Cyber Security Penetration Tester
We are seeking a Cyber Security Penetration Tester to identify, assess and help remediate security weaknesses across applications, infrastructure, networks and cloud environments. You will plan and deliver authorised penetration tests, vulnerability assessments and red-team style engagements, using a combination of manual techniques and industry-standard tools. The role will involve testing web and mobile applications, APIs, internal and external networks, operating systems, wireless environments and cloud services.
Your responsibilities will include defining testing scopes and methodologies, conducting reconnaissance and exploitation activities safely, validating vulnerabilities, and assessing the potential business impact of identified risks. You will produce clear, accurate reports that explain technical findings, provide evidence and prioritise remediation actions. You will also present results to technical and non-technical stakeholders, support remediation discussions, perform follow-up testing, and contribute to the continual improvement of security testing procedures, tooling and knowledge-sharing activities.
Applicants should have practical experience in penetration testing, vulnerability assessment or a related cyber security role, with a strong understanding of common attack techniques, security controls and threat models. Experience with frameworks such as OWASP Testing Guide, OWASP Top 10, PTES or NIST is desirable. You should be comfortable using tools such as Burp Suite, Nmap, Metasploit and scripting languages including Python, PowerShell or Bash. Relevant professional certifications, such as CREST, OSCP, OSWE, GPEN or equivalent, are advantageous. Strong analytical, written and verbal communication skills are essential, along with the ability to work independently, manage competing priorities and maintain strict confidentiality. All testing must be performed ethically, within agreed authorisation and in accordance with applicable legal, regulatory and professional standards.
Cyber Security Penetration Tester
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