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IT​/OT Penetration Tester

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: PA Consulting
Part Time position
Listed on 2026-09-18
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, IT Support
Salary/Wage Range or Industry Benchmark: 60000 - 80000 GBP Yearly GBP 60000.00 80000.00 YEAR
Job Description & How to Apply Below

Overview

We believe in the power of ingenuity to build a positive human future. We challenge where it matters and own the outcome. We combine strategic thinking, customer-centric service design, and agile engineering practices to accelerate innovation in a tech-driven world.

Why consider joining our Digital & Data community?

  • Join our Digital & Data team working alongside product, design and a wide range of other experts and cross-disciplinary teams to bring ideas to life through innovative software solutions.
  • Grow a flexible and unique career within a trust-based, inclusive environment that values excellence, innovation, and curiosity. You have the option to progress with us on a technical career track. No need to go onto the Partner career track if this doesn’t align with what you want to do.
  • Hybrid working - our approach is to be in the office or on client site a minimum of 2 days per week.
  • Work on a broad variety of projects and tech stacks for clients across seven sectors - no project is ever the same
  • Join other experts within our supportive and collaborative tech community through knowledge-sharing and peer-level support, coaching and mentoring
  • Deepen your expertise through our culture of learning and growth – you’ll have budget to take courses (technical and non-technical training), plus gain certifications

What you can expect

  • Work to agile best practices and cross-functionally with multiple teams and stakeholders. You’ll be using your technical skills to problem solve with our clients, as well as working on internal projects
  • Live in-person whiteboarding sessions to problem solve as a team, alongside asynchronous communication on Teams
  • Work by yourself, or play your part in larger projects
  • Deliver high quality security assessments within agreed deadlines
  • Produce written and verbal reports for clients to an excellent standard.
  • Develop and share knowledge with the rest of the penetration testing team
  • Work with teams across PA Consulting, providing technical knowledge and expertise where required
  • Be self-motivated and client oriented, aiming to exceed expectations in all areas of your role
  • Hybrid working with the team on client site or in our office a minimum of two days per week. However, the actual time you spend and where you spend it will vary by role or assignment, including up to 5 days per week on a client site.
  • An environment that deeply cares about its values

Essential requirements

Even if you don’t meet every requirement below, feel free to still apply as we are often hiring for similar roles which your background might be better suited to.

  • Hold CTM/CSTM or CTL/CSTL status and/or other industry recognised certifications such as the OSCP or CREST/Cyber Scheme qualifications
  • Have developed their SME knowledge in one or more fields of penetration testing, such as mobile application testing, Cloud, Operational Technology, or a specific industry/environment such as telecoms, defence, or maritime
  • Desire to help build and maintain the team though internal training, building our infrastructure and tooling or helping to plan and execute engagements
  • Be interested in delivering and contributing to our CREST accredited ethical hacking training.
  • You thrive in problem-solving and analytical thinking
  • You enjoy collaborating with multiple stakeholders in a fast-paced environment

Additional Information

Assessment process

Please note that the interview stages may be subject to change based on the specific requirements of the role.

  • Quick call with one of our Tech Recruiters – to discuss your application, the role and PA
  • Round 1:
    Either a competency or technical interview (60 mins)
  • Round 2:
    Either a competency or technical interview, whichever you didn’t do at first round (60 mins)
  • Final round :
    Meeting with a PA leader…
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