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Senior Penetration Tester

March 17, 2022

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Job summary

We are currently expanding our team within Trustmarque and are looking for a Senior Penetration Tester to join as an active member of the Security Testing Practice. You will be an ambassador for the Practice and promote the brand. As a Senior Penetration Tester, you will lead and perform penetration testing and vulnerability assessments on web-based applications and networks to enhance network security for internal and external clients. As well as assisting in the design and implementation of the organizational information security solutions, and continuously enhancing information security approaches and methodologies.

Accountabilities and main responsibilities

Key responsibilities:

  • Ensure your personal penetration testing qualifications remain up to date and in line with business needs.
  • Act as a leader in engagements involving junior team members.
  • Coach and mentor junior team members through exam preparation and study.
  • Share knowledge and experience with other members of the Security Testing Practice team.


  • Proven track record of delivering a wide range of penetration testing services.
  • Current senior penetration testing qualification, such as Crest Certified Tester or Cyber Scheme Team Leader
  • Ability to maintain UK security clearances as required by the business.

Behaviours and abilities:

  • Passionate about the security lifecycle.
  • Ability to engage with senior executives of differing technical levels, and to encourage the buy in of our security ethos.
  • Confidence, flexibility and ability to think creatively and offer solutions to complex problems.
  • Ability to translate specialist, technical information into plain English.


  • Proficient in at least one scripting language, Bash, PowerShell, VB, Python etc.
  • Demonstrable experience of the use of penetration tools such as Nessus, Nmap, Metasploit, BurpSuite etc.
  • Solid understanding of the suite of TCP/IP protocols and the OSI model.
  • Ability to adapt to complex ever changing environments and to quickly understand, and exploit to your advantage, such environments.
  • Proven experience of testing web applications, their platforms and technologies and methodologies used to create them.
  • Solid experience of network and infrastructure penetration testing
  • Proven experience of carrying out network device reviews

Proven track record of carrying out ITHC’s for PCI DSS and PSN compliance.

About Trustmarque

At Trustmarque we strive to help our customers go further, innovate faster and achieve more through technology-enabled transformation. By making IT all about our customers, we pledge a partnership that ensures technology works to their advantage.

Our people are at the heart of our customer-centric business. When you join Trustmarque, you will work with some of the best experts in their field. Since mid-March 2020, all our staff have been working remotely and are given all the tools to work with effectively. Alongside this, we support our people’s mental health through regular work and well-being seminars and a team of dedicated mental health champions.

All interviews, assessments and background checks will continue to take place online, to completely remove the need for face-to-face contact. All Capita colleagues who can work from home should do so; and where it is not possible for colleagues to work remotely, we have taken important steps to protect those working from Capita’s offices. Social distancing, enhanced hygiene and safety measures are already in place at all Capita locations that are open to protect our colleagues and manage the risk of COVID-19. The welfare of our people is of paramount importance to us, and we’re doing everything we can to keep our colleagues and customers safe during this time.

Standard benefits

As well as competitive rates of pay, we offer a substantial benefits package which includes 25 days holiday (rising to 27), plus bank holidays, and the option to buy extra leave, a company-matched pension, life assurance, a cycle2work scheme and more.

Trustmarque is an award-winning IT partner that delivers IT solutions allowing our customers to work smarter and more effectively. We simplify business, through a flexible and cost-effective approach that empowers organisations and their people. Giving honest, simple, and independent advice we help our customers to navigate an increasingly complex world of IT – and that’s exactly what you’ll do too, if you join our talented team here.

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