1 to 25 of 29 Penetration Tester Jobs in London

OT Penetration Tester

Hiring Organisation
17918
Location
London, United Kingdom
Role: OT Penetration Tester Location: UK Wide (Hybrid Working & Client Travel) Salary: Competitive + Bonus + Excellent Benefits Package The Opportunity Join a leading technology and innovation consultancy helping clients solve some of their most complex cyber security challenges. As an IT/OT Penetration Tester … wide variety of projects, continuous learning opportunities and a clearly defined technical career path. What We Can Offer You as an OT Penetration Tester Work on a broad range of security testing engagements across multiple sectors Clear technical career progression without moving into management Dedicated training budget ...

Senior Penetration Tester

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Senior Penetration Tester LSEG is seeking a senior penetration tester to join our internal offensive security team. This role is hands‐on and deeply technical, responsible for planning and driving penetration tests across a wide range of systems and applications. The successful candidate will … skilled offensive security professional with a passion for uncovering vulnerabilities and improving security posture through thorough testing and teamwork. Key Responsibilities Conduct in‐depth penetration tests on applications, infrastructure, and cloud environments. Take full ownership of assigned penetration testing engagements end‐to‐end and deliver with limited oversight. ...

Penetration Tester

Hiring Organisation
Big Red Recruitment Midlands Limited
Location
London, United Kingdom
Employment Type
Permanent
seeking a Penetration Tester to join a growing Offensive Security team within a specialist cyber security consultancy. This is an exciting opportunity to join at a time of significant investment and growth, helping to strengthen existing testing services while contributing to the development of new capabilities across areas … such as Red Teaming, Operational Technology (OT), Threat-Led Security Testing and emerging technologies. The successful candidate will play a key role in delivering penetration testing engagements, supporting process improvement initiatives, and helping to build a scalable and mature testing function. This position offers excellent opportunities for professional development ...

Penetration Tester

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
## Penetration TesterApplylocations: London Office, United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: JR102006Darktrace is a global leader in AI-driven cybersecurity, helping organizations stay ahead of evolving threats every day. Darktrace was built on a genuinely differentiated idea: that Adaptive AI could detect and respond … curiosity to grow beyond them.Our Values: Own It | Win as One | Raise Our Bar | Move First. Learn Fast **Job D****escription****:**As a Penetration Tester within the internal cybersecurity team, you’ll play a key role in identifying and mitigating security risks across the organisation’s digital landscape. ...

Senior Penetration Tester

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
person. In Technology, we’re asking that you attend the office a minimum of 1 day per week. About the Role As an experienced Penetration Tester at Starling, you’ll be joining an established team, working with talented cyber security professionals to ensure our services are designed, developed … multiple areas of the business to understand requirements, conduct research, perform security testing, and report issues aligned to our risk framework. Being an internal tester, you’ll gain a strong understanding of how technology works at Starling to enable in-depth testing. You’ll also support remediation processes, seeing ...

Penetration Tester (CHECK Team Leader)

Hiring Organisation
17918
Location
London, United Kingdom
Role: Penetration Tester (CHECK Team Leader) Location: United Kingdom - Remote Salary: £70,000 - £75,000 Type: Permanent, Full-Time Summary: We're working with a growing UK cyber security consultancy delivering penetration testing services to government and public sector organisations. They're looking for a CHECK Team … Member ready to step into the role, to take on ownership across scoping, delivery, and quality. This is a great opportunity for an experienced tester with active SC clearance who wants to lead engagements and act as a technical point of contact for clients. Whether you're already ...

Senior Penetration Tester

Hiring Organisation
Starling Bank
Location
London, UK
collaborate in person. In Technology, we're asking that you attend the office a minimum of 1 day per week.About the RoleAs an experienced Penetration Tester at Starling, you’ll be joining an established team, working with talented cyber security professionals to ensure our services are designed, developed … with multiple areas of the business to understand requirements, conduct research, perform security testing, and report issues aligned to our risk framework.Being an internal tester, you’ll gain a strong understanding of how technology works at Starling to enable in-depth testing. You’ll also support remediation processes, seeing ...

Penetration Tester

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Experience) City London Province City of London Country United Kingdom Postal Code EC3M Job Description Job Description We are looking for a certified Penetration Tester to join our client’s cybersecurity team and helpsafeguard critical systems through simulated attacks and red team assessments.You’ll be responsible for identifying … exploits and security protocols, and a driveto continuously evolve with today’s fast-moving threat landscape. Job Responsibilities Plan,execute, and report on penetration tests across networks, webapplications, APIs, mobile, and cloud environments Conduct red team engagements , including simulated phishing, socialengineering, and physical security assessments Identify,document, and prioritise ...

Penetration Tester

Hiring Organisation
Claranet Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Essential Roles & Responsibilities As a Penetration Tester at Claranet, you will able to deliver you own web application tests and through training and partnering, you will be involved in a full range of testing work from mobile app and infrastructure testing to social engineering and Red Team exercises. … work in an independent manner as well as part of a team Excellent written and oral communications skills Positive, collaborative and enthusiastic Conducting penetration testing work out of normal office hours on occasion Willing to travel to deliver onsite work as required Appetite to shadow, train and develop ...

Penetration Tester

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
that supports how our engineering teams build and operate complex systems at scale. Take the next step in your career. Role As a Penetration Tester, you will lead and conduct penetration tests and vulnerability assessments across a wide range of internal systems and security controls. Your work … will directly strengthen our overall security posture through continuous testing, actionable insights and collaboration on remediation strategies. Responsibilities Perform in-depth penetration testing across a variety of technologies, including Kubernetes, Jenkins and Windows Domain Services. Deliver practical, impactful remediation advice to Control Owners based on identified vulnerabilities. Support business ...

Penetration Tester

Hiring Organisation
G Research
Location
London, UK
that supports how our engineering teams build and operate complex systems at scale.Take the next step in your career.The roleAs a Penetration Tester, you will lead and conduct penetration tests and vulnerability assessments across a wide range of internal systems and security controls. Your work will directly … strengthen our overall security posture through continuous testing, actionable insights and collaboration on remediation strategies. Key responsibilities of the role include:Performing in-depth penetration testing across a variety of technologies, including Kubernetes, Jenkins and Windows Domain ServicesDelivering practical, impactful remediation advice to Control Owners based on identified vulnerabilitiesSupporting ...

Trainee Penetration Tester Programme No Experience Required

Hiring Organisation
NEWTO TRAINING LIMITED
Location
North London, London, United Kingdom
Employment Type
Permanent
Salary
£45,000
Trainee Penetration Tester Programme No Experience Required *This is a self-funded career programme with a guaranteed job on completion or 100% of your course fees back* Train. Certify. Get Hired. Are you looking to start a career in Penetration Testing but don't know where ...

Trainee Penetration Tester Programme No Experience Required

Hiring Organisation
17918
Location
London, United Kingdom
Trainee Penetration Tester Programme No Experience Required This is a self-funded career programme with a guaranteed job on completion or 100% of your course fees back Train. Certify. Get Hired. Are you looking to start a career in Penetration Testing but don't know where ...

Senior Penetration Tester - Offensive Security Lead

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Hack The Box is looking for a Senior Penetration Tester to join their offensive security team in Greater London. This role involves conducting penetration tests on applications, infrastructure, and cloud environments. Key responsibilities include documenting findings, collaborating with teams, and contributing to improvements in testing methodologies. Candidates … should have proven experience in penetration testing, proficiency with security tools, and strong reporting skills. Relevant certifications and threat modeling experience are advantageous. #J-18808-Ljbffr ...

Lead Penetration Tester - Kubernetes & DevSecOps

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Research is seeking a hands-on Penetration Tester to lead tests and vulnerability assessments across internal systems and security controls. Your work will strengthen our security posture through continuous testing and remediation collaboration. You will perform tests across Kubernetes, Jenkins and Windows Domain Services, deliver remediation guidance, mentor ...

Senior Penetration Tester — Lead Offensive Security

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Bridewell is seeking an experienced Senior Penetration Tester to deliver testing engagements across infrastructure and web applications, with a focus on client-facing leadership. The role includes contributing to tenders, producing detailed reports, and advancing testing methodologies. You will join a diverse team with a strong emphasis ...

Penetration Tester – Remote/Hybrid, Certification Support

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
MastarRec is seeking a skilled Penetration Tester to join our cybersecurity client’s team in London. You will identify vulnerabilities across networks, applications, and cloud environments, delivering actionable insights to reduce risk exposure. Ideal candidates have deep offensive security experience, knowledge of exploits and security protocols ...

Penetration Tester - Web, Cloud & App Security (Hybrid)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Darktrace Ltd. seeks a Penetration Tester to identify security risks across the organisation's digital landscape. The role focuses on hands-on testing of web apps, networks, APIs, mobile apps and cloud environments, delivering actionable insights to security and development teams. The candidate will simulate real-world attacks ...

Senior Penetration Tester — FinTech Security & Cloud

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Starling Bank in the United Kingdom is seeking an experienced Penetration Tester to join our security team. You will work with cyber security professionals to ensure our services are designed, developed and operated securely, performing security testing across mobile, web, cloud and infrastructure. This role is collaborative ...

Senior Penetration Tester - FinTech Security Leader

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Starling Bank Limited is seeking an experienced Penetration Tester to join our security team in a hybrid role. You will conduct tests across mobile, web, cloud, and infrastructure, partner with engineering to secure development, and help remediation efforts to lift overall security posture. You will mentor colleagues ...

Hybrid Penetration Tester — Offensive Security

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Darktrace in London is seeking a hands-on Penetration Tester to identify security risks across the organisation's digital landscape. You will conduct tests on web applications, networks, APIs, mobile apps and cloud environments, and deliver actionable insights to security and development teams. You will produce detailed reports ...

Senior Penetration Tester - CTL

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Testerwith solid experience of infrastructureandwebapplicationtestingto delivertesting engagementson a range of key client work. This is an excellent opportunity for a highly motivated and determinedPenetration Tester to continue their development and work on a range of exciting projects.As well asdeliveringtesting,Bridewell ensures each consultant hasaccess toa dedicated annualteambudget forpersonaldevelopment. This … experience in a client-facing role. Customerorientedandable to communicate with all levels of an organisation withappropriate technicalcontent. Highly proficient in performing a variety of penetration tests such as infrastructure, web applicationAPItestingand device configuration reviews,etc. CRESTCertified Tester(CCT) or Cyber Scheme TeamLeader(CSTM)with infrastructure specialism- mandatory NCSC ...

IT/OT Penetration Tester

Hiring Organisation
PA Consulting
Location
London, UK
quality security assessments within agreed deadlinesProduce written and verbal reports for clients to an excellent standard.Develop and share knowledge with the rest of the penetration testing teamWork with teams across PA Consulting, providing technical knowledge and expertise where requiredBe self-motivated and client oriented, aiming to exceed expectations … other industry recognised certifications such as the OSCP or CREST/CyberScheme qualificationsHave 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 maritimeDesire to help build ...

Junior Ethical Hacker / Penetration Tester no experience needed

Hiring Organisation
NEWTO TRAINING LIMITED
Location
North London, London, United Kingdom
Employment Type
Permanent
Salary
£65,000
*This is a self-funded career programme with a guaranteed job on completion or 100% of your course fees back* Train. Certify. Get Hired. Are you looking to start a career in Cyber Security but ...

Junior Penetration Tester

Hiring Organisation
Newto Training
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£25,000 - £50,000 per annum
Kickstart Your Career in Ethical Hacking – With Guaranteed Job Opportunities Are you ready to break into one of the fastest-growing industries? Cyber professionals are in high demand worldwide, and Newto Training can help you ...