Penetration Tester
Role Description & Technical Scope
<p class="text-muted mb-3">Essential Roles & Responsibilities</p>
<p class="text-muted mb-3">As a Penetration Tester at Claranet, you will able to deliver you own web application tests and through training and partnering,</p>
<p class="text-muted mb-3">you will be involved in a full range of testing work from mobile app and infrastructure testing to social engineering and Red Team exercises.</p>
<h5 class="fw-bold text-success mt-4 mb-3">Key Responsibilities</h5>
<ul class="list-unstyled job-desc-list mb-3">
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Undertaking web and mobile application testing and infrastructure testing engagements</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Using the opportunities provided by the business to improve skills and capabilities into all areas of testing</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Working with key clients providing bespoke consultancy, analysis and expertise</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Collaborating with other Claranet Business Units on large client digital transformation projects</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Delivering targeted research and development in line with direction of the business</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>If not achieved already, working towards CREST qualifications; CPSA, CRT and CCT</span></li>
</ul>
<p class="text-muted mb-3">Essential Technical:</p>
<ul class="list-unstyled job-desc-list mb-3">
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Have a good understanding of web & mobile application and infrastructure testing and methodologies</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Able to manually and proficiently exploit web application and network infrastructure vulnerabilities</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Have a logical and time-conscious approach to report writing</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Have a working knowledge of common programming languages such as C, C++, C#, Java</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Have experience of at least one scripting language such as Ruby, Python or Perl</span></li>
</ul>
<p class="text-muted mb-3">Essential Experience:</p>
<ul class="list-unstyled job-desc-list mb-3">
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Delivering chargeable web app testing engagements</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Providing remediation advice</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Producing accurate technical reports</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Working under pressure of deadlines and structuring workload accordingly</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Problem-solving, helping others to understand complex ideas</span></li>
</ul>
<p class="text-muted mb-3">Essential General:</p>
<ul class="list-unstyled job-desc-list mb-3">
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Client facing, able to confidently and professionally represent the company</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Must be self-motivated and able to work in an independent manner as well as part of a team</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Excellent written and oral communications skills</span></li>
</ul>
<p class="text-muted mb-3">In Addition, The Following Are Highly Desirable:</p>
<ul class="list-unstyled job-desc-list mb-3">
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Security clearance (or eligibility for clearance)</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>CTM or CTL status</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>CISSP, CISA, CEH, OSCP or equivalent reputable information security certifications</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Familiarity with testing cloud environments</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Public speaking experience</span></li>
<li class="d-flex align-items-start mb-2"><i class="mdi mdi-circle-medium text-success fs-15 me-2 mt-1"></i><span>Full UK driving license</span></li>
</ul>
Ready to apply for this cyber security position?
This opportunity is hosted on CV-Library. Click below to view full details and submit your application.
Key Details
- Date Posted: 22 Sep 2026
- Location: LS1, Leeds, West Yorkshire
- Employment: Permanent
- Workplace: Hybrid
- Domain: IT
Need an ATS CV for this role?
Optimize your cyber CV with ATS-friendly templates before submitting your application.
Build Free CV NowEmployer Profile
CV-Library
Verified Tech EmployerEnterprise technology firm or security consultancy operating across the UK digital defense ecosystem.
More Jobs at CV-Library