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Penetration Tester - 2 weeks Outside of IR35

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My client is looking for a Penetration Tester to join them on a 2 week contract. Based in Shoreditch, London, you will have to be 5 days per week in the office. There is a chance it could be extended by a week potentially.

About the Penetration Tester role:

What we’re looking for:

  • Information security experience in one or more of the following areas: red teaming, penetration testing, application security, or network security.
  • Strong knowledge of Web, API and mobile application security testing frameworks and methodologies.
  • Familiarity with penetration testing tools such as BurpSuite, OWASP Zap, SoapUI etc.
  • Strong knowledge of application security best practices including OWASP Top 10.
  • Should have a strong understanding of networking concepts, Windows, Linux and Mac operating systems, cloud and web application vulnerabilities and exploitation.
  • Experience with threat modeling concepts and frameworks (CVSS, MITRE ATT&CK, DREAD, or STRIDE)
  • Technical knowledge in software engineering, system and network security, authentication and security protocols, cryptography, and network/web related protocols (e.g., TCP, UDP, HTTP, HTTPS)

Any of these would be advantageous (but we'd still love to hear from you):

  • Bachelors Degree or equivalent certification
  • Security testing of cloud environments.
  • Experience in offensive security tool development, customization or expansion.
  • Penetration testing experience with Internet of Things (IoT) devices, mobile applications, or code review.
  • One or more of the following certifications (OSCP, OSCE, GPEN, GXPN, CRTO, CREST Certified Simulated Attack Manager)

High Priority

  • Offensive Security expertise
  • Embedded systems / Real-Time Operating Systems / Board Support Packages
  • ARM-based system architectures
  • Hardware / software exploitation

Desirables

Knowledge of medical

If the above is of interest please apply to this role or call me on 0207 509 8040 or email your CV to darius.goodarzi@robertwalters.com

Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates

Contract Type: Temporary Interim Management

Specialism: Technology & Digital

Focus: Information Security

Industry: Medical and Nursing

Salary: £850 - £900 per day + Outside IR35

Workplace Type: On-site

Experience Level: Senior Management

Location: London

Job Reference: V6IUTV-2F013BC0

Date posted: 2 April 2026

Consultant: Darius Goodarzi