1 to 25 of 74 Penetration Testing Jobs in the South East

Penetration Testing Team Leader - Growing Cybersecurity Firm

Hiring Organisation
RecruitmentRevolution.com
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£95,000 per annum
Ready to take the next step in your penetration testing career and lead a high-performing team at a respected, fast-growing cybersecurity consultancy? This is your opportunity to join a CREST-certified organisation committed to excellence, innovation and integrity. As our new Penetration Testing Team … Leader , you’ll play a pivotal role in shaping cutting-edge testing services, developing talented testers, and helping protect clients across government, telecoms, finance, digital currencies and other critical sectors. With structured development, meaningful progression opportunities, and the chance to make a visible impact from day one, this ...

Offensive Security Tester

Hiring Organisation
NTT DATA
Location
Woking, Surrey, UK
Employment Type
Full-time
global leader in security services, is seeking a CREST-certified Offensive Security Tester to join its UK Security Practice. This role involves conducting advanced penetration testing engagements, identifying vulnerabilities across diverse IT environments, and providing actionable remediation guidance to enhance client security postures. The ideal candidate will have … considered for the position, candidates must be eligible for Security Check (SC) clearance. What you'll be doing: Key Responsibilities: Conduct comprehensive penetration tests across web applications, network infrastructure, and mobile applications. Perform external and internal network penetration testing using industry-standard methodologies. Execute wireless security assessments ...

Offensive Security Tester

Hiring Organisation
NTT DATA
Location
Slough, Berkshire, UK
Employment Type
Full-time
global leader in security services, is seeking a CREST-certified Offensive Security Tester to join its UK Security Practice. This role involves conducting advanced penetration testing engagements, identifying vulnerabilities across diverse IT environments, and providing actionable remediation guidance to enhance client security postures. The ideal candidate will have … considered for the position, candidates must be eligible for Security Check (SC) clearance. What you'll be doing: Key Responsibilities: Conduct comprehensive penetration tests across web applications, network infrastructure, and mobile applications. Perform external and internal network penetration testing using industry-standard methodologies. Execute wireless security assessments ...

Offensive Security Tester

Hiring Organisation
NTT DATA
Location
Oxford, Oxfordshire, UK
Employment Type
Full-time
global leader in security services, is seeking a CREST-certified Offensive Security Tester to join its UK Security Practice. This role involves conducting advanced penetration testing engagements, identifying vulnerabilities across diverse IT environments, and providing actionable remediation guidance to enhance client security postures. The ideal candidate will have … considered for the position, candidates must be eligible for Security Check (SC) clearance. What you'll be doing: Key Responsibilities: Conduct comprehensive penetration tests across web applications, network infrastructure, and mobile applications. Perform external and internal network penetration testing using industry-standard methodologies. Execute wireless security assessments ...

Offensive Security Tester

Hiring Organisation
NTT DATA
Location
Basingstoke, Hampshire, UK
Employment Type
Full-time
global leader in security services, is seeking a CREST-certified Offensive Security Tester to join its UK Security Practice. This role involves conducting advanced penetration testing engagements, identifying vulnerabilities across diverse IT environments, and providing actionable remediation guidance to enhance client security postures. The ideal candidate will have … considered for the position, candidates must be eligible for Security Check (SC) clearance. What you'll be doing: Key Responsibilities: Conduct comprehensive penetration tests across web applications, network infrastructure, and mobile applications. Perform external and internal network penetration testing using industry-standard methodologies. Execute wireless security assessments ...

Offensive Security Tester

Hiring Organisation
NTT DATA
Location
Maidstone, Kent, UK
Employment Type
Full-time
global leader in security services, is seeking a CREST-certified Offensive Security Tester to join its UK Security Practice. This role involves conducting advanced penetration testing engagements, identifying vulnerabilities across diverse IT environments, and providing actionable remediation guidance to enhance client security postures. The ideal candidate will have … considered for the position, candidates must be eligible for Security Check (SC) clearance. What you'll be doing: Key Responsibilities: Conduct comprehensive penetration tests across web applications, network infrastructure, and mobile applications. Perform external and internal network penetration testing using industry-standard methodologies. Execute wireless security assessments ...

Offensive Security Tester

Hiring Organisation
NTT DATA
Location
Newport, Isle of Wight, UK
Employment Type
Full-time
global leader in security services, is seeking a CREST-certified Offensive Security Tester to join its UK Security Practice. This role involves conducting advanced penetration testing engagements, identifying vulnerabilities across diverse IT environments, and providing actionable remediation guidance to enhance client security postures. The ideal candidate will have … considered for the position, candidates must be eligible for Security Check (SC) clearance. What you'll be doing: Key Responsibilities: Conduct comprehensive penetration tests across web applications, network infrastructure, and mobile applications. Perform external and internal network penetration testing using industry-standard methodologies. Execute wireless security assessments ...

Penetration Tester

Hiring Organisation
NSD
Location
Wokingham, Berkshire, South East, United Kingdom
Employment Type
Permanent
Salary
£420 - £470 per day
Penetration Tester CTM Level - Wokingham, UK Key Points Up to £470 per day, 7-month contract Hybrid model, 3 days onsite and 2 remote Seeking a Penetration Tester at CTM level with strong consultancy skills Active SC Clearance required About the Client Our client is a respected organisation … range of technical services that help strengthen critical digital operations. With growing demand across their security programmes, they are now searching for an experienced Penetration Tester to join their established team. The Benefits Exposure to varied testing engagements Collaborative and supportive technical environment Opportunity to deliver high impact ...

IT Security Auditor

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£500 - £700 per day
public cloud environments. Evaluate technical security controls (such as firewalls, IDS/IPS, security baselines, access controls) by directly interrogating systems, reviewing configurations, and testing controls. (Co-)Conduct vulnerability scans, penetration testing, and protocol analysis using approved tools to validate the efficacy of implemented security measures. Collaborate … real time, and supporting project delivery in a dynamic environment. Experience: Minimum 6 years' concrete, hands-on experience in technical IT audit, cyber security testing, penetration testing, or system security analysis. Strong background in technical audit execution within large, complex cloud and network environments. Experience directly configuring ...

Penetration Tester (OSCP)

Hiring Organisation
4Square Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £60,000 per annum
Penetration Tester (OSCP) Location: Remote Position Type: Full-time Reports to: Senior Penetration Tester About the Organisation A high-growth security consultancy working across government, space programmes, and FTSE 100 organisations is expanding its offensive security function. The team delivers complex, high-impact testing and simulation work … delivering cutting-edge work, this is an opportunity to develop quickly in a technically challenging environment. Role Overview We’re looking for a Penetration Tester/Red Team Consultant with 1–3 years’ experience who thrives on variety, problem-solving, and continuous learning. You’ll deliver offensive security assessments ...

Senior Penetration Tester

Hiring Organisation
Hamilton Barnes
Location
High Wycombe, Buckinghamshire, UK
Employment Type
Full-time
security team delivering cutting-edge work across 23 countries—with some client relationships spanning 20+ years. The Role You'll own a variety of testing engagements—from penetration testing to red-team style assignments—while acting as a trusted adviser to major medium and enterprise-scale organisations … opportunity to deliver meaningful impact every single day. What You'll Do • Engage directly with clients to shape and deliver high-quality testing services • Accurately scope engagements and support proposal development • Produce clear, actionable test reports that clients genuinely understand • Provide expert post-test guidance and support What ...

Senior Penetration Tester

Hiring Organisation
Hamilton Barnes
Location
Woking, Surrey, UK
Employment Type
Full-time
security team delivering cutting-edge work across 23 countries—with some client relationships spanning 20+ years. The Role You'll own a variety of testing engagements—from penetration testing to red-team style assignments—while acting as a trusted adviser to major medium and enterprise-scale organisations … opportunity to deliver meaningful impact every single day. What You'll Do • Engage directly with clients to shape and deliver high-quality testing services • Accurately scope engagements and support proposal development • Produce clear, actionable test reports that clients genuinely understand • Provide expert post-test guidance and support What ...

Senior Penetration Tester

Hiring Organisation
Hamilton Barnes
Location
Dartford, Kent, UK
Employment Type
Full-time
security team delivering cutting-edge work across 23 countries—with some client relationships spanning 20+ years. The Role You'll own a variety of testing engagements—from penetration testing to red-team style assignments—while acting as a trusted adviser to major medium and enterprise-scale organisations … opportunity to deliver meaningful impact every single day. What You'll Do • Engage directly with clients to shape and deliver high-quality testing services • Accurately scope engagements and support proposal development • Produce clear, actionable test reports that clients genuinely understand • Provide expert post-test guidance and support What ...

Senior Penetration Tester

Hiring Organisation
Hamilton Barnes
Location
Slough, Berkshire, UK
Employment Type
Full-time
security team delivering cutting-edge work across 23 countries—with some client relationships spanning 20+ years. The Role You'll own a variety of testing engagements—from penetration testing to red-team style assignments—while acting as a trusted adviser to major medium and enterprise-scale organisations … opportunity to deliver meaningful impact every single day. What You'll Do • Engage directly with clients to shape and deliver high-quality testing services • Accurately scope engagements and support proposal development • Produce clear, actionable test reports that clients genuinely understand • Provide expert post-test guidance and support What ...

Senior Penetration Tester

Hiring Organisation
Hamilton Barnes
Location
Basingstoke, Hampshire, UK
Employment Type
Full-time
security team delivering cutting-edge work across 23 countries—with some client relationships spanning 20+ years. The Role You'll own a variety of testing engagements—from penetration testing to red-team style assignments—while acting as a trusted adviser to major medium and enterprise-scale organisations … opportunity to deliver meaningful impact every single day. What You'll Do • Engage directly with clients to shape and deliver high-quality testing services • Accurately scope engagements and support proposal development • Produce clear, actionable test reports that clients genuinely understand • Provide expert post-test guidance and support What ...

Senior Penetration Tester

Hiring Organisation
Hamilton Barnes
Location
Reading, Berkshire, UK
Employment Type
Full-time
security team delivering cutting-edge work across 23 countries—with some client relationships spanning 20+ years. The Role You'll own a variety of testing engagements—from penetration testing to red-team style assignments—while acting as a trusted adviser to major medium and enterprise-scale organisations … opportunity to deliver meaningful impact every single day. What You'll Do • Engage directly with clients to shape and deliver high-quality testing services • Accurately scope engagements and support proposal development • Produce clear, actionable test reports that clients genuinely understand • Provide expert post-test guidance and support What ...

Senior Penetration Tester

Hiring Organisation
Hamilton Barnes
Location
Newport, Isle of Wight, UK
Employment Type
Full-time
security team delivering cutting-edge work across 23 countries—with some client relationships spanning 20+ years. The Role You'll own a variety of testing engagements—from penetration testing to red-team style assignments—while acting as a trusted adviser to major medium and enterprise-scale organisations … opportunity to deliver meaningful impact every single day. What You'll Do • Engage directly with clients to shape and deliver high-quality testing services • Accurately scope engagements and support proposal development • Produce clear, actionable test reports that clients genuinely understand • Provide expert post-test guidance and support What ...

Senior Penetration Tester

Hiring Organisation
Hamilton Barnes
Location
Brighton, East Sussex, UK
Employment Type
Full-time
security team delivering cutting-edge work across 23 countries—with some client relationships spanning 20+ years. The Role You'll own a variety of testing engagements—from penetration testing to red-team style assignments—while acting as a trusted adviser to major medium and enterprise-scale organisations … opportunity to deliver meaningful impact every single day. What You'll Do • Engage directly with clients to shape and deliver high-quality testing services • Accurately scope engagements and support proposal development • Produce clear, actionable test reports that clients genuinely understand • Provide expert post-test guidance and support What ...

Security Engineer

Hiring Organisation
Movement8
Location
South East, United Kingdom
Employment Type
Permanent
Security Engineer GCP, Cloud Security, Pen Testing- Hybrid (London) You will be joining a company that build software solutions fast to solve real problems within the workplace. The team builds tools that help engineering and product teams respond to incidents, reduce downtime, and continuously improve. Were looking … into designs Detect security weaknesses across API's, Applications and Infrastructure Driving secure development practices across the business Requirements: White-box and Black-box testing Penetration Testing Cloud Security in GCP Secure Software Development (Go, Typescript) Ability to conduct in-depth Security Research If you're interested ...

Lead Security Architect

Hiring Organisation
Aker Systems
Location
Portsmouth, Hampshire, UK
Employment Type
Full-time
OFFICIAL and above classifications. Provide specialist advice and knowledge of Public Cloud (Azure, AWS, GCP) cloud-based security architectures. Define and lead external security testing (e.g ITHC) of solutions on the public cloud (Azure, AWS, GCP), cloud native platforms (Docker, Kubernetes, etc.), and Software as a Service (SaaS) solutions. … Serverless architectures Implementing Information Security and Privacy Standards and Frameworks (e.g. ISO 27k, NIST800-53, CIS, GDPR) Leading security working groups and external security testing (ITHC, Penetration Testing, etc) of cloud solutions at high HMG classification levels (OFFICIAL required, SECRET desirable) or equivalent in other industries Designing ...

Lead Security Architect

Hiring Organisation
Aker Systems
Location
Maidstone, Kent, UK
Employment Type
Full-time
OFFICIAL and above classifications. Provide specialist advice and knowledge of Public Cloud (Azure, AWS, GCP) cloud-based security architectures. Define and lead external security testing (e.g ITHC) of solutions on the public cloud (Azure, AWS, GCP), cloud native platforms (Docker, Kubernetes, etc.), and Software as a Service (SaaS) solutions. … Serverless architectures Implementing Information Security and Privacy Standards and Frameworks (e.g. ISO 27k, NIST800-53, CIS, GDPR) Leading security working groups and external security testing (ITHC, Penetration Testing, etc) of cloud solutions at high HMG classification levels (OFFICIAL required, SECRET desirable) or equivalent in other industries Designing ...

Lead Security Architect

Hiring Organisation
Aker Systems
Location
High Wycombe, Buckinghamshire, UK
Employment Type
Full-time
OFFICIAL and above classifications. Provide specialist advice and knowledge of Public Cloud (Azure, AWS, GCP) cloud-based security architectures. Define and lead external security testing (e.g ITHC) of solutions on the public cloud (Azure, AWS, GCP), cloud native platforms (Docker, Kubernetes, etc.), and Software as a Service (SaaS) solutions. … Serverless architectures Implementing Information Security and Privacy Standards and Frameworks (e.g. ISO 27k, NIST800-53, CIS, GDPR) Leading security working groups and external security testing (ITHC, Penetration Testing, etc) of cloud solutions at high HMG classification levels (OFFICIAL required, SECRET desirable) or equivalent in other industries Designing ...

Lead Security Architect

Hiring Organisation
Aker Systems
Location
Guildford, Surrey, UK
Employment Type
Full-time
OFFICIAL and above classifications. Provide specialist advice and knowledge of Public Cloud (Azure, AWS, GCP) cloud-based security architectures. Define and lead external security testing (e.g ITHC) of solutions on the public cloud (Azure, AWS, GCP), cloud native platforms (Docker, Kubernetes, etc.), and Software as a Service (SaaS) solutions. … Serverless architectures Implementing Information Security and Privacy Standards and Frameworks (e.g. ISO 27k, NIST800-53, CIS, GDPR) Leading security working groups and external security testing (ITHC, Penetration Testing, etc) of cloud solutions at high HMG classification levels (OFFICIAL required, SECRET desirable) or equivalent in other industries Designing ...

Lead Security Architect

Hiring Organisation
Aker Systems
Location
Woking, Surrey, UK
Employment Type
Full-time
OFFICIAL and above classifications. Provide specialist advice and knowledge of Public Cloud (Azure, AWS, GCP) cloud-based security architectures. Define and lead external security testing (e.g ITHC) of solutions on the public cloud (Azure, AWS, GCP), cloud native platforms (Docker, Kubernetes, etc.), and Software as a Service (SaaS) solutions. … Serverless architectures Implementing Information Security and Privacy Standards and Frameworks (e.g. ISO 27k, NIST800-53, CIS, GDPR) Leading security working groups and external security testing (ITHC, Penetration Testing, etc) of cloud solutions at high HMG classification levels (OFFICIAL required, SECRET desirable) or equivalent in other industries Designing ...

Lead Security Architect

Hiring Organisation
Aker Systems
Location
Dartford, Kent, UK
Employment Type
Full-time
OFFICIAL and above classifications. Provide specialist advice and knowledge of Public Cloud (Azure, AWS, GCP) cloud-based security architectures. Define and lead external security testing (e.g ITHC) of solutions on the public cloud (Azure, AWS, GCP), cloud native platforms (Docker, Kubernetes, etc.), and Software as a Service (SaaS) solutions. … Serverless architectures Implementing Information Security and Privacy Standards and Frameworks (e.g. ISO 27k, NIST800-53, CIS, GDPR) Leading security working groups and external security testing (ITHC, Penetration Testing, etc) of cloud solutions at high HMG classification levels (OFFICIAL required, SECRET desirable) or equivalent in other industries Designing ...