security testing and advisory services across various industries.

This is an excellent opportunity to join a team that values your expertise, supports your growth, and offers the flexibility of remote working with the stimulation of varied engagements.

Key Responsibilities:

• Conduct thorough penetration tests on infrastructure, networks, cloud environments, and web applications.
• Deliver high-quality, client-ready reports detailing findings, impact, and practical remediation advice.
• Collaborate directly with client stakeholders during scoping, testing, and results presentations.
• Keep current with emerging threats, vulnerabilities, and tools in the offensive security landscape.
• Contribute to internal development of testing methodologies, tooling, and knowledge sharing.
• Experience with red teaming, threat simulation, or assumed breach testing.
• Scripting/automation with Python, Bash, or PowerShell.
• Previous consultancy or client-facing experience.
• Eligibility for or possession of UK Security Clearance (preferred but not required).
• Solid understanding of common attack techniques and vulnerability classes (e.g., OWASP Top 10, MITRE ATT&CK).
• Strong familiarity with tools such as Burp Suite, Nmap, Metasploit, etc.
• Excellent communication and reporting skills.

Required Qualifications:

• Demonstrable experience in penetration testing (minimum 2 years preferred).
• Hold at least one of the following certifications:
• OSCP (Offensive Security Certified Professional)
• CRT (CREST Registered Tester)
• CCT-INF (CREST Certified Infrastructure Tester)