Penetration Tester

  • United Kingdom
  • Manchester
​This position is responsible for performing all forms of complex technical security assessments of clients’ information technology systems.
Scroll to content

Orange Cyberdefense is Europe's leading cyber security services and solutions provider, and we are currently looking for a Penetration Tester to join our UK team.

This position is responsible for performing all forms of complex technical security assessments of clients’ information technology systems (including Internet, Intranet, Applications, Hosts, Firewalls, Mobile applications etc.) and related policies and procedures. 

These assessments are conducted on a by-project basis, ranging between one and three weeks per project, and will occasionally be done at the client site in the United Kingdom as and when required. This role is also required to conduct on-going research in the IT security arena and regularly assist in the sales process.

Your key responsibilities as a Penetration Tester will include to:

  • Perform security reviews of architecture and application designs, as well as application source code reviews
  • Perform mobile, complex application, infrastructure, as well as social engineering assessments and penetration testing
  • Assist with improvements for Orange Cyberdefense security services, including the continuous enhancement of existing methodology and reporting formats, as well as training collateral
  • Demonstrate the ability to be an industry expert
  • Exploit vulnerabilities to gain access, and expand access to remote systems 
  • Document technical issues identified during security assessments
  • Assist with building, hardening, and maintaining systems used for penetration testing
  • Research cutting edge security topics and new attack vectors 
  • Communication of findings/innovations internally, to colleagues
  • Represent Orange Cyberdefense at international events, forums or training events
  • Mentor team members

To join us as a Penetration Tester, you will need the following skills and experience:

  • CHECK Team Leader or equivalent as well as an industry leading qualification such as OSCP, CREST, OSCE or OSWP
  • You must have solid experience as a web app/infrastructure penetration tester and be able to conduct these indepently
  • You will have industry experience working in development or source code review in C/C++, C#. VB/NET, ASP, PHP, Java, Python or Ruby
  • You will have strong Unix, Windows and network security skills
  • You must have excellent communication skills - both written and verbal
  • You must have manual penetration testing experience above and beyond running automated tools
  • You will need experience in developing custom scripts or tools used for vulnerability scanning and identification
  • You will have report writing experience and be confident in presenting to clients
  • You will ideally have a broad understanding of hosting/cloud environments, SIEM technologies and security auditing tools

By joining one of the world’s leading cyber security companies as a Penetration Tester, you will be offered the following:

  • An opportunity to join a forward-thinking company and a role that allows for a deeper understanding of the industry
  • Competitive salary
  • Holiday allowance
  • A supportive work environment, working alongside industry experts
  • Research and personal development time
  • Private medical healthcare
  • Health cash plan 
  • Company pension
  • Life insurance
  • A free annual eye test
  • Company events several times per year
  • Cycle to work scheme
  • Perkbox incentives
  • A free birthday gift!

Please send your CV now for immediate consideration.


Additional information

  • Remote status

    Fully remote


London, Maidstone, Reading, United Kingdom and Manchester
We usually respond within a week

Or, know someone who would be a perfect fit? Let them know!

Waterloo Road
SE1 London Directions +44 207 078 1360


Hermitage Court
ME16 Maidstone Directions +44 1622 723 456


450 Brook Dr
RG2 6UU Reading Directions +44 118 334 0316

United Kingdom

United Kingdom
GY1 2JT United Kingdom Directions


3 Hardman Square
M3 Manchester Directions +44 161 457 0136

Why work for us?

  • Reputable Brand

    With over 25 years in the industry, we are experts in what we do. We have an international presence and yet local teams on hand to assist our customers.

  • Career Opportunities

    We work in an ever growing, ever changing industry... who knows where a role within Orange Cyberdefense, could take you in the future? We are a rapidly growing organisation meaning that new opportunities are being created all the time!

  • Unrivalled Training

    We provide an outstanding amount of training to both our technical and non-technical employees. How do you think we
    ended up being so good at what we do! We have our very own training suite set up in our HQ, enabling vendors to provide
    ongoing training to upskill our team.

  • Excellent Benefits

    We value the time, energy and effort that our employees put into their work every single day and ensure that they are compensated with an outstanding benefits package including a company
    pension, life insurance, private health insurance, discounted gym membership and more!

  • Rewards and incentives

    We believe in rewarding our people when they make an outstanding contribution to the success of the company. We have
    various internal incentives which could see you on an all-expenses paid trip to Las Vegas or even a £1,000 tax free bonus!

  • Team Days

    We spend more time at work than we do at home and recognise the importance of having time to socialise and get to know one another!


Applicant tracking system by Teamtailor