1 to 25 of 41 Security Tester Jobs

Security Tester, Oracle Cloud Infrastructure – London, UK Up to £1,000 per day, depending on experience 12-month contract engagement London, hybrid working with 4 to 5 days per week onsite Active eDV clearance required ABOUT THE CLIENT Our client is a major technology and consulting organisation delivering … high-profile cloud transformation programme within a secure environment. They are looking for an experienced Security Tester to strengthen security assurance across Oracle Cloud Infrastructure, architecture, networks and access controls. THE BENEFITS Work on a complex, high-profile cloud programme Collaborate with experienced architecture, engineering and security ...

Security Tester, Oracle Cloud Infrastructure – London, UK Up to £1,000 per day, depending on experience 12-month contract engagement London, hybrid working with 4 to 5 days per week onsite Active eDV clearance required ABOUT THE CLIENT Our client is a major technology and consulting organisation delivering … high-profile cloud transformation programme within a secure environment. They are looking for an experienced Security Tester to strengthen security assurance across Oracle Cloud Infrastructure, architecture, networks and access controls. THE BENEFITS Work on a complex, high-profile cloud programme Collaborate with experienced architecture, engineering and security ...

Security Tester, Oracle Cloud Infrastructure – London, UK Up to £1,000 per day, depending on experience 12-month contract engagement London, hybrid working with 4 to 5 days per week onsite Active eDV clearance required ABOUT THE CLIENT Our client is a major technology and consulting organisation delivering … high-profile cloud transformation programme within a secure environment. They are looking for an experienced Security Tester to strengthen security assurance across Oracle Cloud Infrastructure, architecture, networks and access controls. THE BENEFITS Work on a complex, high-profile cloud programme Collaborate with experienced architecture, engineering and security ...

Security Tester | Contract (12 months+) | SC Clearance Required (Active/Lapsed) | Inside IR35 Location: Remote-first, UK Contract: Initial 12 months (potential to extend) Clearance: SC Clearance Required (Active/Lapsed) We are looking for an experienced Security Tester to support a major programme within … complex and highly regulated environment. The successful consultant will bring strong hands-on security testing experience, with the ability to identify vulnerabilities, assess security controls and work closely with technical teams to ensure applications and systems meet required security standards. You will work alongside engineering, development ...

Security Tester | Contract (12 months+) | SC Clearance Required (Active/Lapsed) | Inside IR35 Location: Remote-first, UK Contract: Initial 12 months (potential to extend) Clearance: SC Clearance Required (Active/Lapsed) We are looking for an experienced Security Tester to support a major programme within … complex and highly regulated environment. The successful consultant will bring strong hands-on security testing experience, with the ability to identify vulnerabilities, assess security controls and work closely with technical teams to ensure applications and systems meet required security standards. You will work alongside engineering, development ...

Cyber Security Controls Tester Location: Fully Remote Contract Length: 6 Months Day Rate: Circa £550 per day (Outside IR35) Security Clearance: Active SC Clearance required (must be current and verifiable) About the Role An established MSSP is seeking an experienced Cyber Security Controls Tester to support a large-scale security assurance programme. This is an excellent opportunity for a security professional with a strong controls testing, audit, risk, or assurance background to assess the effectiveness of security controls across complex environments. Working closely with security architects, risk teams ...

Location: Fully Remote (UK) Contract Type: Contract Contract Length: Immediate start until February 2027 Security Clearance: Active SC Clearance required and must be verifiable About the Opportunity We are seeking an experienced Cyber Security Controls Tester to support a large-scale security assurance programme within … highly regulated environment. This is an excellent opportunity for a contractor with a strong background in security controls testing, assurance and risk management, particularly within central government or wider public sector environments. Working remotely alongside security architects, risk teams and technical stakeholders, you will provide independent assurance over ...

Mission At CovertSwarm, we're redefining offensive security through constant, relentless attack. As a Senior Hive Member, you'll lead sophisticated operations that push beyond traditional boundaries, mentoring fellow operators while discovering new attack vectors that others miss. The Opportunity This isn't just another testing role. … unknown vulnerabilities. You'll lead complex operations, mentor rising talent, and help shape the future of offensive security. The Arsenal (Core Responsibilities) Perform specialized security assessments across multiple domains Guide clients through complex security challenges, from technical teams to C-suite executives Mentor and elevate fellow Hive members ...

Searchability NS&D is seeking a Security Tester to deliver security test strategies for Oracle Cloud Infrastructure in a London hybrid environment. The role focuses on cloud infrastructure, networks, IAM, and RBAC, with a requirement for active eDV clearance. You will work with architects, engineers and security ...

Security Penetration Tester , you will be responsible for supporting the design, implementation, and maintenance of TVM (Threat & Vulnerability Management) solutions, controls and processes across the organisation. You will be liaising with Digital teams to ensure appropriate mitigation and remediation of vulnerabilities detected across our IT estate. This role … collaborate effectively with cross-functional teams. The ideal candidate will possess strong communication and will be committed to ensuring the highest level of security, compliance, and user experience. Security Clearance: CTC (Counter Terrorist Check) clearance is essential. You must currently hold or be able to attain CTC clearance ...

WeDoTech is seeking an experienced Security Tester for a 12-month contract. The role is remote-first within the UK, focusing on hands-on security testing across applications and APIs to ensure security standards and regulatory requirements are met. You will work with engineering and testing ...

Searchability NS&D is seeking a Security Tester to join a London-based cloud security programme focused on Oracle Cloud Infrastructure. The role is a 12-month contract with a daily rate up to £1,000, hybrid working with 4–5 days onsite. You will design … execute security tests across OCI, networks, IAM and RBAC, review designs, report risks and drive remediation in collaboration with architecture and security teams, with current eDV clearance required. #J-18808-Ljbffr ...

Moore Kingston Smith is seeking an experienced Cyber Security Consultant specialising in penetration testing to join our client-facing advisory team. You will join an NCSC-recognised cyber security team within our Risk Advisory practice, supporting a diverse portfolio of clients across multiple sectors. This is a hands … delivering penetration tests across web applications, APIs, and internal and external network infrastructure. You will also support Cyber Essentials Plus assessments and wider technical security reviews, including vulnerability assessments, configuration reviews against recognised benchmarks, and cloud security reviews. You will identify and safely validate security weaknesses, explain ...

Lisbon area , designed for productive and enjoyable workdays. Your tasks Conduct penetration tests in web, Windows, cloud or AI environments Use and maintain our security scanning and attack surface monitoring solutions Identify, analyze, and exploit security vulnerabilities across internal and external systems Simulate real-world attack scenarios … assess the effectiveness of existing security measures Document findings and provide clear, actionable remediation recommendations Collaborate with IT and development teams to improve overall security posture Stay up to date with the latest threats, vulnerabilities, and attack techniques, including emerging trends in AI-driven security Automated scanning ...

Penetration Tester - Cloud Security, Active Directory, APIs Market Rate (Inside IR35) 6 Months initially Hybrid in London A client of mine is looking for a hands-on Penetration Tester to support their cybersecurity function, with some responsibilities across security operations and incident response. The right candidate … have experience conducting infrastructure, Web Application, API, Cloud and Active Directory penetration tests within complex environments. Key Requirements: Proven commercial experience as a Penetration Tester, within a large enterprise environment. Strong hands-on Penetration Testing experience across Web Applications, APIs, infrastructure, Active Directory and cloud environments. Proven experience conducting ...

cybersecurity services provider is seeking a Penetration Tester to conduct security assessments across various clients. The role offers flexibility to work remotely or from the Sheffield office, and the ideal candidate will have 2-4 years of experience, a CREST certification, and strong communication skills. You'll help ...

hackajob is partnering directly with NEXT to hire for this role. The role Our Information Security team is at the heart of protecting a global retail and eCommerce business. With over 15,000 IT users and a digital reach spanning 60 countries, we work to keep our systems, colleagues … customers safe every day. We are looking for a Security Pen Tester to join our proactive line of defence. In this role, you will think like an attacker to find vulnerabilities before they can be exploited, providing the clear guidance our Technology teams need to stay secure. Whether ...

hackajob is partnering directly with NEXT to hire for this role. The role Our Information Security team is at the heart of protecting a global retail and eCommerce business. With over 15,000 IT users and a digital reach spanning 60 countries, we work to keep our systems, colleagues … customers safe every day. We are looking for a Security Pen Tester to join our proactive line of defence. In this role, you will think like an attacker to find vulnerabilities before they can be exploited, providing the clear guidance our Technology teams need to stay secure. Whether ...

hackajob is partnering directly with NEXT to hire for this role. The role Our Information Security team is at the heart of protecting a global retail and eCommerce business. With over 15,000 IT users and a digital reach spanning 60 countries, we work to keep our systems, colleagues … customers safe every day. We are looking for a Security Pen Tester to join our proactive line of defence. In this role, you will think like an attacker to find vulnerabilities before they can be exploited, providing the clear guidance our Technology teams need to stay secure. Whether ...

MWEK Solutions DMCC in Berkshire is seeking an AI Security Tester to simulate real-world attacks on AI/ML systems, stress-test model guardrails, and protect data privacy. Hybrid role with occasional onsite travel; permanent position up to £60K. You will identify vulnerabilities, document findings, and collaborate … with security teams to harden deployments. The ideal candidate has 5+ years in offensive cybersecurity and at least 2 years focused on AI/ML security, with strong Python/Java and ML #J-18808-Ljbffr ...

Citation Cyber is seeking a Security Consultant (Penetration Testing) to join our hybrid-UK team. You'll deliver security assessments across client environments, report findings clearly and help clients remediate vulnerabilities. As a CHECK/CREST-enabled provider, you’ll work on infrastructure and web app testing, cloud … security reviews, and contribute to ongoing tooling and knowledge sharing while developing towards CHECK roles. #J-18808-Ljbffr ...

Citation Cyber is seeking a Security Consultant (Penetration Testing) to join our growing team. You will deliver a wide range of technical security assessments across client environments, identifying vulnerabilities and advising on remediation. The role covers infrastructure and web application testing, cloud security assessments, and clear, high ...

Cyberfort is seeking an experienced Cyber Security Controls Tester to support a large-scale security assurance programme within a highly regulated environment. You will evaluate the effectiveness of security controls, test against ISO 27001, NIST CSF and NIST 800-53, review policies and configurations, and produce ...

Citation Cyber is a UK-based cyber security consultancy delivering penetration testing, training and managed services. We seek a Security Consultant to join our penetration testing team, delivering assessments across client environments and helping strengthen cyber resilience. You will produce high-quality reports, present findings to clients ...

Sanderson Government & Defence is seeking a Cyber Security Controls Tester to support a large-scale security assurance programme. The role is fully remote in the UK with an initial 6-month contract and a day rate of around £550 (Outside IR35). Active SC clearance is required … will work with security architects, risk teams and stakeholders to evaluate controls against ISO 27001, NIST CSF, NIST 800-53, and CIS Controls. #J-18808-Ljbffr ...