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Penetration Tester

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Lawrence Harvey

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Location:
United Kingdom

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

80000.00 - 100000.00 GBP / Year
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Job Description:

A rapidly growing leader in proactive cybersecurity services is expanding its consulting team and seeking a Security Consultant with a strong background in mobile application penetration testing. This role is ideal for a hands-on penetration tester who enjoys uncovering complex vulnerabilities and delivering meaningful security improvements for enterprise clients. You will work alongside experienced security professionals, leveraging advanced tooling, automation, and research-driven methodologies to perform deep technical testing across mobile applications and APIs. The focus of this role is on producing high-quality, actionable findings that help organizations strengthen their security posture.

Job Responsibility:

  • Perform penetration testing engagements on mobile applications (iOS and Android) and associated APIs
  • Identify weaknesses related to data storage, network communications, authentication, and cryptography
  • Analyze mobile application behaviour, sandboxing, and OS-level security controls
  • Produce clear, well-structured penetration testing reports aligned with client-specific standards and workflows
  • Collaborate with internal teams and clients to explain findings and recommend remediation strategies
  • Research and develop new tools, techniques, and testing methodologies to improve assessment quality
  • Support consulting operations through documentation, reporting, and engagement-related administrative tasks

Requirements:

  • 2–3+ years of experience conducting application or mobile penetration testing
  • Hands-on experience with offensive security tools such as Kali Linux, Burp Suite, Metasploit, Nessus
  • Mobile-focused tools including Frida, Drozer, Objection, and Ghidra
  • Solid understanding of mobile data security, encryption, and secure communications
  • Strong working knowledge of Android and iOS operating systems
  • Familiarity with common offensive and defensive security concepts and network protocols
  • Deep understanding of the OWASP Top 10 and relevant security frameworks
  • Working knowledge of Windows, Linux, and macOS internals
  • Ability to work independently while collaborating effectively within a team
  • Strong written and verbal communication skills
  • Willingness to travel up to 5–10%
  • Ability to support an 8-hour workday, with occasional evenings or weekends as required by project timelines

Nice to have:

  • Mentoring or coaching junior team members
  • Sharing security knowledge through blogs, webinars, or conference presentations
  • Experience with scripting or programming languages such as Python, Ruby, Perl, Java, C/C++, or C#
  • Industry-recognized offensive security certifications (e.g., OSCP, GPEN, GXPN, GWAPT, CISSP)
  • Experience with ARM reverse engineering
  • Development of Frida scripts or tools to bypass protections or exploit mobile application vulnerabilities

Additional Information:

Job Posted:
January 29, 2026

Employment Type:
Fulltime
Work Type:
Remote work
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