13 of 13 Security Tester Jobs

Offensive Security Tester (Red Team) London/WFH to £70k Opportunity to progress your career as an Offensive Security Tester at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; you'll be working on Greenfield projects, collaborating with and learning from a hugely talented team. Your … role: As an Offensive Security Tester you will manage client engagements, perform security tests and report findings; you'll be using industry standard combined with in-house developed tools as well as carrying out manual reviews to discover any issues with customer infrastructure and web applications. You'll be pro-active and will have the opportunity within … Russel Group or top tier world university - Computer Science, Engineering, Physics or Mathematics; MSc or PhD advantageous You're OSCP or CRT certified You have commercial experience with Offensive Security, Red Team testing or Penetration testing You have a keen interest in Cyber Security and understanding of key concepts and protocols You can code with any OO programming More ❯

Offensive Security Tester (Red Team) London/WFH to £70k Opportunity to progress your career as an Offensive Security Tester at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; you'll be working on Greenfield projects, collaborating with and learning from a hugely talented team. Your … role: As an Offensive Security Tester you will manage client engagements, perform security tests and report findings; you'll be using industry standard combined with in-house developed tools as well as carrying out manual reviews to discover any issues with customer infrastructure and web applications. You'll be pro-active and will have the opportunity within … Russel Group or top tier world university - Computer Science, Engineering, Physics or Mathematics; MSc or PhD advantageous You're OSCP or CRT certified You have commercial experience with Offensive Security, Red Team testing or Penetration testing You have a keen interest in Cyber Security and understanding of key concepts and protocols You can code with any OO programming More ❯

Security Tester - Onsite in Leeds on Tuesday & Thursday and home based on the other days £350-£400 per day (inside IR35) - 9 months+ All applicants must hold an active SC clearance. My client is a global leading IT consultancy. They are on the hunt for an SC Cleared Security Tester to join the current test team. … Key Duties and Responsibilities Strong capability to identify security gaps across systems and processes. Experience creating and applying risk models. Ability to develop and execute a comprehensive cyber security test strategy. Strong understanding of Azure security risks, especially related to Azure Storage. Knowledge of immutable backups and secure data retention strategies. Experience with disaster recovery planning, including … full restore testing. Expertise in multi-factor authentication (MFA) setup and testing. Vulnerability management - scanning, prioritisation, remediation validation. Ability to design and interpret security dashboards for monitoring and reporting Awareness of system throttling and its security implications. Ideally comfortable upskilling the rest of the team so we can cover basic Cybersecurity testing Essential Industry and Competencies Previous experience More ❯

Security Tester – Contract (SC Cleared | Hybrid Leeds | Inside IR35) Up to £375 per day (Inside IR35) Hybrid – two days per week on site in West Yorkshire Initial contract until August 2026 Active SC clearance required Overview We are seeking an experienced Security Tester to join an established testing team working on large scale, secure systems within … the public sector. The role focuses on manual security testing, vulnerability management, and cyber resilience, supporting ongoing work around identity and access management and data protection. This is a hands on position where you will identify risks, validate security controls, and help deliver robust and resilient solutions. You will work closely with technical teams and contribute to improving … the organisation's overall security posture. Key Responsibilities Identify and report security gaps across systems, applications and processes Develop and execute comprehensive cyber security test strategies Perform manual testing of systems, APIs and applications Conduct vulnerability scanning, prioritisation and remediation validation Validate multi factor authentication and related mechanisms including OAuth, SAML and JWT Support disaster recovery and More ❯

Up to £375 per day (Inside IR35) Hybrid - two days per week on site in West Yorkshire Initial contract until August 2026 Security Tester - Contract (SC Cleared | Hybrid Leeds | Inside IR35) Up to £375 per day (Inside IR35) Hybrid - two days per week on site in West Yorkshire Initial contract until August 2026 Active SC clearance required Overview … We are seeking an experienced Security Tester to join an established testing team working on large scale, secure systems within the public sector. The role focuses on manual security testing, vulnerability management, and cyber resilience, supporting ongoing work around identity and access management and data protection. This is a hands on position where you will identify risks … validate security controls, and help deliver robust and resilient solutions. You will work closely with technical teams and contribute to improving the organisation's overall security posture. Key Responsibilities Identify and report security gaps across systems, applications and processes Develop and execute comprehensive cyber security test strategies Perform manual testing of systems, APIs and applications Conduct More ❯

Must have active SC Clearance This is a fantastic opportunity to work for the NHS as a Security Tester, inside IR35. This role will require on site working in Leeds, every Tuesday and Thursday and active SC Clearance is essential. The key skills required for this Security Tester role are: Create cyber security test strategy … Azure storage Python Javacript Manual API testing If you do have the relevant experience for this Security Tester role, please do apply. More ❯

Job Title: CREST Accredited Security Tester 6 Month Contract Hybrid (Central London based) £670 Per Day Inside IR35 Overview: Seeking a CREST-accredited Security Tester with strong penetration testing and vulnerability management expertise. Skilled in Tenable Nessus and experienced in managing third-party testing engagements , you'll deliver high-impact security assurance across complex environments. … Key Responsibilities: Conduct internal penetration testing and security assessments across cloud and on-premise systems. Scope, execute, and report on tests using CREST standards and Nessus . Produce clear, high-quality scopes, proposals, and technical reports . Provide SME guidance on threats, risks, and testing methodologies. Manage and coordinate third-party CHECK/CREST testers . Lead vulnerability management … frameworks, playbooks, and secure-by-design practices . Research and assess emerging threats to enhance testing capability. Skills & Experience: CREST certification (CRT or equivalent). Proven penetration testing and security assurance expertise. Strong hands-on experience with Tenable Nessus . Track record of managing third-party pen testing engagements . Excellent communication and technical reporting skills. Eames Consulting is More ❯

Security Tester - Contract (SC Cleared Hybrid Leeds Inside IR35) Up to £375 per day (Inside IR35) Hybrid - two days per week on site in West Yorkshire Initial contract until August 2026 Active SC clearance required Overview We are seeking an experienced Security Tester to join an established testing team working on large scale, secure systems within More ❯

Dark Wolf Solutions is actively seeking an experienced Product and Hardware Security Penetration Tester to join our innovative team. This individual will play a critical role in assessing and enhancing the security of various products, including hardware, software, and embedded systems. This role demands a deep understanding of penetration testing methodologies and advanced exploit development, focusing on … identifying and mitigating vulnerabilities across a wide range of technologies. As a Senior Product and Hardware Security Penetration Tester, you will have the chance to work on cutting-edge technologies and contribute to the enhancement of security across a wide range of products. If you possess a strong background in penetration testing and a passion for cybersecurity … the system. Developing and executing exploits and proof-of-concept (PoC) attacks to demonstrate the impact of identified vulnerabilities. Analyzing and reverse engineering firmware and embedded systems to identify security weaknesses. Testing and assessing the security of secure boot processes and Trusted Execution Environments (TEE). Conducting web application security assessments, focusing on OWASP Top Ten vulnerabilities More ❯

Are you ready to lead projects that protect and secure digital assets? Ardent Principles is searching for a full-time Cyber Security Penetration Tester to enhance our security initiatives onsite, full-time in Northern Virginia. If you're passionate about cyber security, thrive on managing impactful projects, and are ready to make a difference, this is … your satisfaction leads to the success of our clients. Key Responsibilities REQUIRED: Active TS/SCI with Full Scope Polygraph In this challenging yet rewarding role as a Penetration Tester, you are an integral part of what brings our Company's mission to life. You should have the following required skills, certifications and demonstrated experience in and/or … with: Cyber security or related IT field Cyber penetration testing Applying computer attack methods and system exploitation techniques Working knowledge of cyber security principles for Linux, Windows, and virtual platforms Designing, testing, or implementing IT security architecture Performing network security analysis Analyzing network architectures Using network management tools Developing risk management methodologies Analyzing test results to More ❯

Cyber Security Consultant (Penetration Tester) Milton Keynes, Buckinghamshire, United Kingdom We are seeking an experienced Cyber Security Consultant (Penetration Tester) . Make an Impact at RSM UK At RSM, our consulting team brings together diverse advisory experts to deliver our six core solutions: business transformation, forensic, deal services, restructuring, finance function support, and risk and governance. … our six solutions, expanding our team of expert consultants, embracing a digital-first approach, strengthening our global presence, and building strong client relationships. We are seeking an enthusiastic Cyber Security Consultant to join our team. Working alongside our experienced team of specialists, you'll deliver offensive security services including digital footprint reconnaissance, social engineering, penetration testing, vulnerability assessments … and more to high-profile clients across all industries. The purpose of this role is to deliver offensive security services such as digital footprint reconnaissance, social engineering, vulnerability assessments, penetration testing, threat modeling, cyber-attack simulation exercises, and more. You'll benefit from ongoing coaching, career mentoring, and support through our career pathway. You will have opportunities to develop More ❯

Cyber Security Engineer (Penetration Tester) Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: Secret Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local The Opportunity: Are you a cybersecurity professional with a passion for hands-on technical challenges? CACI seeks a motivated Cyber Security Engineer to support … the C5ISR Center at Aberdeen Proving Ground, MD. You will join a team of cyber security engineers to perform vulnerability assessments for the Cyber Security (CS) Division at the Engineering and Services Innovation (ESI) Directorate. Responsibilities: As a key member of a focused team of cyber engineers, you'll be responsible for: Conducting comprehensive security assessments to … vulnerabilities and exploits. Intermediate knowledge of Linux and Windows internals. Thorough technical understanding of networking protocols, hardware, and software. Ability to interpret network traffic to understand communications and identify security vulnerabilities using Wireshark, Burp Suite, etc. Familiarity with hypervisor virtualization (VMware, VirtualBox, ESXi). Ability to effectively communicate through written and verbal means, to include conveying technical information to More ❯

Für den Standort München suchen wir: SENIOR CYBER SECURITY PENETRATION TESTER (D/F/M) Your tasks: Execution of penetration tests on web applications, networks, cloud environments, and mobile applications, as well as participation in red team exercises Identification, exploitation, and documentation of vulnerabilities in compliance with ethical testing standards Development and implementation of security testing … of detailed reports and recommendations for improving attack surfaces, as well as presenting results internally and externally Participation in proposal preparation Collaboration with architects, engineers, and integrators across various security and cyber disciplines Monitoring technological developments in the field of offensive security and integrating them into new solutions Preparation of required documentation and presentation of work results Your … qualifications: The position requires knowledge and skills typically acquired through a relevant, completed degree in IT security, computer science, technical computer science, or a comparable field with a standard period of study of up to four years, along with related advanced subject-specific qualifications. Alternatively, equivalent qualifications may be obtained through a completed vocational training program with particularly extensive More ❯