Penetration Tester

3 weeks ago

London, United Kingdom Strativ Group Full time

Remote opportunity for Junior or Graduate Pen Testers

We’re working with an innovative cybersecurity company reshaping how businesses secure their assets. They offer a complete, software-driven security solution designed for SMEs and enterprises, combining expert knowledge with cutting-edge technology for proactive, end-to-end protection

Your Role:

As a Penetration Tester, you’ll have access to a wide range of engagements across industries, testing everything from web applications to IoT devices, networks, and cloud infrastructure. Your work will uncover vulnerabilities and demonstrate real-world exploitation scenarios for clients while helping improve their overall security posture.

  • Conduct in-depth assessments, from reconnaissance to exploitation and post-exploitation, for diverse clients.
  • Develop creative, custom testing strategies for unique client environments.
  • Collaborate directly with the development team to enhance our in-house tools and create automated solutions for recurring vulnerabilities.
  • Publish and responsibly disclose significant findings that push the boundaries of security research.

Key Responsibilities

  • Perform full-scope penetration testing, including external/internal network, web applications, mobile, IoT, and cloud platforms.
  • Collaborate with clients to triage findings and recommend actionable remediation steps.
  • Identify and exploit vulnerabilities using manual techniques and advanced tools.
  • Develop and refine attack simulations to test defences against the latest threats.
  • Work with internal teams to integrate findings into automated detection algorithms.
  • Stay ahead of the curve by researching emerging threats, tools, and techniques.

Experience required:

  • Experience : Graduate or junior cyber experts with a passion for penetration testing.
  • Knowledge : Understanding of operating systems, networking, and security protocols.
  • Mindset : Passion for problem-solving, learning new concepts, and adapting to dynamic challenges.
  • Certifications (a plus) : OSCP, eCPPT, CEH, or similar.

  • Penetration Tester

    6 months ago

    London, United Kingdom Applause IT Full time

    **Penetration Tester - Cyber Security Consultancy - Red Team, Nmap, Burpsuite** **London - Hybrid - £55,000** Applause IT are looking for a penetration tester to join a Cyber Security Consultancy based in London. The organisation offers services in Risk Management, Security Testing and GRC Services with their clients based all around the UK and...

  • Penetration Tester

    6 months ago

    London, United Kingdom Remarkable Jobs Full time

    **Penetration Tester** **Salary: £65k - £80k - depending on experience + benefits** **Location: Central London/Hybrid working** **Full Time/Permanent** Remarkable Jobs are recruiting on behalf of an innovative, forward thinking 'Information & Risk Management' company based in Central London and due to fantastic growth and further opportunities they now...

  • Penetration Tester

    3 weeks ago

    London, United Kingdom Harnham Full time

    Role: Penetration TesterContract Type: 3-Month Rolling Contract (with potential for permanent transition)IR35 Status: Inside IR35Location: Remote (with occasional travel to Central London)About the RoleJoin a leading retail client as they bring their penetration testing services in-house. This exciting opportunity is ideal for a junior penetration tester...

  • Penetration Tester

    3 weeks ago

    London, United Kingdom Harnham Full time

    Role: Penetration TesterContract Type: 3-Month Rolling Contract (with potential for permanent transition)IR35 Status: Inside IR35Location: Remote (with occasional travel to Central London)About the RoleJoin a leading retail client as they bring their penetration testing services in-house. This exciting opportunity is ideal for a junior penetration tester...

  • Penetration Tester

    3 weeks ago

    London, United Kingdom Harnham Full time

    Role: Penetration Tester Contract Type: 3-Month Rolling Contract (with potential for permanent transition) IR35 Status: Inside IR35 Location: Remote (with occasional travel to Central London) About the Role Join a leading retail client as they bring their penetration testing services in-house. This exciting opportunity is ideal for a junior...

  • Penetration Tester

    4 weeks ago

    London, United Kingdom Harnham Full time

    Role: Penetration Tester Contract Type: 3-Month Rolling Contract (with potential for permanent transition) IR35 Status: Inside IR35 Location: Remote (with occasional travel to Central London) About the Role Join a leading retail client as they bring their penetration testing services in-house. This exciting opportunity is ideal for a junior...

  • Penetration Tester

    3 weeks ago

    London, United Kingdom Harnham Full time

    Role: Penetration TesterContract Type: 3-Month Rolling Contract (with potential for permanent transition)IR35 Status: Inside IR35Location: Remote (with occasional travel to Central London)About the RoleJoin a leading retail client as they bring their penetration testing services in-house. This exciting opportunity is ideal for a junior penetration tester...

  • Penetration Tester

    3 weeks ago

    London, United Kingdom Harnham Full time

    Role: Penetration TesterContract Type: 3-Month Rolling Contract (with potential for permanent transition)IR35 Status: Inside IR35Location: Remote (with occasional travel to Central London)About the RoleJoin a leading retail client as they bring their penetration testing services in-house. This exciting opportunity is ideal for a junior penetration tester...

  • Penetration Tester

    3 weeks ago

    London, United Kingdom Harnham Full time

    Role: Penetration Tester Contract Type: 3-Month Rolling Contract (with potential for permanent transition) IR35 Status: Inside IR35 Location: Remote (with occasional travel to Central London) About the Role Join a leading retail client as they bring their penetration testing services in-house. This exciting opportunity is ideal for a junior...

  • Penetration Tester

    2 weeks ago

    London, UK, UK, United Kingdom Harnham Full time

    Role: Penetration TesterContract Type: 3-Month Rolling Contract (with potential for permanent transition)IR35 Status: Inside IR35Location: Remote (with occasional travel to Central London)About the RoleJoin a leading retail client as they bring their penetration testing services in-house. This exciting opportunity is ideal for a junior penetration tester...

  • Penetration Tester

    6 months ago

    London, United Kingdom ZDL Group Full time

    **Penetration Tester** **Location: Any in United Kingdom** **Salary - Negotiable dependant on** **experience + **Bonus and benefits **Full Time - Permanent Role **Penetration Tester** **Based in London The ZDL Group is looking for a new generation of penetration testers to join our rapidly growing team. Whether a seasoned professional or at the...

  • Senior Penetration Tester

    3 days ago

    London, Greater London, United Kingdom Hyerhub (formerly Hubbado) Full time

    Hyerhub (formerly Hubbado) is seeking a highly skilled Senior Penetration Tester to join our Cyber Defence (CDS) Team. As a Senior Penetration Tester, you will be responsible for leading teams of talented testers and conducting client-facing technical assurance and penetration testing.We offer a competitive salary of £70,000 - £100,000 per annum, depending...

  • Penetration Tester UK

    4 days ago

    London, Greater London, United Kingdom Hack The Box Full time

    Job Title: Penetration Tester UKLocation: London, United KingdomSalary: £60,000 - £80,000 per annumJob Description: We are seeking a skilled penetration tester to join our team in London. As a penetration tester, you will be responsible for delivering security testing services to some of the biggest names in the industry.You will have the opportunity to...

  • Penetration Tester

    6 months ago

    London, United Kingdom F5 Full time

    Penetration Tester - Range of seniority levels - £40K-£130K We’re working with several NCSC suppliers to assist them build out their Penetration test teams and looking to engage with testers from mixed backgrounds and abilities. Ideally you’ll have experience across both blue and red teams, however if you are early in your career we also have roles...

  • Penetration Tester Expert

    3 days ago

    London, Greater London, United Kingdom Locke and McCloud Full time £45,000 - £60,000

    Job Title: Penetration Tester ExpertA leading cyber security consultancy is looking for an experienced Penetration Tester to join their team. As a penetration tester, you will play a key role in supporting clients with various types of testing, including Web App, Infrastructure, API, and mobile.The ideal candidate will have 2+ years of experience in...

  • Penetration Tester

    4 weeks ago

    London, United Kingdom First Point Group Full time

    Penetration Tester - Application Security Location: London (On-Site) Contract Type: Permanent Join a Leading Cybersecurity Company! Are you passionate about application security? Our client, a top cybersecurity firm, is looking for a number of skilled Penetration Testers to join their team in London. This is your chance to make a significant impact by...

  • Penetration Tester

    3 weeks ago

    London, United Kingdom First Point Group Full time

    Penetration Tester - Application Security Location: London (On-Site) Contract Type: Permanent Join a Leading Cybersecurity Company! Are you passionate about application security? Our client, a top cybersecurity firm, is looking for a number of skilled Penetration Testers to join their team in London. This is your chance to make a significant impact by...

  • Penetration Tester

    1 month ago

    London, United Kingdom First Point Group Full time

    Penetration Tester - Application Security Location: London (On-Site) Contract Type: Permanent Join a Leading Cybersecurity Company! Are you passionate about application security? Our client, a top cybersecurity firm, is looking for a number of skilled Penetration Testers to join their team in London. This is your chance to make a significant...

  • Penetration Tester

    1 month ago

    London, United Kingdom First Point Group Full time

    Penetration Tester - Application SecurityLocation: London (On-Site)Contract Type: PermanentJoin a Leading Cybersecurity Company!Are you passionate about application security? Our client, a top cybersecurity firm, is looking for a number of skilled Penetration Testers to join their team in London. This is your chance to make a significant impact by securing...

  • Penetration Tester

    3 weeks ago

    London, United Kingdom CV-Library Full time

    We're currently working with a well-established Consultancy who are looking for a Penetration Tester - CTM to add to their heavily experienced team of specialists. You will be given the opportunity to deliver on a wide variety of testing engagements with business across multiple industries. You will perform and support the main activities of my...