51 to 75 of 230 Permanent Penetration Tester Jobs

Lead Cyber Security Consultant - Penetration Tester (UK) - Dionach by Nomios 1 day ago Be among the first 25 applicants Direct message the job poster from Dionach This role offers flexibility to work remotely, with occasional visits to client sites. Alternatively, you can choose a hybrid arrangement and work from our offices in Oxford or Glasgow, if preferred. Why … join Dionach by Nomios? Since being acquired by Nomios in late 2024, Dionach by Nomios has continued its dynamic growth as a leading information security company. Specializing in penetration testing and information assurance services, we offer an incredible opportunity to be part of an experienced team, build your skills, and grow professionally. Dionach by Nomios holds impressive certifications, including … environment for all our employees. If you require accommodations during the application process, let us know, and we'll work to meet your needs. What You'll Do Lead penetration testing teams to conduct penetration tests across various environments, including web applications, APIs, Cloud, and network infrastructure. Lead on-site customer engagements. Lead on developing and providing training More ❯

As a Senior 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 requires an understanding of TVM concepts, technologies … will possess strong communication skills and will be committed to ensuring the highest level of security, compliance, and user experience. What you'll be doing as a Senior Security Penetration Tester Help support and develop an internal penetration testing function. Conduct network, application penetration testing, code and security reviews. Identify and exploit vulnerabilities through proof-of … implemented and maintained. Responsible for supporting the creation of the operating model for vulnerability management, that it is shared, agreed and operates effectively across the business. Develop and maintain penetration testing documentation, policies, and procedures. Integrate cybersecurity solutions (e.g. vulnerability scanning tools) with existing systems, applications, and infrastructure. Evaluate and recommend technologies, tools, and vendors to meet business needs. More ❯

Role Overview: We are seeking a driven and technically proficient Penetration Tester. The ideal candidate will have solid experience in performing end-to-end Vulnerability Assessments and Penetration Testing (VAPT) across various environments, possess strong reporting and scripting skills, and demonstrate the ability to engage with clients during both pre-sales and project delivery phases. This is an … excellent opportunity for someone looking to grow their career within a CREST-accredited organization that delivers high-impact services to critical industries. Responsibilities: Penetration Testing & Security Assessments Plan, execute, and document penetration tests on web applications, mobile apps, APIs, infrastructure, cloud environments, and internal/external networks. (Black, Grey, White pentest) Perform source code reviews to uncover insecure … including technical scoping, requirement gathering, and proposal development. Participate in client-facing meetings to explain findings, provide mitigation advice, and manage expectations when needed. Requirements: Minimum 4 years of penetration testing experience CREST CRT and CPSA certified (preferred) Other Security certifications: OSCP, OSWP, HTB, CBBH, CISSP (Bonus) Red Team experience (Bonus) Strong knowledge of OWASP Top 10, MITRE ATT More ❯

Senior Penetration Tester – (UK only - Must be eligible for Security Clearance) Location: UK (Leeds, Bristol, London or Remote) Salary - £45k - £60k Step up your game in cybersecurity. We’re looking for an experienced Senior Penetration Tester who thrives on pushing boundaries, thinks like an attacker, and delivers like a pro. You’ll be joining a tight … knit team of passionate ethical hackers tackling high-impact, real-world cyber threats across both government and commercial landscapes. What You’ll Be Doing: Lead and deliver hands-on penetration tests Mentor junior testers and review technical outputs Collaborate with clients and provide expert guidance Feed into proposals and help shape strategic direction Continuously grow your technical and consulting … skills What You’ll Need: ✔ NCSC CHECK Team Member status ✔ Solid UK penetration testing experience (ideally across varied environments) ✔ Technical depth in networks, systems, and application testing ✔ Strong communication and reporting skills ✔ A hacker mindset and the drive to stay ahead of evolving threats ✔ Clear and demonstrable understanding of penetration testing and red-teaming including NCSC and CREST More ❯

Senior Penetration Tester – (UK only - Must be eligible for Security Clearance) Location: UK (Leeds, Bristol, London or Remote) Salary - £45k - £60k Step up your game in cybersecurity. We’re looking for an experienced Senior Penetration Tester who thrives on pushing boundaries, thinks like an attacker, and delivers like a pro. You’ll be joining a tight … knit team of passionate ethical hackers tackling high-impact, real-world cyber threats across both government and commercial landscapes. What You’ll Be Doing: Lead and deliver hands-on penetration tests Mentor junior testers and review technical outputs Collaborate with clients and provide expert guidance Feed into proposals and help shape strategic direction Continuously grow your technical and consulting … skills What You’ll Need: ✔ NCSC CHECK Team Member status ✔ Solid UK penetration testing experience (ideally across varied environments) ✔ Technical depth in networks, systems, and application testing ✔ Strong communication and reporting skills ✔ A hacker mindset and the drive to stay ahead of evolving threats ✔ Clear and demonstrable understanding of penetration testing and red-teaming including NCSC and CREST More ❯

Penetration Tester – UK Remote – £60,000 - £80,000 + Benefits Our client, a leading UK Cyber Security Consultancy, is looking for an experienced Mobile Application Penetration Tester to join their Offensive Security function. Our client offers a range of penetration testing services, including red teaming engagements, providing opportunities to work on diverse client projects and … lead engagements from the forefront. Key Responsibilities: Conduct mobile application penetration testing across Android and iOS platforms, assessing security vulnerabilities. Engage in red teaming exercises to simulate real-world attack scenarios against enterprise applications. Evaluate API security, network communications, cryptographic implementations, and mobile backend security. Perform manual and automated exploitation, including tampering, code injection, authentication bypass, and malware analysis. … Utilize industry-leading tools such as Burp Suite, MobSF, Frida, Objection, IDA Pro, and other mobile security frameworks. To Be Considered for This Role: Proven experience in penetration testing mobile applications, focusing on Android and iOS security. Expertise in reverse engineering, dynamic analysis, API security testing, and mobile exploit development. Familiarity with OWASP Mobile Top 10 and secure coding More ❯

Penetration Tester – UK remote - £60,000 - £80,000 + Benefits + Bonus Our client is looking for an experienced Penetration Tester to join their established Offensive Security function. This role involves conducting and delivering high-quality security assessments across web applications, infrastructure, mobile, cloud, and networks. Our client is looking for someone who has a wide … understanding of different types of security testing, and in-depth threat-intelligence knowledge. Main Responsibilities: Perform penetration tests on web applications, networks, APIs, cloud environments, and mobile platforms. Assist in red team exercises, social engineering assessments, and security awareness initiatives. Conduct vulnerability assessments, exploit security flaws, and document findings with actionable remediation steps. Simulate real-world attack scenarios to … develop custom scripts, tools, and exploits to test system defences. Work closely with security teams to remediate identified vulnerabilities. To be considered, you should have: 4+ years in a penetration testing position. Strong knowledge of OWASP Top 10, MITRE ATT&CK Framework, and common exploit techniques. Experience using tools such as Burp Suite, Metasploit, Kali Linux, Nmap, and Wireshark. More ❯

Role: Penetration Tester (Infrastructure Focus) 🛡️ Work Type & Location: Hybrid – London preferred (other UK cities possible) 🏙️ Role Type: Permanent 💼 Salary: £70,000–£105,000 (London) depending on experience 💰 Other regional packages available for Cambridge, Manchester, Bristol, or Edinburgh Our client – a global innovation consultancy – is expanding its Digital & Data capability and is on the lookout for an experienced Penetration Tester (Infrastructure Focus) to join a high-trust, hands-on team. This role is all about deep technical work inside live infrastructure environments – think Active Directory, internal networks, and sensitive systems where precision matters. If you’re the kind of tester who thrives in complex, undocumented environments and enjoys real-world impact over checkbox testing, this is … the challenge for you. 🔍 As a Penetration Tester (Infrastructure Focus), you will: Deliver internal infrastructure tests in high-risk, high-impact environments Focus on Active Directory, lateral movement, and privilege escalation techniques Communicate directly with clients to present findings and advise on remediation Produce clear, actionable reports for both technical and non-technical stakeholders Contribute to improving internal More ❯

Role: Penetration Tester (Infrastructure Focus) ️ Work Type & Location: Hybrid – London preferred (other UK cities possible) ️ Role Type: Permanent Salary: £70,000–£105,000 (London) depending on experience Other regional packages available for Cambridge, Manchester, Bristol, or Edinburgh Our client – a global innovation consultancy – is expanding its Digital & Data capability and is on the lookout for an experienced Penetration Tester (Infrastructure Focus) to join a high-trust, hands-on team. This role is all about deep technical work inside live infrastructure environments – think Active Directory, internal networks, and sensitive systems where precision matters. If you’re the kind of tester who thrives in complex, undocumented environments and enjoys real-world impact over checkbox testing, this is … the challenge for you. As a Penetration Tester (Infrastructure Focus), you will: Deliver internal infrastructure tests in high-risk, high-impact environments Focus on Active Directory, lateral movement, and privilege escalation techniques Communicate directly with clients to present findings and advise on remediation Produce clear, actionable reports for both technical and non-technical stakeholders Contribute to improving internal More ❯

Penetration Tester £up to £100,000 GBP Bonus Hybrid WORKING Location: United Kingdom (Greater London) Type: Permanent Role: Penetration Tester (Infrastructure Focus) Work Type & Location: Hybrid - London preferred (other UK locations considered) Role Type: Permanent Start Date: Immediate Anson McCade is proud to be supporting a global innovation and transformation consultancy in growing their elite Digital … Data team. We're seeking a Penetration Tester with a deep focus on infrastructure and Active Directory environments. This isn't your typical web app testing role-this is hands-on, internal infrastructure testing in high-stakes client environments (defence, critical infrastructure, national security). This is a high-trust, high-impact role for someone confident in navigating … sensitive networks, with the ability to think independently, consult directly with clients, and deliver clear, actionable insights. As a Penetration Tester, you will: • Deliver internal infrastructure penetration tests, including Active Directory environments • Act as a trusted advisor to clients-this is a hands-on consulting-facing role • Document clear, concise technical reports for both technical and non More ❯

Penetration Tester Position Description CGI Cyber Security Team in the UK is one of the largest Cyber consultancies in the UK with around 300 members. The UK Cyber team works across a variety of domains including: Government, Defence, Critical Infrastructure, Healthcare, Utilities, Banking and Financial Services and Many more. At CGI you will get the opportunity to work … range of areas including Risk Assessments, Vulnerability Management, Accreditations (ISO27001, GDPR), GRC (Governance, Risk, Compliance), Security Architecture Design and Build (technical and Non-technical), Incident Response, Protective Monitoring Services, Penetration Testing and much more. We take clients through a journey to improve their overall security posture and maturity to ensure they feel reassured in the Security control, measures and … go. Our roles are only available if you hold or fulfil the criteria to obtain a UK Security Clearance. Your future duties and responsibilities An opportunity for an experienced penetration testers has become available due to growth, joining the CGI Cyber Security business unit, one of the largest groups of cyber security specialists in the UK. CGI has a More ❯

has grown to employ elite technical experts who have contributed to some of the world's largest technology and digital security projects. The NCSC-approved CHECK company specializes in penetration testing and security assessment services under the government-accredited CHECK scheme. They are currently seeking for a skilled Penetration Tester to join the growing team. This role … standard and in-house developed tools for security testing. Conduct manual reviews to identify issues within customer infrastructure and web applications. Perform various types of security testing, including network penetration, web application, mobile security assessments, and social engineering. Participate in red team engagements, employing creative strategies to outsmart defenders. Explore various approaches to gain unauthorized access to customer networks … solving capabilities. Possesses a solid understanding and fascination with fundamental concepts in operating systems and networking. Displays a keen interest in security principles and protocols. Demonstrates proven experience in penetration testing and/or security surveillance. Exhibits eagerness to absorb new knowledge and technologies. Programming Exposure A relevant Cyber Security certification is advantageous, e.g. (OSCP, CRT, CTM, CTL) Showcases More ❯

Penetration Tester Location: Fort Belvoir Work Type: Onsite Remote Work: No Job Description Are you looking for an opportunity to use your technical expertise and grow your skills to provide technical solutions in support of our warfighters? We're looking for a Red Team Penetration Tester to help test, configure, and maintain military critical operating systems. … As a Red Team Penetration Tester on our project, you'll work with other technical experts to help our customer overcome tough challenges and help improve the readiness of military units to perform their roles. Your communication skills will come in handy as you share your experience and work as a vital member of a team to solve … Information Technology, or Bachelor's degree and 3+ years of experience in Information Technology Linux Computing Environment (CE) Certification Windows CE Certification Offensive Security Certified Professional (OSCP) or GIAC Penetration Tester (GPEN) Certification DoD Approved 8570 Information Assurance Technician (IAT) Level III Certification, including CASP+ CE, CCNP Security, CISA, CISSP, GCED, GCIH, or CCSP Certification Additional Qualifications Experience More ❯

Senior Penetration Tester Are you a passionate and highly skilled security expert, eager to lead complex penetration testing engagements and drive strategic client security? Join Trustmarque's dynamic penetration testing team and become a pivotal forcesafeguarding our clients' digital ecosystems. In this senior role, you'll leverage your advanced expertise to conduct comprehensive penetration tests … mentor the next generation of security talent. What you’ll be doing: Sharpen Your Skills, Sharpen Our Security: Stay at the forefront of the industry by continuously honing your penetration testing expertise and certifications. Penetration Testing Powerhouse: Deliver a comprehensive range of penetration testing services, exceeding business needs and exceeding expectations. Client Champion: Collaborate closely with clients … think creatively and offer solutions to complex problems. Ability to translate specialist, technical information for all audiences. Here's what we're looking for: Proven track record of delivering penetration testing services. Current senior penetration testing qualification, such as Crest Certified Tester or Cyber Scheme Team Leader 3+ years of penetration testing experience Ability to maintain More ❯

Job Description We have an incredible opportunity to join us here at Phoenix Group as a Senior Penetration Tester to join our Threat Led Pen-Testing Team within our Information Security Department. Job Type: Permanent Location: This role could be based in either our Telford or Edinburgh Office, with hybrid working, Flexible working: All of our roles are … that is tackling key issues such as transitioning our portfolio to net zero by 2050, and we’re not done yet. The role We are looking for a Senior Penetration Tester within our Threat led Pen-Testing team. In this role you will be conducting regular penetration tests ranging from web applications to infrastructure testing and purple … teaming. You Will Also As a senior, lead penetration tests from scoping, through to delivery, reporting and debriefing. Contribute to Quality Assurance of internally issued pen test reports. Collaborate with the Defensive (Blue) team when conducting Purple Team exercises Maintain knowledge of Cyber Security Threat Landscape, Attacks & Adversary TTPs What are we looking for? Essential At least 2 years More ❯

Consultant – Cyber Security (Penetration Tester) RSM UK Greater London, England, United Kingdom Join or sign in to find your next job Join to apply for the Consultant – Cyber Security (Penetration Tester) role at RSM UK Consultant – Cyber Security (Penetration Tester) RSM UK Greater London, England, United Kingdom 2 weeks ago Be among the first … applicants Join to apply for the Consultant – Cyber Security (Penetration Tester) role at RSM UK Get AI-powered advice on this job and more exclusive features. Direct message the job poster from RSM UK Talent Acquisition Senior Specialist - Consulting As one of the world's largest networks of audit, tax and consulting firms, RSM delivers big ideas and … an enthusiastic Cyber Security Consultant to join our team. Working alongside our experienced team of specialists, you’ll be delivering offensive security services including digital footprint reconnaissance, social engineering, penetration testing and vulnerability assessments and more to high profile clients across all industries. The purpose of this role is to deliver our offensive security services including digital footprint reconnaissance More ❯

Penetration Tester Job Category: Engineering Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel Required: None Type of Travel: None The Opportunity: Perform computer network evaluations to include penetration security assessments in a cybersecurity red team environment. Be part of a department with an expanding range … Python, Perl or Ruby, Systems Programming is a plus. Existing Subject Matter Expert of Advanced Persistent Threats and Emerging Threats. Proactive interest in emerging technologies and techniques related to penetration testing. Demonstrated real world experience performing grey and black box penetration testing. Have an understanding of and interest in common web application vulnerabilities like XSS, CSRF, Command Injection … Solid understanding of networking, TCP/IP, virtualization and cloud/data center architecture. Strong familiarity with some of the following: OWASP top 10, DoD and NSA Vulnerability and Penetration Testing Standards. Knowledge of exploitation concepts including phishing and social engineering tactics, buffer overflows, fuzzing, SQLi, MiTM, covert channels, secure tunneling and open source exfiltration techniques. Bachelors degree in More ❯

we also mention that we’ve been awarded Gold Investors in People for a fourth consecutive time? About The Role A technical security expert with the ability to conduct penetration tests and the appetite to deliver a wide spectrum of interesting security-related work, seeking a new challenge to join our growing Cyber team to help shape the company … s security and compliance services nationwide for a leading IT and business consultancy, supporting national and international clients. Day To Day Responsibilities Leading and delivering web application penetration testing, with an expectation to participate in infrastructure penetration testing, vulnerability assessments, and security audits across various business functions as needed Lead technical scoping activities and understand a client’s … to manage multiple client engagements concurrently Act as a trusted partner to all of our clients Essential Some of the skills we are looking for Proven experience in performing penetration tests across a broad range of systems, more specifically web applications and APIs Wider technical knowledge of network and cloud infrastructure security Understanding of security vulnerabilities and risk mitigation More ❯

We're looking for a Security Assessment Specialist to join our growing Cyber Security team, reporting into the Security Assessment Manager. In this role, you'll 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 Services Delivering practical, impactful remediation advice to Control Owners based on identified vulnerabilities Supporting Business and Application Owners in assessing and improving the effectiveness of their security controls Providing technical consulting and assurance … less experienced team members, fostering knowledge sharing and growth Who are we looking for? The ideal candidate will have the following skills and experience: Proven expertise across the full penetration testing lifecycle, from scoping and execution to reporting and stakeholder debriefs Deep understanding of vulnerability assessment practices, including effective remediation strategies for both infrastructure and application-level security Strong More ❯

Penetration Tester – Infrastructure Salary: £70,000–£100,000 (depending on experience) Location: Hybrid – London (2 days per week on-site) Note: To be eligible for this role, you must be eligible for UK Security Clearance (SC). A high-performing digital security team is looking for an experienced Infrastructure Penetration Tester to join them in delivering … is suited to testers who thrive in technically demanding scenarios, want autonomy, and are motivated by work with real-world impact. Key Responsibilities Conduct internal infrastructure and Active Directory penetration tests in live production environments Produce clear, concise reports tailored to both technical and non-technical audiences Build trusted relationships with clients in a consultancy-facing capacity Work within … the evolution of internal tooling and testing methodologies Operate effectively in environments with limited documentation or predefined processes Essential Experience and Skills At least 4 years’ experience in infrastructure penetration testing Strong knowledge of Active Directory exploitation techniques (privilege escalation, lateral movement, etc.) Confident working in high-stakes, sensitive environments Strong command-line skills across Windows and Linux systems More ❯

Penetration Tester – Infrastructure Salary: £70,000–£100,000 (depending on experience) Location: Hybrid – London (2 days per week on-site) Note: To be eligible for this role, you must be eligible for UK Security Clearance (SC). A high-performing digital security team is looking for an experienced Infrastructure Penetration Tester to join them in delivering … is suited to testers who thrive in technically demanding scenarios, want autonomy, and are motivated by work with real-world impact. Key Responsibilities Conduct internal infrastructure and Active Directory penetration tests in live production environments Produce clear, concise reports tailored to both technical and non-technical audiences Build trusted relationships with clients in a consultancy-facing capacity Work within … the evolution of internal tooling and testing methodologies Operate effectively in environments with limited documentation or predefined processes Essential Experience and Skills At least 4 years’ experience in infrastructure penetration testing Strong knowledge of Active Directory exploitation techniques (privilege escalation, lateral movement, etc.) Confident working in high-stakes, sensitive environments Strong command-line skills across Windows and Linux systems More ❯

Penetration Tester – Infrastructure Salary: £70,000–£100,000 (depending on experience) Location: Hybrid – London (2 days per week on-site) Note: To be eligible for this role, you must be eligible for UK Security Clearance (SC). A high-performing digital security team is looking for an experienced Infrastructure Penetration Tester to join them in delivering … is suited to testers who thrive in technically demanding scenarios, want autonomy, and are motivated by work with real-world impact. Key Responsibilities Conduct internal infrastructure and Active Directory penetration tests in live production environments Produce clear, concise reports tailored to both technical and non-technical audiences Build trusted relationships with clients in a consultancy-facing capacity Work within … the evolution of internal tooling and testing methodologies Operate effectively in environments with limited documentation or predefined processes Essential Experience and Skills At least 4 years’ experience in infrastructure penetration testing Strong knowledge of Active Directory exploitation techniques (privilege escalation, lateral movement, etc.) Confident working in high-stakes, sensitive environments Strong command-line skills across Windows and Linux systems More ❯

recruiter to learn more. Base pay range Direct message the job poster from Opus Recruitment Solutions Senior Consultant - Cyber Security - Opus Recruitment Solutions Opus are looking for an experienced Penetration Tester to join our client, a cyber consultancy specialising exclusively in penetration testing and red teaming, delivering high-impact, adversary-simulated engagements for clients ranging from agile … tech scale-ups to critical infrastructure providers. As a Senior Penetration Tester, you’ll play a central role in executing and shaping these engagements—across infrastructure, web, cloud, and bespoke environments—while also leading goal-based assessments and full-scale red team operations. This is a hands-on, client-facing position suited to someone who thrives in technically … demanding scenarios and wants to work alongside a small, elite team of offensive security specialists. Key Responsibilities Lead and execute complex penetration tests and adversary simulations Deliver red team engagements aligned with frameworks like TIBER, CBEST, and MITRE ATT&CK Develop custom tooling and exploits where required Create detailed, client-facing technical and executive reports Mentor junior testers and More ❯

Cyber Security At Eames Consulting Location: Fully Remote Contract: Initial 2-month contract, with potential for extension Job Overview: We are looking for a highly skilled and experienced IT Penetration Tester to join our team on an initial 2-month contract basis. As a Pen Tester, you will be responsible for performing security assessments across a wide … helping to improve our client’s security posture. The role is fully remote and offers a competitive rate of £450 per day outside of IR35. Key Responsibilities: Conduct comprehensive penetration testing on a wide variety of systems, applications, and networks (both internal and external IP addresses). Perform manual and automated testing, identifying security flaws, vulnerabilities, and weaknesses. Provide … in-depth analysis of findings and offer recommendations to mitigate risks. Write clear, concise, and professional penetration testing reports that are understandable to both technical and non-technical stakeholders. Work with internal teams and clients to communicate vulnerabilities, testing results, and remediation plans. Ensure compliance with industry best practices and frameworks for penetration testing. Maintain up-to-date More ❯

Mission-critical work The Opportunity Join a high-impact consultancy at the forefront of innovation and digital transformation. You’ll be part of a specialist team delivering critical infrastructure penetration tests across some of the most sensitive environments in the UK — from defence and national security to critical infrastructure and operational technology. This is not a web application role … . We’re looking for an infrastructure-focused penetration tester with the technical confidence and consultancy mindset to work independently, lead engagements, and deliver real-world impact. If you want to push beyond checklists and automated scans and into deep, hands-on testing — this is the place to do it. What You’ll Be Doing Deliver end-to … methodologies, and continuous improvement of team capability Engage with a technical and non-technical audience, acting as a trusted security advisor What You Bring Core Skills: 4+ years of penetration testing experience (infrastructure/internal focus) Strong hands-on expertise with Active Directory attacks, lateral movement, and privilege escalation Experience navigating live and legacy production systems Comfortable in Windows More ❯