Penetration Tester
Posted 1 day ago by Totaljobs
Negotiable
Outside
Undetermined
Clerkenwell, City of London (EC1)
Summary: The role of Infrastructure Penetration Tester involves conducting hands-on penetration testing across external and internal networks for a significant multi-phase testing programme. The position requires reviewing system configurations and identifying vulnerabilities within critical infrastructure. The tester will collaborate with a small team and deliver testing in line with industry standards. This contract role is based in Clerkenwell, Greater London, and is classified as outside IR35.
Key Responsibilities:
- Conduct comprehensive external and internal infrastructure penetration tests, starting with perimeter systems and moving into internal networks.
- Perform configuration reviews across servers, firewalls, routers, and network devices.
- Execute API security testing to assess authentication, data access, and integration risks.
- Deliver CHECK-style network and infrastructure testing in line with industry standards.
- Collaborate with the project lead and wider team across a six-phase testing programme.
Key Skills:
- Proven background in infrastructure penetration testing within complex network environments.
- Strong understanding of networking, configuration management, and common attack vectors.
- Experience performing API and configuration reviews.
- Excellent report writing and communication skills for both technical and non-technical audiences.
- Ability to work on-site in London for key phases of testing.
- Collaborative mindset, with the ability to work as part of a small testing team of 3-4 people.
Salary (Rate): undetermined
City: Clerkenwell
Country: United Kingdom
Working Arrangements: undetermined
IR35 Status: outside IR35
Seniority Level: undetermined
Industry: IT
Penetration Tester
Clerkenwell, Greater London
Contract
Outside IR35
Job Description
Infrastructure Penetration Tester
An organisation is delivering a significant multi-phase testing programme and is looking for an experienced Infrastructure Penetration Tester to join the team.
This role will focus on hands-on penetration testing across external and internal networks, reviewing system configurations, and identifying vulnerabilities within critical infrastructure.
- Conduct comprehensive external and internal infrastructure penetration tests, starting with perimeter systems and moving into internal networks.
- Perform configuration reviews across servers, firewalls, routers, and network devices.
- Execute API security testing to assess authentication, data access, and integration risks.
- Deliver CHECK-style network and infrastructure testing in line with industry standards.
- Collaborate with the project lead and wider team across a six-phase testing programme.
Required Skills and Experience
- Proven background in infrastructure penetration testing within complex network environments.
- Strong understanding of networking, configuration management, and common attack vectors.
- Experience performing API and configuration reviews.
- Excellent report writing and communication skills for both technical and non-technical audiences.
- Ability to work on-site in London for key phases of testing.
- Collaborative mindset, with the ability to work as part of a small testing team of 3-4 people.
Additional Information
Contract role.
Outside IR35.
If you are an Infrastructure Penetration Tester with experience across networks, configurations, and APIs, and you are looking for a hands-on role in a collaborative team delivering a major London-based project, this could be a strong opportunity