Senior Penetration Tester

Penetration Tester

Are you an ambitious cybersecurity professional with a passion for uncovering vulnerabilities and strengthening digital defences?

Join Trustmarque’s Security Testing Practice as a Penetration Tester and play a key role in protecting our clients’ critical systems. Working alongside experienced consultants, you’ll deliver high‑quality penetration testing engagements, contribute to continuous improvement, and grow your expertise in a collaborative, knowledge‑sharing environment.

Sharpen Your Skills, Strengthen Our Security:
Keep your penetration testing qualifications current and continue developing your technical expertise in line with business needs.

Deliver Quality Testing:
Support the delivery of IT Health Checks and penetration tests, identifying vulnerabilities and providing clear, actionable recommendations to clients.

Collaborate and Learn:
Work closely with senior consultants, sharing insights and best practices while contributing to a culture of learning within the Security Testing Practice.

Develop Broad Expertise:
Expand your skill set to offer a range of security testing services that support evolving business and client requirements.

• Be passionate about the full security lifecycle.
• Engage confidently with technical and non‑technical stakeholders.
• Demonstrate curiosity, adaptability, and a solution‑focused mindset.
• Translate complex technical findings into clear, accessible reports.

• Hands‑on experience in penetration testing or IT Health Check delivery.
• Current penetration testing qualification such as CREST Practitioner Security Analyst (CPSA),
  Crest Registered Tester (CRT), or Cyber Scheme Team Member (CSTM).
• 2+ years of penetration testing experience (or equivalent practical experience).
• Eligibility to obtain and maintain UK security clearances
  .
• Familiarity with common tools such as Burp Suite, Nmap, Nessus, Metasploit
  , etc.
• Understanding of network protocols (TCP/IP, OSI model) and common web application vulnerabilities.

Commitment, Collaboration, Inclusion, Innovation, and Inspiration.

Join us and help make Trustmarque a place where everyone feels they belong and can thrive.

We offer competitive pay,
25 days holiday (rising to 27), 2 volunteering days, 1 personal day, plus bank holidays. Our benefits include a company‑matched pension
, life assurance
, enhanced parental leave
, cycle2work scheme
, and more.

Delivering the value of technology.

For over three decades,
Trustmarque has been a trusted partner to customers and technology vendors, helping organisations adopt innovative solutions that make a real impact. We are part of the Trustmarque Group
, which includes Livingstone Technologies
.

Learn more at

Trustmarque is proud to be an equal opportunity employer
, committed to creating a diverse, inclusive, and equitable workplace.