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Permanent

Penetration Tester

Claranet
Leeds
money-bag Negotiable
Posted: 30 July 2026 (Today)
Closing date: 29 August 2026
Ref: 225431101

Essential-Roles-&-Responsibilities

As-a-Penetration-Tester-at-Claranet,-you-will-able-to-deliver-you-own-web-application-tests-and-through-training-and-partnering,-you-will-be-involved-in-a-full-range-of-testing-work-from-mobile-app-and-infrastructure-testing-to-social-engineering-and-Red-Team-exercises.

Key-Responsibilities:

  • Undertaking-web-and-mobile-application-testing-and-infrastructure-testing-engagements
  • Using-the-opportunities-provided-by-the-business-to-improve-skills-and-capabilities-into-all-areas-of-testing
  • Working-with-key-clients-providing-bespoke-consultancy,-analysis-and-expertise
  • Collaborating-with-other-Claranet-Business-Units-on-large-client-digital-transformation-projects
  • Delivering-targeted-research-and-development-in-line-with-direction-of-the-business
  • If-not-achieved-already,-working-towards-CREST-qualifications;-CPSA,-CRT-and-CCT

Essential-Technical:

  • Have-a-good-understanding-of-web-&-mobile-application-and-infrastructure-testing-and-methodologies
  • Able-to-manually-and-proficiently-exploit-web-application-and-network-infrastructure-vulnerabilities
  • Have-a-logical-and-time-conscious-approach-to-report-writing
  • Have-a-working-knowledge-of-common-programming-languages-such-as-C,-C++,-C#,-Java
  • Have-experience-of-at-least-one-scripting-language-such-as-Ruby,-Python-or-Perl

Essential-Experience:

  • Delivering-chargeable-web-app-testing-engagements
  • Providing-remediation-advice
  • Producing-accurate-technical-reports
  • Working-under-pressure-of-deadlines-and-structuring-workload-accordingly
  • Problem-solving,-helping-others-to-understand-complex-ideas

Essential-General:

  • Client-facing,-able-to-confidently-and-professionally-represent-the-company
  • Must-be-self-motivated-and-able-to-work-in-an-independent-manner-as-well-as-part-of-a-team
  • Excellent-written-and-oral-communications-skills

In-Addition,-The-Following-Are-Highly-Desirable:

  • Security-clearance-(or-eligibility-for-clearance)
  • CTM-or-CTL-status
  • CISSP,-CISA,-CEH,-OSCP-or-equivalent-reputable-information-security-certifications
  • Familiarity-with-testing-cloud-environments
  • Public-speaking-experience
  • Full-UK-driving-license

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